Merge branch 'main' into label-replace-docs

.golangci.yml

@@ -22,5 +22,6 @@ linters-settings:
     packages-with-error-message:
       - sync/atomic: "Use go.uber.org/atomic instead of sync/atomic"
       - github.com/stretchr/testify/assert: "Use github.com/stretchr/testify/require instead of github.com/stretchr/testify/assert"
+      - github.com/go-kit/kit/log: "Use github.com/go-kit/log instead of github.com/go-kit/kit/log"
   errcheck:
     exclude: scripts/errcheck_excludes.txt

CONTRIBUTING.md

@@ -52,7 +52,7 @@ All our issues are regularly tagged so that you can also filter down the issues
 
 * Commits should be as small as possible, while ensuring that each commit is correct independently (i.e., each commit should compile and pass tests).
 
-* If your patch is not getting reviewed or you need a specific person to review it, you can @-reply a reviewer asking for a review in the pull request or a comment, or you can ask for a review on IRC channel [#prometheus](https://webchat.freenode.net/?channels=#prometheus) on irc.freenode.net (for the easiest start, [join via Riot](https://riot.im/app/#/room/#prometheus:matrix.org)).
+* If your patch is not getting reviewed or you need a specific person to review it, you can @-reply a reviewer asking for a review in the pull request or a comment, or you can ask for a review on IRC channel [#prometheus](https://web.libera.chat/?channels=#prometheus) on irc.libera.chat (for the easiest start, [join via Riot](https://riot.im/app/#/room/#prometheus:matrix.org)).
 
 * Add tests relevant to the fixed bug or new feature.
 

cmd/prometheus/main.go

@@ -35,8 +35,8 @@ import (
 	"time"
 
 	"github.com/alecthomas/units"
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 	conntrack "github.com/mwitkow/go-conntrack"
 	"github.com/oklog/run"
 	"github.com/opentracing/opentracing-go"
@@ -434,7 +434,7 @@ func main() {
 	level.Info(logger).Log("vm_limits", prom_runtime.VMLimits())
 
 	var (
-		localStorage  = &readyStorage{}
+		localStorage  = &readyStorage{stats: tsdb.NewDBStats()}
 		scraper       = &readyScrapeManager{}
 		remoteStorage = remote.NewStorage(log.With(logger, "component", "remote"), prometheus.DefaultRegisterer, localStorage.StartTime, cfg.localStoragePath, time.Duration(cfg.RemoteFlushDeadline), scraper)
 		fanoutStorage = storage.NewFanout(logger, localStorage, remoteStorage)
@@ -527,6 +527,9 @@ func main() {
 		conntrack.DialWithTracing(),
 	)
 
+	// This is passed to ruleManager.Update().
+	var externalURL = cfg.web.ExternalURL.String()
+
 	reloaders := []reloader{
 		{
 			name:     "remote_storage",
@@ -592,6 +595,7 @@ func main() {
 					time.Duration(cfg.GlobalConfig.EvaluationInterval),
 					files,
 					cfg.GlobalConfig.ExternalLabels,
+					externalURL,
 				)
 			},
 		},
@@ -811,11 +815,13 @@ func main() {
 						return errors.New("flag 'storage.tsdb.max-block-chunk-segment-size' must be set over 1MB")
 					}
 				}
+
 				db, err := openDBWithMetrics(
 					cfg.localStoragePath,
 					logger,
 					prometheus.DefaultRegisterer,
 					&opts,
+					localStorage.getStats(),
 				)
 				if err != nil {
 					return errors.Wrapf(err, "opening storage failed")
@@ -897,12 +903,13 @@ func main() {
 	level.Info(logger).Log("msg", "See you next time!")
 }
 
-func openDBWithMetrics(dir string, logger log.Logger, reg prometheus.Registerer, opts *tsdb.Options) (*tsdb.DB, error) {
+func openDBWithMetrics(dir string, logger log.Logger, reg prometheus.Registerer, opts *tsdb.Options, stats *tsdb.DBStats) (*tsdb.DB, error) {
 	db, err := tsdb.Open(
 		dir,
 		log.With(logger, "component", "tsdb"),
 		reg,
 		opts,
+		stats,
 	)
 	if err != nil {
 		return nil, err
@@ -1072,6 +1079,7 @@ type readyStorage struct {
 	mtx             sync.RWMutex
 	db              *tsdb.DB
 	startTimeMargin int64
+	stats           *tsdb.DBStats
 }
 
 // Set the storage.
@@ -1083,7 +1091,6 @@ func (s *readyStorage) Set(db *tsdb.DB, startTimeMargin int64) {
 	s.startTimeMargin = startTimeMargin
 }
 
-// get is internal, you should use readyStorage as the front implementation layer.
 func (s *readyStorage) get() *tsdb.DB {
 	s.mtx.RLock()
 	x := s.db
@@ -1091,6 +1098,13 @@ func (s *readyStorage) get() *tsdb.DB {
 	return x
 }
 
+func (s *readyStorage) getStats() *tsdb.DBStats {
+	s.mtx.RLock()
+	x := s.stats
+	s.mtx.RUnlock()
+	return x
+}
+
 // StartTime implements the Storage interface.
 func (s *readyStorage) StartTime() (int64, error) {
 	if x := s.get(); x != nil {
@@ -1193,6 +1207,14 @@ func (s *readyStorage) Stats(statsByLabelName string) (*tsdb.Stats, error) {
 	return nil, tsdb.ErrNotReady
 }
 
+// WALReplayStatus implements the api_v1.TSDBStats interface.
+func (s *readyStorage) WALReplayStatus() (tsdb.WALReplayStatus, error) {
+	if x := s.getStats(); x != nil {
+		return x.Head.WALReplayStatus.GetWALReplayStatus(), nil
+	}
+	return tsdb.WALReplayStatus{}, tsdb.ErrNotReady
+}
+
 // ErrNotReady is returned if the underlying scrape manager is not ready yet.
 var ErrNotReady = errors.New("Scrape manager not ready")
 

cmd/prometheus/main_test.go

@@ -25,7 +25,7 @@ import (
 	"testing"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/common/model"
 	"github.com/stretchr/testify/require"
@@ -289,7 +289,7 @@ func TestTimeMetrics(t *testing.T) {
 	}()
 
 	reg := prometheus.NewRegistry()
-	db, err := openDBWithMetrics(tmpDir, log.NewNopLogger(), reg, nil)
+	db, err := openDBWithMetrics(tmpDir, log.NewNopLogger(), reg, nil, nil)
 	require.NoError(t, err)
 	defer func() {
 		require.NoError(t, db.Close())

cmd/promtool/backfill.go

@@ -18,7 +18,7 @@ import (
 	"io"
 	"math"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/pkg/errors"
 	"github.com/prometheus/prometheus/pkg/labels"
 	"github.com/prometheus/prometheus/pkg/textparse"
@@ -65,7 +65,7 @@ func getMinAndMaxTimestamps(p textparse.Parser) (int64, int64, error) {
 	return maxt, mint, nil
 }
 
-func createBlocks(input []byte, mint, maxt int64, maxSamplesInAppender int, outputDir string, humanReadable bool) (returnErr error) {
+func createBlocks(input []byte, mint, maxt int64, maxSamplesInAppender int, outputDir string, humanReadable, quiet bool) (returnErr error) {
 	blockDuration := tsdb.DefaultBlockDuration
 	mint = blockDuration * (mint / blockDuration)
 
@@ -169,6 +169,9 @@ func createBlocks(input []byte, mint, maxt int64, maxSamplesInAppender int, outp
 			block, err := w.Flush(ctx)
 			switch err {
 			case nil:
+				if quiet {
+					break
+				}
 				blocks, err := db.Blocks()
 				if err != nil {
 					return errors.Wrap(err, "get blocks")
@@ -196,11 +199,11 @@ func createBlocks(input []byte, mint, maxt int64, maxSamplesInAppender int, outp
 
 }
 
-func backfill(maxSamplesInAppender int, input []byte, outputDir string, humanReadable bool) (err error) {
+func backfill(maxSamplesInAppender int, input []byte, outputDir string, humanReadable, quiet bool) (err error) {
 	p := textparse.NewOpenMetricsParser(input)
 	maxt, mint, err := getMinAndMaxTimestamps(p)
 	if err != nil {
 		return errors.Wrap(err, "getting min and max timestamp")
 	}
-	return errors.Wrap(createBlocks(input, mint, maxt, maxSamplesInAppender, outputDir, humanReadable), "block creation")
+	return errors.Wrap(createBlocks(input, mint, maxt, maxSamplesInAppender, outputDir, humanReadable, quiet), "block creation")
 }

cmd/promtool/backfill_test.go

@@ -540,7 +540,7 @@ after_eof 1 2
 			require.NoError(t, os.RemoveAll(outputDir))
 		}()
 
-		err = backfill(test.MaxSamplesInAppender, []byte(test.ToParse), outputDir, false)
+		err = backfill(test.MaxSamplesInAppender, []byte(test.ToParse), outputDir, false, false)
 
 		if !test.IsOk {
 			require.Error(t, err, test.Description)
@@ -548,7 +548,7 @@ after_eof 1 2
 		}
 
 		require.NoError(t, err)
-		db, err := tsdb.Open(outputDir, nil, nil, tsdb.DefaultOptions())
+		db, err := tsdb.Open(outputDir, nil, nil, tsdb.DefaultOptions(), nil)
 		require.NoError(t, err)
 		defer func() {
 			require.NoError(t, db.Close())

cmd/promtool/main.go

@@ -28,7 +28,7 @@ import (
 	"strings"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/google/pprof/profile"
 	"github.com/pkg/errors"
 	"github.com/prometheus/client_golang/api"
@@ -144,6 +144,7 @@ func main() {
 
 	importCmd := tsdbCmd.Command("create-blocks-from", "[Experimental] Import samples from input and produce TSDB blocks. Please refer to the storage docs for more details.")
 	importHumanReadable := importCmd.Flag("human-readable", "Print human readable values.").Short('r').Bool()
+	importQuiet := importCmd.Flag("quiet", "Do not print created blocks.").Short('q').Bool()
 	openMetricsImportCmd := importCmd.Command("openmetrics", "Import samples from OpenMetrics input and produce TSDB blocks. Please refer to the storage docs for more details.")
 	// TODO(aSquare14): add flag to set default block duration
 	importFilePath := openMetricsImportCmd.Arg("input file", "OpenMetrics file to read samples from.").Required().String()
@@ -221,7 +222,7 @@ func main() {
 		os.Exit(checkErr(dumpSamples(*dumpPath, *dumpMinTime, *dumpMaxTime)))
 	//TODO(aSquare14): Work on adding support for custom block size.
 	case openMetricsImportCmd.FullCommand():
-		os.Exit(backfillOpenMetrics(*importFilePath, *importDBPath, *importHumanReadable))
+		os.Exit(backfillOpenMetrics(*importFilePath, *importDBPath, *importHumanReadable, *importQuiet))
 
 	case importRulesCmd.FullCommand():
 		os.Exit(checkErr(importRules(*importRulesURL, *importRulesStart, *importRulesEnd, *importRulesOutputDir, *importRulesEvalInterval, *importRulesFiles...)))

cmd/promtool/rules.go

@@ -18,8 +18,8 @@ import (
 	"fmt"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 	"github.com/pkg/errors"
 	v1 "github.com/prometheus/client_golang/api/prometheus/v1"
 	"github.com/prometheus/common/model"
@@ -68,7 +68,7 @@ func newRuleImporter(logger log.Logger, config ruleImporterConfig, apiClient que
 
 // loadGroups parses groups from a list of recording rule files.
 func (importer *ruleImporter) loadGroups(ctx context.Context, filenames []string) (errs []error) {
-	groups, errs := importer.ruleManager.LoadGroups(importer.config.evalInterval, labels.Labels{}, filenames...)
+	groups, errs := importer.ruleManager.LoadGroups(importer.config.evalInterval, labels.Labels{}, "", filenames...)
 	if errs != nil {
 		return errs
 	}

cmd/promtool/rules_test.go

@@ -22,7 +22,7 @@ import (
 	"testing"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	v1 "github.com/prometheus/client_golang/api/prometheus/v1"
 	"github.com/prometheus/common/model"
 	"github.com/prometheus/prometheus/pkg/labels"
@@ -115,7 +115,7 @@ func TestBackfillRuleIntegration(t *testing.T) {
 
 				opts := tsdb.DefaultOptions()
 				opts.AllowOverlappingBlocks = true
-				db, err := tsdb.Open(tmpDir, nil, nil, opts)
+				db, err := tsdb.Open(tmpDir, nil, nil, opts, nil)
 				require.NoError(t, err)
 
 				blocks := db.Blocks()

cmd/promtool/tsdb.go

@@ -31,7 +31,7 @@ import (
 	"time"
 
 	"github.com/alecthomas/units"
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/pkg/errors"
 
 	"github.com/prometheus/prometheus/pkg/labels"
@@ -87,7 +87,7 @@ func benchmarkWrite(outPath, samplesFile string, numMetrics, numScrapes int) err
 	st, err := tsdb.Open(dir, l, nil, &tsdb.Options{
 		RetentionDuration: int64(15 * 24 * time.Hour / time.Millisecond),
 		MinBlockDuration:  int64(2 * time.Hour / time.Millisecond),
-	})
+	}, tsdb.NewDBStats())
 	if err != nil {
 		return err
 	}
@@ -611,7 +611,7 @@ func checkErr(err error) int {
 	return 0
 }
 
-func backfillOpenMetrics(path string, outputDir string, humanReadable bool) int {
+func backfillOpenMetrics(path string, outputDir string, humanReadable, quiet bool) int {
 	inputFile, err := fileutil.OpenMmapFile(path)
 	if err != nil {
 		return checkErr(err)
@@ -622,5 +622,5 @@ func backfillOpenMetrics(path string, outputDir string, humanReadable bool) int
 		return checkErr(errors.Wrap(err, "create output dir"))
 	}
 
-	return checkErr(backfill(5000, inputFile.Bytes(), outputDir, humanReadable))
+	return checkErr(backfill(5000, inputFile.Bytes(), outputDir, humanReadable, quiet))
 }

cmd/promtool/unittest.go

@@ -25,7 +25,7 @@ import (
 	"strings"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/pkg/errors"
 	"github.com/prometheus/common/model"
 	yaml "gopkg.in/yaml.v2"
@@ -146,6 +146,7 @@ type testGroup struct {
 	AlertRuleTests  []alertTestCase  `yaml:"alert_rule_test,omitempty"`
 	PromqlExprTests []promqlTestCase `yaml:"promql_expr_test,omitempty"`
 	ExternalLabels  labels.Labels    `yaml:"external_labels,omitempty"`
+	ExternalURL     string           `yaml:"external_url,omitempty"`
 	TestGroupName   string           `yaml:"name,omitempty"`
 }
 
@@ -168,7 +169,7 @@ func (tg *testGroup) test(evalInterval time.Duration, groupOrderMap map[string]i
 		Logger:     log.NewNopLogger(),
 	}
 	m := rules.NewManager(opts)
-	groupsMap, ers := m.LoadGroups(time.Duration(tg.Interval), tg.ExternalLabels, ruleFiles...)
+	groupsMap, ers := m.LoadGroups(time.Duration(tg.Interval), tg.ExternalLabels, tg.ExternalURL, ruleFiles...)
 	if ers != nil {
 		return ers
 	}

config/config.go

@@ -23,8 +23,9 @@ import (
 	"strings"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/alecthomas/units"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log"
+	"github.com/go-kit/log/level"
 	"github.com/pkg/errors"
 	"github.com/prometheus/common/config"
 	"github.com/prometheus/common/model"
@@ -382,6 +383,9 @@ type ScrapeConfig struct {
 	MetricsPath string `yaml:"metrics_path,omitempty"`
 	// The URL scheme with which to fetch metrics from targets.
 	Scheme string `yaml:"scheme,omitempty"`
+	// An uncompressed response body larger than this many bytes will cause the
+	// scrape to fail. 0 means no limit.
+	BodySizeLimit units.Base2Bytes `yaml:"body_size_limit,omitempty"`
 	// More than this many samples post metric-relabeling will cause the scrape to
 	// fail.
 	SampleLimit uint `yaml:"sample_limit,omitempty"`

config/config_test.go

@@ -23,7 +23,8 @@ import (
 	"testing"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/alecthomas/units"
+	"github.com/go-kit/log"
 	"github.com/prometheus/common/config"
 	"github.com/prometheus/common/model"
 	"github.com/stretchr/testify/require"
@@ -38,7 +39,9 @@ import (
 	"github.com/prometheus/prometheus/discovery/eureka"
 	"github.com/prometheus/prometheus/discovery/file"
 	"github.com/prometheus/prometheus/discovery/hetzner"
+	"github.com/prometheus/prometheus/discovery/http"
 	"github.com/prometheus/prometheus/discovery/kubernetes"
+	"github.com/prometheus/prometheus/discovery/linode"
 	"github.com/prometheus/prometheus/discovery/marathon"
 	"github.com/prometheus/prometheus/discovery/moby"
 	"github.com/prometheus/prometheus/discovery/openstack"
@@ -223,6 +226,7 @@ var expectedConf = &Config{
 			HonorTimestamps: true,
 			ScrapeInterval:  model.Duration(50 * time.Second),
 			ScrapeTimeout:   model.Duration(5 * time.Second),
+			BodySizeLimit:   10 * units.MiB,
 			SampleLimit:     1000,
 
 			HTTPClientConfig: config.HTTPClientConfig{
@@ -328,11 +332,14 @@ var expectedConf = &Config{
 					Scheme:          "https",
 					RefreshInterval: consul.DefaultSDConfig.RefreshInterval,
 					AllowStale:      true,
-					TLSConfig: config.TLSConfig{
+					HTTPClientConfig: config.HTTPClientConfig{
-						CertFile:           filepath.FromSlash("testdata/valid_cert_file"),
+						TLSConfig: config.TLSConfig{
-						KeyFile:            filepath.FromSlash("testdata/valid_key_file"),
+							CertFile:           filepath.FromSlash("testdata/valid_cert_file"),
-						CAFile:             filepath.FromSlash("testdata/valid_ca_file"),
+							KeyFile:            filepath.FromSlash("testdata/valid_key_file"),
-						InsecureSkipVerify: false,
+							CAFile:             filepath.FromSlash("testdata/valid_ca_file"),
+							InsecureSkipVerify: false,
+						},
+						FollowRedirects: true,
 					},
 				},
 			},
@@ -623,6 +630,25 @@ var expectedConf = &Config{
 				},
 			},
 		},
+		{
+			JobName: "httpsd",
+
+			HonorTimestamps: true,
+			ScrapeInterval:  model.Duration(15 * time.Second),
+			ScrapeTimeout:   DefaultGlobalConfig.ScrapeTimeout,
+
+			MetricsPath:      DefaultScrapeConfig.MetricsPath,
+			Scheme:           DefaultScrapeConfig.Scheme,
+			HTTPClientConfig: config.DefaultHTTPClientConfig,
+
+			ServiceDiscoveryConfigs: discovery.Configs{
+				&http.SDConfig{
+					HTTPClientConfig: config.DefaultHTTPClientConfig,
+					URL:              "http://example.com/prometheus",
+					RefreshInterval:  model.Duration(60 * time.Second),
+				},
+			},
+		},
 		{
 			JobName: "service-triton",
 
@@ -831,6 +857,32 @@ var expectedConf = &Config{
 				},
 			},
 		},
+		{
+			JobName: "linode-instances",
+
+			HonorTimestamps: true,
+			ScrapeInterval:  model.Duration(15 * time.Second),
+			ScrapeTimeout:   DefaultGlobalConfig.ScrapeTimeout,
+
+			MetricsPath:      DefaultScrapeConfig.MetricsPath,
+			Scheme:           DefaultScrapeConfig.Scheme,
+			HTTPClientConfig: config.DefaultHTTPClientConfig,
+
+			ServiceDiscoveryConfigs: discovery.Configs{
+				&linode.SDConfig{
+					HTTPClientConfig: config.HTTPClientConfig{
+						Authorization: &config.Authorization{
+							Type:        "Bearer",
+							Credentials: "abcdef",
+						},
+						FollowRedirects: true,
+					},
+					Port:            80,
+					TagSeparator:    linode.DefaultSDConfig.TagSeparator,
+					RefreshInterval: model.Duration(60 * time.Second),
+				},
+			},
+		},
 	},
 	AlertingConfig: AlertingConfig{
 		AlertmanagerConfigs: []*AlertmanagerConfig{
@@ -915,7 +967,7 @@ func TestElideSecrets(t *testing.T) {
 	yamlConfig := string(config)
 
 	matches := secretRe.FindAllStringIndex(yamlConfig, -1)
-	require.Equal(t, 14, len(matches), "wrong number of secret matches found")
+	require.Equal(t, 15, len(matches), "wrong number of secret matches found")
 	require.NotContains(t, yamlConfig, "mysecret",
 		"yaml marshal reveals authentication credentials.")
 }
@@ -1200,6 +1252,22 @@ var expectedErrors = []struct {
 		filename: "scaleway_two_secrets.bad.yml",
 		errMsg:   "at most one of secret_key & secret_key_file must be configured",
 	},
+	{
+		filename: "scrape_body_size_limit.bad.yml",
+		errMsg:   "units: unknown unit  in 100",
+	},
+	{
+		filename: "http_url_no_scheme.bad.yml",
+		errMsg:   "URL scheme must be 'http' or 'https'",
+	},
+	{
+		filename: "http_url_no_host.bad.yml",
+		errMsg:   "host is missing in URL",
+	},
+	{
+		filename: "http_url_bad_scheme.bad.yml",
+		errMsg:   "URL scheme must be 'http' or 'https'",
+	},
 }
 
 func TestBadConfigs(t *testing.T) {

config/testdata/conf.good.yml

@@ -97,6 +97,7 @@ scrape_configs:
   scrape_interval: 50s
   scrape_timeout:  5s
 
+  body_size_limit: 10MB
   sample_limit: 1000
 
   metrics_path: /my_path
@@ -263,6 +264,10 @@ scrape_configs:
     - targets:
       - localhost:9090
 
+- job_name: httpsd
+  http_sd_configs:
+    - url: 'http://example.com/prometheus'
+
 - job_name: service-triton
   triton_sd_configs:
   - account: 'testAccount'
@@ -325,6 +330,11 @@ scrape_configs:
       access_key: SCWXXXXXXXXXXXXXXXXX
       secret_key: 11111111-1111-1111-1111-111111111111
 
+- job_name: linode-instances
+  linode_sd_configs:
+    - authorization:
+        credentials: abcdef
+
 alerting:
   alertmanagers:
   - scheme: https

config/testdata/http_url_bad_scheme.bad.yml

@@ -0,0 +1,3 @@
+scrape_configs:
+- http_sd_configs:
+  - url: ftp://example.com

config/testdata/http_url_no_host.bad.yml

@@ -0,0 +1,3 @@
+scrape_configs:
+- http_sd_configs:
+  - url: http://

config/testdata/http_url_no_scheme.bad.yml

@@ -0,0 +1,3 @@
+scrape_configs:
+- http_sd_configs:
+    - url: invalid

config/testdata/scrape_body_size_limit.bad.yml

@@ -0,0 +1,3 @@
+scrape_configs:
+- job_name: prometheus
+  body_size_limit: 100

discovery/aws/ec2.go

@@ -27,7 +27,7 @@ import (
 	"github.com/aws/aws-sdk-go/aws/ec2metadata"
 	"github.com/aws/aws-sdk-go/aws/session"
 	"github.com/aws/aws-sdk-go/service/ec2"
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/pkg/errors"
 	"github.com/prometheus/common/config"
 	"github.com/prometheus/common/model"

discovery/aws/lightsail.go

@@ -27,7 +27,7 @@ import (
 	"github.com/aws/aws-sdk-go/aws/ec2metadata"
 	"github.com/aws/aws-sdk-go/aws/session"
 	"github.com/aws/aws-sdk-go/service/lightsail"
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/pkg/errors"
 	"github.com/prometheus/common/config"
 	"github.com/prometheus/common/model"

discovery/azure/azure.go

@@ -27,8 +27,8 @@ import (
 	"github.com/Azure/go-autorest/autorest"
 	"github.com/Azure/go-autorest/autorest/adal"
 	"github.com/Azure/go-autorest/autorest/azure"
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 	"github.com/pkg/errors"
 	config_util "github.com/prometheus/common/config"
 	"github.com/prometheus/common/model"

discovery/consul/consul.go

@@ -17,15 +17,13 @@ import (
 	"context"
 	"fmt"
 	"net"
-	"net/http"
 	"strconv"
 	"strings"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 	consul "github.com/hashicorp/consul/api"
-	conntrack "github.com/mwitkow/go-conntrack"
 	"github.com/pkg/errors"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/common/config"
@@ -60,6 +58,8 @@ const (
 	servicePortLabel = model.MetaLabelPrefix + "consul_service_port"
 	// datacenterLabel is the name of the label containing the datacenter ID.
 	datacenterLabel = model.MetaLabelPrefix + "consul_dc"
+	// namespaceLabel is the name of the label containing the namespace (Consul Enterprise only).
+	namespaceLabel = model.MetaLabelPrefix + "consul_namespace"
 	// taggedAddressesLabel is the prefix for the labels mapping to a target's tagged addresses.
 	taggedAddressesLabel = model.MetaLabelPrefix + "consul_tagged_address_"
 	// serviceIDLabel is the name of the label containing the service ID.
@@ -92,18 +92,18 @@ var (
 
 	// DefaultSDConfig is the default Consul SD configuration.
 	DefaultSDConfig = SDConfig{
-		TagSeparator:    ",",
+		TagSeparator:     ",",
-		Scheme:          "http",
+		Scheme:           "http",
-		Server:          "localhost:8500",
+		Server:           "localhost:8500",
-		AllowStale:      true,
+		AllowStale:       true,
-		RefreshInterval: model.Duration(30 * time.Second),
+		RefreshInterval:  model.Duration(30 * time.Second),
+		HTTPClientConfig: config.DefaultHTTPClientConfig,
 	}
 )
 
 func init() {
 	discovery.RegisterConfig(&SDConfig{})
-	prometheus.MustRegister(rpcFailuresCount)
+	prometheus.MustRegister(rpcFailuresCount, rpcDuration)
-	prometheus.MustRegister(rpcDuration)
 }
 
 // SDConfig is the configuration for Consul service discovery.
@@ -111,6 +111,7 @@ type SDConfig struct {
 	Server       string        `yaml:"server,omitempty"`
 	Token        config.Secret `yaml:"token,omitempty"`
 	Datacenter   string        `yaml:"datacenter,omitempty"`
+	Namespace    string        `yaml:"namespace,omitempty"`
 	TagSeparator string        `yaml:"tag_separator,omitempty"`
 	Scheme       string        `yaml:"scheme,omitempty"`
 	Username     string        `yaml:"username,omitempty"`
@@ -134,7 +135,7 @@ type SDConfig struct {
 	// Desired node metadata.
 	NodeMeta map[string]string `yaml:"node_meta,omitempty"`
 
-	TLSConfig config.TLSConfig `yaml:"tls_config,omitempty"`
+	HTTPClientConfig config.HTTPClientConfig `yaml:",inline"`
 }
 
 // Name returns the name of the Config.
@@ -147,7 +148,7 @@ func (c *SDConfig) NewDiscoverer(opts discovery.DiscovererOptions) (discovery.Di
 
 // SetDirectory joins any relative file paths with dir.
 func (c *SDConfig) SetDirectory(dir string) {
-	c.TLSConfig.SetDirectory(dir)
+	c.HTTPClientConfig.SetDirectory(dir)
 }
 
 // UnmarshalYAML implements the yaml.Unmarshaler interface.
@@ -161,7 +162,19 @@ func (c *SDConfig) UnmarshalYAML(unmarshal func(interface{}) error) error {
 	if strings.TrimSpace(c.Server) == "" {
 		return errors.New("consul SD configuration requires a server address")
 	}
-	return nil
+	if c.Username != "" || c.Password != "" {
+		if c.HTTPClientConfig.BasicAuth != nil {
+			return errors.New("at most one of consul SD configuration username and password and basic auth can be configured")
+		}
+		c.HTTPClientConfig.BasicAuth = &config.BasicAuth{
+			Username: c.Username,
+			Password: c.Password,
+		}
+	}
+	if c.Token != "" && (c.HTTPClientConfig.Authorization != nil || c.HTTPClientConfig.OAuth2 != nil) {
+		return errors.New("at most one of consul SD token, authorization, or oauth2 can be configured")
+	}
+	return c.HTTPClientConfig.Validate()
 }
 
 // Discovery retrieves target information from a Consul server
@@ -169,6 +182,7 @@ func (c *SDConfig) UnmarshalYAML(unmarshal func(interface{}) error) error {
 type Discovery struct {
 	client           *consul.Client
 	clientDatacenter string
+	clientNamespace  string
 	tagSeparator     string
 	watchedServices  []string // Set of services which will be discovered.
 	watchedTags      []string // Tags used to filter instances of a service.
@@ -185,32 +199,18 @@ func NewDiscovery(conf *SDConfig, logger log.Logger) (*Discovery, error) {
 		logger = log.NewNopLogger()
 	}
 
-	tls, err := config.NewTLSConfig(&conf.TLSConfig)
+	wrapper, err := config.NewClientFromConfig(conf.HTTPClientConfig, "consul_sd", config.WithHTTP2Disabled(), config.WithIdleConnTimeout(2*time.Duration(watchTimeout)))
 	if err != nil {
 		return nil, err
 	}
-	transport := &http.Transport{
+	wrapper.Timeout = watchTimeout + 15*time.Second
-		IdleConnTimeout: 2 * time.Duration(watchTimeout),
-		TLSClientConfig: tls,
-		DialContext: conntrack.NewDialContextFunc(
-			conntrack.DialWithTracing(),
-			conntrack.DialWithName("consul_sd"),
-		),
-	}
-	wrapper := &http.Client{
-		Transport: transport,
-		Timeout:   time.Duration(watchTimeout) + 15*time.Second,
-	}
 
 	clientConf := &consul.Config{
 		Address:    conf.Server,
 		Scheme:     conf.Scheme,
 		Datacenter: conf.Datacenter,
+		Namespace:  conf.Namespace,
 		Token:      string(conf.Token),
-		HttpAuth: &consul.HttpBasicAuth{
-			Username: conf.Username,
-			Password: string(conf.Password),
-		},
 		HttpClient: wrapper,
 	}
 	client, err := consul.NewClient(clientConf)
@@ -226,7 +226,8 @@ func NewDiscovery(conf *SDConfig, logger log.Logger) (*Discovery, error) {
 		allowStale:       conf.AllowStale,
 		refreshInterval:  time.Duration(conf.RefreshInterval),
 		clientDatacenter: conf.Datacenter,
-		finalizer:        transport.CloseIdleConnections,
+		clientNamespace:  conf.Namespace,
+		finalizer:        wrapper.CloseIdleConnections,
 		logger:           logger,
 	}
 	return cd, nil
@@ -544,6 +545,7 @@ func (srv *consulService) watch(ctx context.Context, ch chan<- []*targetgroup.Gr
 			model.AddressLabel:  model.LabelValue(addr),
 			addressLabel:        model.LabelValue(serviceNode.Node.Address),
 			nodeLabel:           model.LabelValue(serviceNode.Node.Node),
+			namespaceLabel:      model.LabelValue(serviceNode.Service.Namespace),
 			tagsLabel:           model.LabelValue(tags),
 			serviceAddressLabel: model.LabelValue(serviceNode.Service.Address),
 			servicePortLabel:    model.LabelValue(strconv.Itoa(serviceNode.Service.Port)),

discovery/consul/consul_test.go

@@ -21,10 +21,12 @@ import (
 	"testing"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
+	"github.com/prometheus/common/config"
 	"github.com/prometheus/common/model"
 	"github.com/stretchr/testify/require"
 	"go.uber.org/goleak"
+	"gopkg.in/yaml.v2"
 
 	"github.com/prometheus/prometheus/discovery/targetgroup"
 )
@@ -397,3 +399,90 @@ func TestGetDatacenterShouldReturnError(t *testing.T) {
 		require.Equal(t, "", d.clientDatacenter)
 	}
 }
+
+func TestUnmarshalConfig(t *testing.T) {
+	unmarshal := func(d []byte) func(interface{}) error {
+		return func(o interface{}) error {
+			return yaml.Unmarshal(d, o)
+		}
+	}
+
+	goodConfig := DefaultSDConfig
+	goodConfig.Username = "123"
+	goodConfig.Password = "1234"
+	goodConfig.HTTPClientConfig = config.HTTPClientConfig{
+		BasicAuth: &config.BasicAuth{
+			Username: "123",
+			Password: "1234",
+		},
+		FollowRedirects: true,
+	}
+
+	cases := []struct {
+		name       string
+		config     string
+		expected   SDConfig
+		errMessage string
+	}{
+		{
+			name: "good",
+			config: `
+server: localhost:8500
+username: 123
+password: 1234
+`,
+			expected: goodConfig,
+		},
+		{
+			name: "username and password and basic auth configured",
+			config: `
+server: localhost:8500
+username: 123
+password: 1234
+basic_auth:
+  username: 12345
+  password: 123456
+`,
+			errMessage: "at most one of consul SD configuration username and password and basic auth can be configured",
+		},
+		{
+			name: "token and authorization configured",
+			config: `
+server: localhost:8500
+token: 1234567
+authorization:
+  credentials: 12345678
+`,
+			errMessage: "at most one of consul SD token, authorization, or oauth2 can be configured",
+		},
+		{
+			name: "token and oauth2 configured",
+			config: `
+server: localhost:8500
+token: 1234567
+oauth2:
+  client_id: 10
+  client_secret: 11
+  token_url: http://example.com
+`,
+			errMessage: "at most one of consul SD token, authorization, or oauth2 can be configured",
+		},
+	}
+
+	for _, test := range cases {
+		t.Run(test.name, func(t *testing.T) {
+			var config SDConfig
+			err := config.UnmarshalYAML(unmarshal([]byte(test.config)))
+			if err != nil {
+				require.Equalf(t, err.Error(), test.errMessage, "Expected error '%s', got '%v'", test.errMessage, err)
+				return
+			}
+			if test.errMessage != "" {
+				t.Errorf("Expected error %s, got none", test.errMessage)
+				return
+			}
+
+			require.Equal(t, config, test.expected)
+		})
+	}
+}

discovery/digitalocean/digitalocean.go

@@ -23,7 +23,7 @@ import (
 	"time"
 
 	"github.com/digitalocean/godo"
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/prometheus/common/config"
 	"github.com/prometheus/common/model"
 	"github.com/prometheus/common/version"

discovery/digitalocean/digitalocean_test.go

@@ -19,7 +19,7 @@ import (
 	"net/url"
 	"testing"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/prometheus/common/model"
 	"github.com/stretchr/testify/require"
 )

discovery/discovery.go

@@ -17,7 +17,7 @@ import (
 	"context"
 	"reflect"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/prometheus/common/config"
 
 	"github.com/prometheus/prometheus/discovery/targetgroup"

discovery/dns/dns.go

@@ -21,8 +21,8 @@ import (
 	"sync"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 	"github.com/miekg/dns"
 	"github.com/pkg/errors"
 	"github.com/prometheus/client_golang/prometheus"
@@ -68,8 +68,7 @@ var (
 
 func init() {
 	discovery.RegisterConfig(&SDConfig{})
-	prometheus.MustRegister(dnsSDLookupFailuresCount)
+	prometheus.MustRegister(dnsSDLookupFailuresCount, dnsSDLookupsCount)
-	prometheus.MustRegister(dnsSDLookupsCount)
 }
 
 // SDConfig is the configuration for DNS based service discovery.

discovery/dns/dns_test.go

@@ -20,7 +20,7 @@ import (
 	"testing"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/miekg/dns"
 	"github.com/prometheus/common/model"
 	"github.com/stretchr/testify/require"

discovery/eureka/eureka.go

@@ -21,7 +21,7 @@ import (
 	"strconv"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/pkg/errors"
 	"github.com/prometheus/common/config"
 	"github.com/prometheus/common/model"

discovery/file/file.go

@@ -25,8 +25,8 @@ import (
 	"sync"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 	"github.com/pkg/errors"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/common/config"
@@ -39,6 +39,19 @@ import (
 )
 
 var (
+	fileSDScanDuration = prometheus.NewSummary(
+		prometheus.SummaryOpts{
+			Name:       "prometheus_sd_file_scan_duration_seconds",
+			Help:       "The duration of the File-SD scan in seconds.",
+			Objectives: map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.99: 0.001},
+		})
+	fileSDReadErrorsCount = prometheus.NewCounter(
+		prometheus.CounterOpts{
+			Name: "prometheus_sd_file_read_errors_total",
+			Help: "The number of File-SD read errors.",
+		})
+	fileSDTimeStamp = NewTimestampCollector()
+
 	patFileSDName = regexp.MustCompile(`^[^*]*(\*[^/]*)?\.(json|yml|yaml|JSON|YML|YAML)$`)
 
 	// DefaultSDConfig is the default file SD configuration.
@@ -49,6 +62,7 @@ var (
 
 func init() {
 	discovery.RegisterConfig(&SDConfig{})
+	prometheus.MustRegister(fileSDScanDuration, fileSDReadErrorsCount, fileSDTimeStamp)
 }
 
 // SDConfig is the configuration for file based discovery.
@@ -153,27 +167,6 @@ func NewTimestampCollector() *TimestampCollector {
 	}
 }
 
-var (
-	fileSDScanDuration = prometheus.NewSummary(
-		prometheus.SummaryOpts{
-			Name:       "prometheus_sd_file_scan_duration_seconds",
-			Help:       "The duration of the File-SD scan in seconds.",
-			Objectives: map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.99: 0.001},
-		})
-	fileSDReadErrorsCount = prometheus.NewCounter(
-		prometheus.CounterOpts{
-			Name: "prometheus_sd_file_read_errors_total",
-			Help: "The number of File-SD read errors.",
-		})
-	fileSDTimeStamp = NewTimestampCollector()
-)
-
-func init() {
-	prometheus.MustRegister(fileSDScanDuration)
-	prometheus.MustRegister(fileSDReadErrorsCount)
-	prometheus.MustRegister(fileSDTimeStamp)
-}
-
 // Discovery provides service discovery functionality based
 // on files that contain target groups in JSON or YAML format. Refreshing
 // happens using file watches and periodic refreshes.

discovery/gce/gce.go

@@ -21,7 +21,7 @@ import (
 	"strings"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/pkg/errors"
 	"github.com/prometheus/common/model"
 	"golang.org/x/oauth2/google"

discovery/hetzner/hcloud.go

@@ -21,7 +21,7 @@ import (
 	"strconv"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/hetznercloud/hcloud-go/hcloud"
 	"github.com/prometheus/common/config"
 	"github.com/prometheus/common/model"

discovery/hetzner/hcloud_test.go

@@ -18,7 +18,7 @@ import (
 	"fmt"
 	"testing"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/prometheus/common/model"
 	"github.com/stretchr/testify/require"
 )

discovery/hetzner/hetzner.go

@@ -17,7 +17,7 @@ import (
 	"context"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/hetznercloud/hcloud-go/hcloud"
 	"github.com/pkg/errors"
 	"github.com/prometheus/common/config"

discovery/hetzner/robot.go

@@ -25,7 +25,7 @@ import (
 	"strings"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/pkg/errors"
 	"github.com/prometheus/common/config"
 	"github.com/prometheus/common/model"

discovery/hetzner/robot_test.go

@@ -18,7 +18,7 @@ import (
 	"fmt"
 	"testing"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/prometheus/common/config"
 	"github.com/prometheus/common/model"
 	"github.com/stretchr/testify/require"

discovery/http/http.go

@@ -0,0 +1,188 @@
+// Copyright 2021 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package http
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"net/url"
+	"time"
+
+	"github.com/go-kit/log"
+	"github.com/pkg/errors"
+	"github.com/prometheus/common/config"
+	"github.com/prometheus/common/model"
+	"github.com/prometheus/common/version"
+
+	"github.com/prometheus/prometheus/discovery"
+	"github.com/prometheus/prometheus/discovery/refresh"
+	"github.com/prometheus/prometheus/discovery/targetgroup"
+)
+
+var (
+	// DefaultSDConfig is the default HTTP SD configuration.
+	DefaultSDConfig = SDConfig{
+		RefreshInterval:  model.Duration(60 * time.Second),
+		HTTPClientConfig: config.DefaultHTTPClientConfig,
+	}
+	userAgent = fmt.Sprintf("Prometheus/%s", version.Version)
+)
+
+func init() {
+	discovery.RegisterConfig(&SDConfig{})
+}
+
+// SDConfig is the configuration for HTTP based discovery.
+type SDConfig struct {
+	HTTPClientConfig config.HTTPClientConfig `yaml:",inline"`
+	RefreshInterval  model.Duration          `yaml:"refresh_interval,omitempty"`
+	URL              string                  `yaml:"url"`
+}
+
+// Name returns the name of the Config.
+func (*SDConfig) Name() string { return "http" }
+
+// NewDiscoverer returns a Discoverer for the Config.
+func (c *SDConfig) NewDiscoverer(opts discovery.DiscovererOptions) (discovery.Discoverer, error) {
+	return NewDiscovery(c, opts.Logger)
+}
+
+// SetDirectory joins any relative file paths with dir.
+func (c *SDConfig) SetDirectory(dir string) {
+	c.HTTPClientConfig.SetDirectory(dir)
+}
+
+// UnmarshalYAML implements the yaml.Unmarshaler interface.
+func (c *SDConfig) UnmarshalYAML(unmarshal func(interface{}) error) error {
+	*c = DefaultSDConfig
+	type plain SDConfig
+	err := unmarshal((*plain)(c))
+	if err != nil {
+		return err
+	}
+	if c.URL == "" {
+		return fmt.Errorf("URL is missing")
+	}
+	parsedURL, err := url.Parse(c.URL)
+	if err != nil {
+		return err
+	}
+	if parsedURL.Scheme != "http" && parsedURL.Scheme != "https" {
+		return fmt.Errorf("URL scheme must be 'http' or 'https'")
+	}
+	if parsedURL.Host == "" {
+		return fmt.Errorf("host is missing in URL")
+	}
+	return nil
+}
+
+const httpSDURLLabel = model.MetaLabelPrefix + "url"
+
+// Discovery provides service discovery functionality based
+// on HTTP endpoints that return target groups in JSON format.
+type Discovery struct {
+	*refresh.Discovery
+	url             string
+	client          *http.Client
+	refreshInterval time.Duration
+}
+
+// NewDiscovery returns a new HTTP discovery for the given config.
+func NewDiscovery(conf *SDConfig, logger log.Logger) (*Discovery, error) {
+	if logger == nil {
+		logger = log.NewNopLogger()
+	}
+
+	client, err := config.NewClientFromConfig(conf.HTTPClientConfig, "http", config.WithHTTP2Disabled())
+	if err != nil {
+		return nil, err
+	}
+	client.Timeout = time.Duration(conf.RefreshInterval)
+
+	d := &Discovery{
+		url:             conf.URL,
+		client:          client,
+		refreshInterval: time.Duration(conf.RefreshInterval), // Stored to be sent as headers.
+	}
+
+	d.Discovery = refresh.NewDiscovery(
+		logger,
+		"http",
+		time.Duration(conf.RefreshInterval),
+		d.refresh,
+	)
+	return d, nil
+}
+
+func (d *Discovery) refresh(ctx context.Context) ([]*targetgroup.Group, error) {
+	req, err := http.NewRequest("GET", d.url, nil)
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("User-Agent", userAgent)
+	req.Header.Set("Accept", "application/json")
+	req.Header.Set("X-Prometheus-Refresh-Interval-Seconds", fmt.Sprintf("%f", d.refreshInterval.Seconds()))
+
+	resp, err := d.client.Do(req.WithContext(ctx))
+	if err != nil {
+		return nil, err
+	}
+	defer func() {
+		io.Copy(ioutil.Discard, resp.Body)
+		resp.Body.Close()
+	}()
+
+	if resp.StatusCode != http.StatusOK {
+		return nil, errors.Errorf("server returned HTTP status %s", resp.Status)
+	}
+
+	if resp.Header.Get("Content-Type") != "application/json" {
+		return nil, errors.Errorf("unsupported content type %q", resp.Header.Get("Content-Type"))
+	}
+
+	b, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+
+	var targetGroups []*targetgroup.Group
+
+	if err := json.Unmarshal(b, &targetGroups); err != nil {
+		return nil, err
+	}
+
+	for i, tg := range targetGroups {
+		if tg == nil {
+			err = errors.New("nil target group item found")
+			return nil, err
+		}
+
+		tg.Source = urlSource(d.url, i)
+		if tg.Labels == nil {
+			tg.Labels = model.LabelSet{}
+		}
+		tg.Labels[httpSDURLLabel] = model.LabelValue(d.url)
+	}
+
+	return targetGroups, nil
+}
+
+// urlSource returns a source ID for the i-th target group per URL.
+func urlSource(url string, i int) string {
+	return fmt.Sprintf("%s:%d", url, i)
+}

discovery/install/install.go

@@ -25,7 +25,9 @@ import (
 	_ "github.com/prometheus/prometheus/discovery/file"         // register file
 	_ "github.com/prometheus/prometheus/discovery/gce"          // register gce
 	_ "github.com/prometheus/prometheus/discovery/hetzner"      // register hetzner
+	_ "github.com/prometheus/prometheus/discovery/http"         // register http
 	_ "github.com/prometheus/prometheus/discovery/kubernetes"   // register kubernetes
+	_ "github.com/prometheus/prometheus/discovery/linode"       // register linode
 	_ "github.com/prometheus/prometheus/discovery/marathon"     // register marathon
 	_ "github.com/prometheus/prometheus/discovery/moby"         // register moby
 	_ "github.com/prometheus/prometheus/discovery/openstack"    // register openstack

discovery/kubernetes/endpoints.go

@@ -15,12 +15,13 @@ package kubernetes
 
 import (
 	"context"
-	"github.com/prometheus/prometheus/util/strutil"
 	"net"
 	"strconv"
 
-	"github.com/go-kit/kit/log"
+	"github.com/prometheus/prometheus/util/strutil"
-	"github.com/go-kit/kit/log/level"
+
+	"github.com/go-kit/log"
+	"github.com/go-kit/log/level"
 	"github.com/pkg/errors"
 	"github.com/prometheus/common/model"
 	apiv1 "k8s.io/api/core/v1"
@@ -221,7 +222,7 @@ func (e *Endpoints) buildEndpoints(eps *apiv1.Endpoints) *targetgroup.Group {
 		endpointsNameLabel: lv(eps.Name),
 	}
 	e.addServiceLabels(eps.Namespace, eps.Name, tg)
-	//add endponits labels metadata
+	// Add endpoints labels metadata.
 	for k, v := range eps.Labels {
 		ln := strutil.SanitizeLabelName(k)
 		tg.Labels[model.LabelName(endpointsLabelPrefix+ln)] = lv(v)

discovery/kubernetes/endpointslice.go

@@ -18,8 +18,8 @@ import (
 	"net"
 	"strconv"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 	"github.com/pkg/errors"
 	"github.com/prometheus/common/model"
 	apiv1 "k8s.io/api/core/v1"

discovery/kubernetes/ingress.go

@@ -16,8 +16,8 @@ package kubernetes
 import (
 	"context"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 	"github.com/pkg/errors"
 	"github.com/prometheus/common/model"
 	"k8s.io/api/networking/v1beta1"
@@ -147,6 +147,7 @@ const (
 	ingressSchemeLabel             = metaLabelPrefix + "ingress_scheme"
 	ingressHostLabel               = metaLabelPrefix + "ingress_host"
 	ingressPathLabel               = metaLabelPrefix + "ingress_path"
+	ingressClassNameLabel          = metaLabelPrefix + "ingress_class_name"
 )
 
 func ingressLabels(ingress *v1beta1.Ingress) model.LabelSet {
@@ -154,6 +155,9 @@ func ingressLabels(ingress *v1beta1.Ingress) model.LabelSet {
 	ls := make(model.LabelSet, 2*(len(ingress.Labels)+len(ingress.Annotations))+2)
 	ls[ingressNameLabel] = lv(ingress.Name)
 	ls[namespaceLabel] = lv(ingress.Namespace)
+	if ingress.Spec.IngressClassName != nil {
+		ls[ingressClassNameLabel] = lv(*ingress.Spec.IngressClassName)
+	}
 
 	for k, v := range ingress.Labels {
 		ln := strutil.SanitizeLabelName(k)

discovery/kubernetes/ingress_test.go

@@ -42,7 +42,8 @@ func makeIngress(tls TLSMode) *v1beta1.Ingress {
 			Annotations: map[string]string{"test/annotation": "testannotationvalue"},
 		},
 		Spec: v1beta1.IngressSpec{
-			TLS: nil,
+			IngressClassName: classString("testclass"),
+			TLS:              nil,
 			Rules: []v1beta1.IngressRule{
 				{
 					Host: "example.com",
@@ -84,6 +85,10 @@ func makeIngress(tls TLSMode) *v1beta1.Ingress {
 	return ret
 }
 
+func classString(v string) *string {
+	return &v
+}
+
 func expectedTargetGroups(ns string, tls TLSMode) map[string]*targetgroup.Group {
 	scheme1 := "http"
 	scheme2 := "http"
@@ -126,6 +131,7 @@ func expectedTargetGroups(ns string, tls TLSMode) map[string]*targetgroup.Group
 				"__meta_kubernetes_ingress_labelpresent_test_label":           "true",
 				"__meta_kubernetes_ingress_annotation_test_annotation":        "testannotationvalue",
 				"__meta_kubernetes_ingress_annotationpresent_test_annotation": "true",
+				"__meta_kubernetes_ingress_class_name":                        "testclass",
 			},
 			Source: key,
 		},

discovery/kubernetes/kubernetes.go

@@ -21,8 +21,8 @@ import (
 	"sync"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 	"github.com/pkg/errors"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/common/config"

discovery/kubernetes/kubernetes_test.go

@@ -19,7 +19,7 @@ import (
 	"testing"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/stretchr/testify/require"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/client-go/kubernetes"
@@ -110,8 +110,8 @@ func (d k8sDiscoveryTest) Run(t *testing.T) {
 	}
 }
 
-// readResultWithTimeout reads all targegroups from channel with timeout.
+// readResultWithTimeout reads all targetgroups from channel with timeout.
-// It merges targegroups by source and sends the result to result channel.
+// It merges targetgroups by source and sends the result to result channel.
 func readResultWithTimeout(t *testing.T, ch <-chan []*targetgroup.Group, max int, timeout time.Duration, resChan chan<- map[string]*targetgroup.Group) {
 	res := make(map[string]*targetgroup.Group)
 Loop:

discovery/kubernetes/node.go

@@ -18,8 +18,8 @@ import (
 	"net"
 	"strconv"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 	"github.com/pkg/errors"
 	"github.com/prometheus/common/model"
 	apiv1 "k8s.io/api/core/v1"

discovery/kubernetes/pod.go

@@ -19,8 +19,8 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 	"github.com/pkg/errors"
 	"github.com/prometheus/common/model"
 	apiv1 "k8s.io/api/core/v1"

discovery/kubernetes/service.go

@@ -18,8 +18,8 @@ import (
 	"net"
 	"strconv"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 	"github.com/pkg/errors"
 	"github.com/prometheus/common/model"
 	apiv1 "k8s.io/api/core/v1"

discovery/linode/linode.go

@@ -0,0 +1,261 @@
+// Copyright 2021 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package linode
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"net/http"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/go-kit/log"
+	"github.com/linode/linodego"
+	"github.com/prometheus/common/config"
+	"github.com/prometheus/common/model"
+	"github.com/prometheus/common/version"
+
+	"github.com/prometheus/prometheus/discovery"
+	"github.com/prometheus/prometheus/discovery/refresh"
+	"github.com/prometheus/prometheus/discovery/targetgroup"
+)
+
+const (
+	linodeLabel                   = model.MetaLabelPrefix + "linode_"
+	linodeLabelID                 = linodeLabel + "instance_id"
+	linodeLabelName               = linodeLabel + "instance_label"
+	linodeLabelImage              = linodeLabel + "image"
+	linodeLabelPrivateIPv4        = linodeLabel + "private_ipv4"
+	linodeLabelPublicIPv4         = linodeLabel + "public_ipv4"
+	linodeLabelPublicIPv6         = linodeLabel + "public_ipv6"
+	linodeLabelPrivateIPv4RDNS    = linodeLabel + "private_ipv4_rdns"
+	linodeLabelPublicIPv4RDNS     = linodeLabel + "public_ipv4_rdns"
+	linodeLabelPublicIPv6RDNS     = linodeLabel + "public_ipv6_rdns"
+	linodeLabelRegion             = linodeLabel + "region"
+	linodeLabelType               = linodeLabel + "type"
+	linodeLabelStatus             = linodeLabel + "status"
+	linodeLabelTags               = linodeLabel + "tags"
+	linodeLabelGroup              = linodeLabel + "group"
+	linodeLabelHypervisor         = linodeLabel + "hypervisor"
+	linodeLabelBackups            = linodeLabel + "backups"
+	linodeLabelSpecsDiskBytes     = linodeLabel + "specs_disk_bytes"
+	linodeLabelSpecsMemoryBytes   = linodeLabel + "specs_memory_bytes"
+	linodeLabelSpecsVCPUs         = linodeLabel + "specs_vcpus"
+	linodeLabelSpecsTransferBytes = linodeLabel + "specs_transfer_bytes"
+	linodeLabelExtraIPs           = linodeLabel + "extra_ips"
+)
+
+// DefaultSDConfig is the default Linode SD configuration.
+var DefaultSDConfig = SDConfig{
+	TagSeparator:     ",",
+	Port:             80,
+	RefreshInterval:  model.Duration(60 * time.Second),
+	HTTPClientConfig: config.DefaultHTTPClientConfig,
+}
+
+func init() {
+	discovery.RegisterConfig(&SDConfig{})
+}
+
+// SDConfig is the configuration for Linode based service discovery.
+type SDConfig struct {
+	HTTPClientConfig config.HTTPClientConfig `yaml:",inline"`
+
+	RefreshInterval model.Duration `yaml:"refresh_interval"`
+	Port            int            `yaml:"port"`
+	TagSeparator    string         `yaml:"tag_separator,omitempty"`
+}
+
+// Name returns the name of the Config.
+func (*SDConfig) Name() string { return "linode" }
+
+// NewDiscoverer returns a Discoverer for the Config.
+func (c *SDConfig) NewDiscoverer(opts discovery.DiscovererOptions) (discovery.Discoverer, error) {
+	return NewDiscovery(c, opts.Logger)
+}
+
+// SetDirectory joins any relative file paths with dir.
+func (c *SDConfig) SetDirectory(dir string) {
+	c.HTTPClientConfig.SetDirectory(dir)
+}
+
+// UnmarshalYAML implements the yaml.Unmarshaler interface.
+func (c *SDConfig) UnmarshalYAML(unmarshal func(interface{}) error) error {
+	*c = DefaultSDConfig
+	type plain SDConfig
+	err := unmarshal((*plain)(c))
+	if err != nil {
+		return err
+	}
+	return c.HTTPClientConfig.Validate()
+}
+
+// Discovery periodically performs Linode requests. It implements
+// the Discoverer interface.
+type Discovery struct {
+	*refresh.Discovery
+	client       *linodego.Client
+	port         int
+	tagSeparator string
+}
+
+// NewDiscovery returns a new Discovery which periodically refreshes its targets.
+func NewDiscovery(conf *SDConfig, logger log.Logger) (*Discovery, error) {
+	d := &Discovery{
+		port:         conf.Port,
+		tagSeparator: conf.TagSeparator,
+	}
+
+	rt, err := config.NewRoundTripperFromConfig(conf.HTTPClientConfig, "linode_sd", config.WithHTTP2Disabled())
+	if err != nil {
+		return nil, err
+	}
+
+	client := linodego.NewClient(
+		&http.Client{
+			Transport: rt,
+			Timeout:   time.Duration(conf.RefreshInterval),
+		},
+	)
+	client.SetUserAgent(fmt.Sprintf("Prometheus/%s", version.Version))
+	d.client = &client
+
+	d.Discovery = refresh.NewDiscovery(
+		logger,
+		"linode",
+		time.Duration(conf.RefreshInterval),
+		d.refresh,
+	)
+	return d, nil
+}
+
+func (d *Discovery) refresh(ctx context.Context) ([]*targetgroup.Group, error) {
+	tg := &targetgroup.Group{
+		Source: "Linode",
+	}
+
+	// Gather all linode instances.
+	instances, err := d.client.ListInstances(ctx, &linodego.ListOptions{})
+	if err != nil {
+		return nil, err
+	}
+
+	// Gather detailed IP address info for all IPs on all linode instances.
+	detailedIPs, err := d.client.ListIPAddresses(ctx, &linodego.ListOptions{})
+	if err != nil {
+		return nil, err
+	}
+
+	for _, instance := range instances {
+		if len(instance.IPv4) == 0 {
+			continue
+		}
+
+		var (
+			privateIPv4, publicIPv4, publicIPv6             string
+			privateIPv4RDNS, publicIPv4RDNS, publicIPv6RDNS string
+			backupsStatus                                   string
+			extraIPs                                        []string
+		)
+
+		for _, ip := range instance.IPv4 {
+			for _, detailedIP := range detailedIPs {
+				if detailedIP.Address != ip.String() {
+					continue
+				}
+
+				if detailedIP.Public && publicIPv4 == "" {
+					publicIPv4 = detailedIP.Address
+
+					if detailedIP.RDNS != "" && detailedIP.RDNS != "null" {
+						publicIPv4RDNS = detailedIP.RDNS
+					}
+				} else if !detailedIP.Public && privateIPv4 == "" {
+					privateIPv4 = detailedIP.Address
+
+					if detailedIP.RDNS != "" && detailedIP.RDNS != "null" {
+						privateIPv4RDNS = detailedIP.RDNS
+					}
+				} else {
+					extraIPs = append(extraIPs, detailedIP.Address)
+				}
+			}
+		}
+
+		if instance.IPv6 != "" {
+			for _, detailedIP := range detailedIPs {
+				if detailedIP.Address != strings.Split(instance.IPv6, "/")[0] {
+					continue
+				}
+
+				publicIPv6 = detailedIP.Address
+
+				if detailedIP.RDNS != "" && detailedIP.RDNS != "null" {
+					publicIPv6RDNS = detailedIP.RDNS
+				}
+			}
+		}
+
+		if instance.Backups.Enabled {
+			backupsStatus = "enabled"
+		} else {
+			backupsStatus = "disabled"
+		}
+
+		labels := model.LabelSet{
+			linodeLabelID:                 model.LabelValue(fmt.Sprintf("%d", instance.ID)),
+			linodeLabelName:               model.LabelValue(instance.Label),
+			linodeLabelImage:              model.LabelValue(instance.Image),
+			linodeLabelPrivateIPv4:        model.LabelValue(privateIPv4),
+			linodeLabelPublicIPv4:         model.LabelValue(publicIPv4),
+			linodeLabelPublicIPv6:         model.LabelValue(publicIPv6),
+			linodeLabelPrivateIPv4RDNS:    model.LabelValue(privateIPv4RDNS),
+			linodeLabelPublicIPv4RDNS:     model.LabelValue(publicIPv4RDNS),
+			linodeLabelPublicIPv6RDNS:     model.LabelValue(publicIPv6RDNS),
+			linodeLabelRegion:             model.LabelValue(instance.Region),
+			linodeLabelType:               model.LabelValue(instance.Type),
+			linodeLabelStatus:             model.LabelValue(instance.Status),
+			linodeLabelGroup:              model.LabelValue(instance.Group),
+			linodeLabelHypervisor:         model.LabelValue(instance.Hypervisor),
+			linodeLabelBackups:            model.LabelValue(backupsStatus),
+			linodeLabelSpecsDiskBytes:     model.LabelValue(fmt.Sprintf("%d", instance.Specs.Disk<<20)),
+			linodeLabelSpecsMemoryBytes:   model.LabelValue(fmt.Sprintf("%d", instance.Specs.Memory<<20)),
+			linodeLabelSpecsVCPUs:         model.LabelValue(fmt.Sprintf("%d", instance.Specs.VCPUs)),
+			linodeLabelSpecsTransferBytes: model.LabelValue(fmt.Sprintf("%d", instance.Specs.Transfer<<20)),
+		}
+
+		addr := net.JoinHostPort(publicIPv4, strconv.FormatUint(uint64(d.port), 10))
+		labels[model.AddressLabel] = model.LabelValue(addr)
+
+		if len(instance.Tags) > 0 {
+			// We surround the separated list with the separator as well. This way regular expressions
+			// in relabeling rules don't have to consider tag positions.
+			tags := d.tagSeparator + strings.Join(instance.Tags, d.tagSeparator) + d.tagSeparator
+			labels[linodeLabelTags] = model.LabelValue(tags)
+		}
+
+		if len(extraIPs) > 0 {
+			// This instance has more than one of at least one type of IP address (public, private,
+			// IPv4, IPv6, etc. We provide those extra IPs found here just like we do for instance
+			// tags, we surround a separated list with the tagSeparator config.
+			ips := d.tagSeparator + strings.Join(extraIPs, d.tagSeparator) + d.tagSeparator
+			labels[linodeLabelExtraIPs] = model.LabelValue(ips)
+		}
+
+		tg.Targets = append(tg.Targets, labels)
+	}
+	return []*targetgroup.Group{tg}, nil
+}

discovery/linode/linode_test.go

@@ -0,0 +1,170 @@
+// Copyright 2021 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package linode
+
+import (
+	"context"
+	"fmt"
+	"net/url"
+	"testing"
+
+	"github.com/go-kit/log"
+	"github.com/prometheus/common/config"
+	"github.com/prometheus/common/model"
+	"github.com/stretchr/testify/require"
+)
+
+type LinodeSDTestSuite struct {
+	Mock *SDMock
+}
+
+func (s *LinodeSDTestSuite) TearDownSuite() {
+	s.Mock.ShutdownServer()
+}
+
+func (s *LinodeSDTestSuite) SetupTest(t *testing.T) {
+	s.Mock = NewSDMock(t)
+	s.Mock.Setup()
+
+	s.Mock.HandleLinodeInstancesList()
+	s.Mock.HandleLinodeNeworkingIPs()
+}
+
+func TestLinodeSDRefresh(t *testing.T) {
+	sdmock := &LinodeSDTestSuite{}
+	sdmock.SetupTest(t)
+	t.Cleanup(sdmock.TearDownSuite)
+
+	cfg := DefaultSDConfig
+	cfg.HTTPClientConfig.Authorization = &config.Authorization{
+		Credentials: tokenID,
+		Type:        "Bearer",
+	}
+	d, err := NewDiscovery(&cfg, log.NewNopLogger())
+	require.NoError(t, err)
+	endpoint, err := url.Parse(sdmock.Mock.Endpoint())
+	require.NoError(t, err)
+	d.client.SetBaseURL(fmt.Sprintf("%s/v4", endpoint.String()))
+
+	tgs, err := d.refresh(context.Background())
+	require.NoError(t, err)
+
+	require.Equal(t, 1, len(tgs))
+
+	tg := tgs[0]
+	require.NotNil(t, tg)
+	require.NotNil(t, tg.Targets)
+	require.Equal(t, 4, len(tg.Targets))
+
+	for i, lbls := range []model.LabelSet{
+		{
+			"__address__":                        model.LabelValue("45.33.82.151:80"),
+			"__meta_linode_instance_id":          model.LabelValue("26838044"),
+			"__meta_linode_instance_label":       model.LabelValue("prometheus-linode-sd-exporter-1"),
+			"__meta_linode_image":                model.LabelValue("linode/arch"),
+			"__meta_linode_private_ipv4":         model.LabelValue("192.168.170.51"),
+			"__meta_linode_public_ipv4":          model.LabelValue("45.33.82.151"),
+			"__meta_linode_public_ipv6":          model.LabelValue("2600:3c03::f03c:92ff:fe1a:1382"),
+			"__meta_linode_private_ipv4_rdns":    model.LabelValue(""),
+			"__meta_linode_public_ipv4_rdns":     model.LabelValue("li1028-151.members.linode.com"),
+			"__meta_linode_public_ipv6_rdns":     model.LabelValue(""),
+			"__meta_linode_region":               model.LabelValue("us-east"),
+			"__meta_linode_type":                 model.LabelValue("g6-standard-2"),
+			"__meta_linode_status":               model.LabelValue("running"),
+			"__meta_linode_tags":                 model.LabelValue(",monitoring,"),
+			"__meta_linode_group":                model.LabelValue(""),
+			"__meta_linode_hypervisor":           model.LabelValue("kvm"),
+			"__meta_linode_backups":              model.LabelValue("disabled"),
+			"__meta_linode_specs_disk_bytes":     model.LabelValue("85899345920"),
+			"__meta_linode_specs_memory_bytes":   model.LabelValue("4294967296"),
+			"__meta_linode_specs_vcpus":          model.LabelValue("2"),
+			"__meta_linode_specs_transfer_bytes": model.LabelValue("4194304000"),
+			"__meta_linode_extra_ips":            model.LabelValue(",96.126.108.16,192.168.201.25,"),
+		},
+		{
+			"__address__":                        model.LabelValue("139.162.196.43:80"),
+			"__meta_linode_instance_id":          model.LabelValue("26848419"),
+			"__meta_linode_instance_label":       model.LabelValue("prometheus-linode-sd-exporter-2"),
+			"__meta_linode_image":                model.LabelValue("linode/debian10"),
+			"__meta_linode_private_ipv4":         model.LabelValue(""),
+			"__meta_linode_public_ipv4":          model.LabelValue("139.162.196.43"),
+			"__meta_linode_public_ipv6":          model.LabelValue("2a01:7e00::f03c:92ff:fe1a:9976"),
+			"__meta_linode_private_ipv4_rdns":    model.LabelValue(""),
+			"__meta_linode_public_ipv4_rdns":     model.LabelValue("li1359-43.members.linode.com"),
+			"__meta_linode_public_ipv6_rdns":     model.LabelValue(""),
+			"__meta_linode_region":               model.LabelValue("eu-west"),
+			"__meta_linode_type":                 model.LabelValue("g6-standard-2"),
+			"__meta_linode_status":               model.LabelValue("running"),
+			"__meta_linode_tags":                 model.LabelValue(",monitoring,"),
+			"__meta_linode_group":                model.LabelValue(""),
+			"__meta_linode_hypervisor":           model.LabelValue("kvm"),
+			"__meta_linode_backups":              model.LabelValue("disabled"),
+			"__meta_linode_specs_disk_bytes":     model.LabelValue("85899345920"),
+			"__meta_linode_specs_memory_bytes":   model.LabelValue("4294967296"),
+			"__meta_linode_specs_vcpus":          model.LabelValue("2"),
+			"__meta_linode_specs_transfer_bytes": model.LabelValue("4194304000"),
+		},
+		{
+			"__address__":                        model.LabelValue("192.53.120.25:80"),
+			"__meta_linode_instance_id":          model.LabelValue("26837938"),
+			"__meta_linode_instance_label":       model.LabelValue("prometheus-linode-sd-exporter-3"),
+			"__meta_linode_image":                model.LabelValue("linode/ubuntu20.04"),
+			"__meta_linode_private_ipv4":         model.LabelValue(""),
+			"__meta_linode_public_ipv4":          model.LabelValue("192.53.120.25"),
+			"__meta_linode_public_ipv6":          model.LabelValue("2600:3c04::f03c:92ff:fe1a:fb68"),
+			"__meta_linode_private_ipv4_rdns":    model.LabelValue(""),
+			"__meta_linode_public_ipv4_rdns":     model.LabelValue("li2216-25.members.linode.com"),
+			"__meta_linode_public_ipv6_rdns":     model.LabelValue(""),
+			"__meta_linode_region":               model.LabelValue("ca-central"),
+			"__meta_linode_type":                 model.LabelValue("g6-standard-1"),
+			"__meta_linode_status":               model.LabelValue("running"),
+			"__meta_linode_tags":                 model.LabelValue(",monitoring,"),
+			"__meta_linode_group":                model.LabelValue(""),
+			"__meta_linode_hypervisor":           model.LabelValue("kvm"),
+			"__meta_linode_backups":              model.LabelValue("disabled"),
+			"__meta_linode_specs_disk_bytes":     model.LabelValue("53687091200"),
+			"__meta_linode_specs_memory_bytes":   model.LabelValue("2147483648"),
+			"__meta_linode_specs_vcpus":          model.LabelValue("1"),
+			"__meta_linode_specs_transfer_bytes": model.LabelValue("2097152000"),
+		},
+		{
+			"__address__":                        model.LabelValue("66.228.47.103:80"),
+			"__meta_linode_instance_id":          model.LabelValue("26837992"),
+			"__meta_linode_instance_label":       model.LabelValue("prometheus-linode-sd-exporter-4"),
+			"__meta_linode_image":                model.LabelValue("linode/ubuntu20.04"),
+			"__meta_linode_private_ipv4":         model.LabelValue("192.168.148.94"),
+			"__meta_linode_public_ipv4":          model.LabelValue("66.228.47.103"),
+			"__meta_linode_public_ipv6":          model.LabelValue("2600:3c03::f03c:92ff:fe1a:fb4c"),
+			"__meta_linode_private_ipv4_rdns":    model.LabelValue(""),
+			"__meta_linode_public_ipv4_rdns":     model.LabelValue("li328-103.members.linode.com"),
+			"__meta_linode_public_ipv6_rdns":     model.LabelValue(""),
+			"__meta_linode_region":               model.LabelValue("us-east"),
+			"__meta_linode_type":                 model.LabelValue("g6-nanode-1"),
+			"__meta_linode_status":               model.LabelValue("running"),
+			"__meta_linode_tags":                 model.LabelValue(",monitoring,"),
+			"__meta_linode_group":                model.LabelValue(""),
+			"__meta_linode_hypervisor":           model.LabelValue("kvm"),
+			"__meta_linode_backups":              model.LabelValue("disabled"),
+			"__meta_linode_specs_disk_bytes":     model.LabelValue("26843545600"),
+			"__meta_linode_specs_memory_bytes":   model.LabelValue("1073741824"),
+			"__meta_linode_specs_vcpus":          model.LabelValue("1"),
+			"__meta_linode_specs_transfer_bytes": model.LabelValue("1048576000"),
+			"__meta_linode_extra_ips":            model.LabelValue(",172.104.18.104,"),
+		},
+	} {
+		t.Run(fmt.Sprintf("item %d", i), func(t *testing.T) {
+			require.Equal(t, lbls, tg.Targets[i])
+		})
+	}
+}

discovery/linode/mock_test.go

@@ -0,0 +1,415 @@
+// Copyright 2021 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package linode
+
+import (
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+)
+
+// SDMock is the interface for the Linode mock
+type SDMock struct {
+	t      *testing.T
+	Server *httptest.Server
+	Mux    *http.ServeMux
+}
+
+// NewSDMock returns a new SDMock.
+func NewSDMock(t *testing.T) *SDMock {
+	return &SDMock{
+		t: t,
+	}
+}
+
+// Endpoint returns the URI to the mock server
+func (m *SDMock) Endpoint() string {
+	return m.Server.URL + "/"
+}
+
+// Setup creates the mock server
+func (m *SDMock) Setup() {
+	m.Mux = http.NewServeMux()
+	m.Server = httptest.NewServer(m.Mux)
+}
+
+// ShutdownServer creates the mock server
+func (m *SDMock) ShutdownServer() {
+	m.Server.Close()
+}
+
+const tokenID = "7b2c56dd51edd90952c1b94c472b94b176f20c5c777e376849edd8ad1c6c03bb"
+
+// HandleLinodeInstancesList mocks linode instances list.
+func (m *SDMock) HandleLinodeInstancesList() {
+	m.Mux.HandleFunc("/v4/linode/instances", func(w http.ResponseWriter, r *http.Request) {
+		if r.Header.Get("Authorization") != fmt.Sprintf("Bearer %s", tokenID) {
+			w.WriteHeader(http.StatusUnauthorized)
+			return
+		}
+
+		w.Header().Set("content-type", "application/json; charset=utf-8")
+		w.WriteHeader(http.StatusOK)
+
+		fmt.Fprint(w, `
+{
+  "data": [
+    {
+      "id": 26838044,
+      "label": "prometheus-linode-sd-exporter-1",
+      "group": "",
+      "status": "running",
+      "created": "2021-05-12T04:23:44",
+      "updated": "2021-05-12T04:23:44",
+      "type": "g6-standard-2",
+      "ipv4": [
+        "45.33.82.151",
+        "96.126.108.16",
+        "192.168.170.51",
+        "192.168.201.25"
+      ],
+      "ipv6": "2600:3c03::f03c:92ff:fe1a:1382/128",
+      "image": "linode/arch",
+      "region": "us-east",
+      "specs": {
+        "disk": 81920,
+        "memory": 4096,
+        "vcpus": 2,
+        "gpus": 0,
+        "transfer": 4000
+      },
+      "alerts": {
+        "cpu": 180,
+        "network_in": 10,
+        "network_out": 10,
+        "transfer_quota": 80,
+        "io": 10000
+      },
+      "backups": {
+        "enabled": false,
+        "schedule": {
+          "day": null,
+          "window": null
+        },
+        "last_successful": null
+      },
+      "hypervisor": "kvm",
+      "watchdog_enabled": true,
+      "tags": [
+        "monitoring"
+      ]
+    },
+    {
+      "id": 26848419,
+      "label": "prometheus-linode-sd-exporter-2",
+      "group": "",
+      "status": "running",
+      "created": "2021-05-12T12:41:49",
+      "updated": "2021-05-12T12:41:49",
+      "type": "g6-standard-2",
+      "ipv4": [
+        "139.162.196.43"
+      ],
+      "ipv6": "2a01:7e00::f03c:92ff:fe1a:9976/128",
+      "image": "linode/debian10",
+      "region": "eu-west",
+      "specs": {
+        "disk": 81920,
+        "memory": 4096,
+        "vcpus": 2,
+        "gpus": 0,
+        "transfer": 4000
+      },
+      "alerts": {
+        "cpu": 180,
+        "network_in": 10,
+        "network_out": 10,
+        "transfer_quota": 80,
+        "io": 10000
+      },
+      "backups": {
+        "enabled": false,
+        "schedule": {
+          "day": null,
+          "window": null
+        },
+        "last_successful": null
+      },
+      "hypervisor": "kvm",
+      "watchdog_enabled": true,
+      "tags": [
+        "monitoring"
+      ]
+    },
+    {
+      "id": 26837938,
+      "label": "prometheus-linode-sd-exporter-3",
+      "group": "",
+      "status": "running",
+      "created": "2021-05-12T04:20:11",
+      "updated": "2021-05-12T04:20:11",
+      "type": "g6-standard-1",
+      "ipv4": [
+        "192.53.120.25"
+      ],
+      "ipv6": "2600:3c04::f03c:92ff:fe1a:fb68/128",
+      "image": "linode/ubuntu20.04",
+      "region": "ca-central",
+      "specs": {
+        "disk": 51200,
+        "memory": 2048,
+        "vcpus": 1,
+        "gpus": 0,
+        "transfer": 2000
+      },
+      "alerts": {
+        "cpu": 90,
+        "network_in": 10,
+        "network_out": 10,
+        "transfer_quota": 80,
+        "io": 10000
+      },
+      "backups": {
+        "enabled": false,
+        "schedule": {
+          "day": null,
+          "window": null
+        },
+        "last_successful": null
+      },
+      "hypervisor": "kvm",
+      "watchdog_enabled": true,
+      "tags": [
+        "monitoring"
+      ]
+    },
+    {
+      "id": 26837992,
+      "label": "prometheus-linode-sd-exporter-4",
+      "group": "",
+      "status": "running",
+      "created": "2021-05-12T04:22:06",
+      "updated": "2021-05-12T04:22:06",
+      "type": "g6-nanode-1",
+      "ipv4": [
+        "66.228.47.103",
+        "172.104.18.104",
+        "192.168.148.94"
+      ],
+      "ipv6": "2600:3c03::f03c:92ff:fe1a:fb4c/128",
+      "image": "linode/ubuntu20.04",
+      "region": "us-east",
+      "specs": {
+        "disk": 25600,
+        "memory": 1024,
+        "vcpus": 1,
+        "gpus": 0,
+        "transfer": 1000
+      },
+      "alerts": {
+        "cpu": 90,
+        "network_in": 10,
+        "network_out": 10,
+        "transfer_quota": 80,
+        "io": 10000
+      },
+      "backups": {
+        "enabled": false,
+        "schedule": {
+          "day": null,
+          "window": null
+        },
+        "last_successful": null
+      },
+      "hypervisor": "kvm",
+      "watchdog_enabled": true,
+      "tags": [
+        "monitoring"
+      ]
+    }
+  ],
+  "page": 1,
+  "pages": 1,
+  "results": 4
+}`,
+		)
+	})
+}
+
+// HandleLinodeNeworkingIPs mocks linode networking ips endpoint.
+func (m *SDMock) HandleLinodeNeworkingIPs() {
+	m.Mux.HandleFunc("/v4/networking/ips", func(w http.ResponseWriter, r *http.Request) {
+		if r.Header.Get("Authorization") != fmt.Sprintf("Bearer %s", tokenID) {
+			w.WriteHeader(http.StatusUnauthorized)
+			return
+		}
+
+		w.Header().Set("content-type", "application/json; charset=utf-8")
+		w.WriteHeader(http.StatusOK)
+
+		fmt.Fprint(w, `
+{
+  "page": 1,
+  "pages": 1,
+  "results": 13,
+  "data": [
+    {
+      "address": "192.53.120.25",
+      "gateway": "192.53.120.1",
+      "subnet_mask": "255.255.255.0",
+      "prefix": 24,
+      "type": "ipv4",
+      "public": true,
+      "rdns": "li2216-25.members.linode.com",
+      "linode_id": 26837938,
+      "region": "ca-central"
+    },
+    {
+      "address": "66.228.47.103",
+      "gateway": "66.228.47.1",
+      "subnet_mask": "255.255.255.0",
+      "prefix": 24,
+      "type": "ipv4",
+      "public": true,
+      "rdns": "li328-103.members.linode.com",
+      "linode_id": 26837992,
+      "region": "us-east"
+    },
+    {
+      "address": "172.104.18.104",
+      "gateway": "172.104.18.1",
+      "subnet_mask": "255.255.255.0",
+      "prefix": 24,
+      "type": "ipv4",
+      "public": true,
+      "rdns": "li1832-104.members.linode.com",
+      "linode_id": 26837992,
+      "region": "us-east"
+    },
+    {
+      "address": "192.168.148.94",
+      "gateway": null,
+      "subnet_mask": "255.255.128.0",
+      "prefix": 17,
+      "type": "ipv4",
+      "public": false,
+      "rdns": null,
+      "linode_id": 26837992,
+      "region": "us-east"
+    },
+    {
+      "address": "192.168.170.51",
+      "gateway": null,
+      "subnet_mask": "255.255.128.0",
+      "prefix": 17,
+      "type": "ipv4",
+      "public": false,
+      "rdns": null,
+      "linode_id": 26838044,
+      "region": "us-east"
+    },
+    {
+      "address": "96.126.108.16",
+      "gateway": "96.126.108.1",
+      "subnet_mask": "255.255.255.0",
+      "prefix": 24,
+      "type": "ipv4",
+      "public": true,
+      "rdns": "li365-16.members.linode.com",
+      "linode_id": 26838044,
+      "region": "us-east"
+    },
+    {
+      "address": "45.33.82.151",
+      "gateway": "45.33.82.1",
+      "subnet_mask": "255.255.255.0",
+      "prefix": 24,
+      "type": "ipv4",
+      "public": true,
+      "rdns": "li1028-151.members.linode.com",
+      "linode_id": 26838044,
+      "region": "us-east"
+    },
+    {
+      "address": "192.168.201.25",
+      "gateway": null,
+      "subnet_mask": "255.255.128.0",
+      "prefix": 17,
+      "type": "ipv4",
+      "public": false,
+      "rdns": null,
+      "linode_id": 26838044,
+      "region": "us-east"
+    },
+    {
+      "address": "139.162.196.43",
+      "gateway": "139.162.196.1",
+      "subnet_mask": "255.255.255.0",
+      "prefix": 24,
+      "type": "ipv4",
+      "public": true,
+      "rdns": "li1359-43.members.linode.com",
+      "linode_id": 26848419,
+      "region": "eu-west"
+    },
+    {
+      "address": "2600:3c04::f03c:92ff:fe1a:fb68",
+      "gateway": "fe80::1",
+      "subnet_mask": "ffff:ffff:ffff:ffff::",
+      "prefix": 64,
+      "type": "ipv6",
+      "rdns": null,
+      "linode_id": 26837938,
+      "region": "ca-central",
+      "public": true
+    },
+    {
+      "address": "2600:3c03::f03c:92ff:fe1a:fb4c",
+      "gateway": "fe80::1",
+      "subnet_mask": "ffff:ffff:ffff:ffff::",
+      "prefix": 64,
+      "type": "ipv6",
+      "rdns": null,
+      "linode_id": 26837992,
+      "region": "us-east",
+      "public": true
+    },
+    {
+      "address": "2600:3c03::f03c:92ff:fe1a:1382",
+      "gateway": "fe80::1",
+      "subnet_mask": "ffff:ffff:ffff:ffff::",
+      "prefix": 64,
+      "type": "ipv6",
+      "rdns": null,
+      "linode_id": 26838044,
+      "region": "us-east",
+      "public": true
+    },
+    {
+      "address": "2a01:7e00::f03c:92ff:fe1a:9976",
+      "gateway": "fe80::1",
+      "subnet_mask": "ffff:ffff:ffff:ffff::",
+      "prefix": 64,
+      "type": "ipv6",
+      "rdns": null,
+      "linode_id": 26848419,
+      "region": "eu-west",
+      "public": true
+    }
+  ]
+}`,
+		)
+	})
+}

discovery/manager.go

@@ -20,8 +20,8 @@ import (
 	"sync"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 	"github.com/prometheus/client_golang/prometheus"
 
 	"github.com/prometheus/prometheus/discovery/targetgroup"

discovery/manager_test.go

@@ -21,7 +21,7 @@ import (
 	"testing"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	client_testutil "github.com/prometheus/client_golang/prometheus/testutil"
 	"github.com/prometheus/common/model"
 	"github.com/stretchr/testify/require"

discovery/marathon/marathon.go

@@ -26,7 +26,7 @@ import (
 	"strings"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/pkg/errors"
 	"github.com/prometheus/common/config"
 	"github.com/prometheus/common/model"

discovery/moby/docker.go

@@ -25,7 +25,7 @@ import (
 	"github.com/docker/docker/api/types"
 	"github.com/docker/docker/api/types/filters"
 	"github.com/docker/docker/client"
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/prometheus/common/config"
 	"github.com/prometheus/common/model"
 	"github.com/prometheus/prometheus/discovery"

discovery/moby/docker_test.go

@@ -18,7 +18,7 @@ import (
 	"fmt"
 	"testing"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/prometheus/common/model"
 	"github.com/stretchr/testify/require"
 	"gopkg.in/yaml.v2"

discovery/moby/dockerswarm.go

@@ -22,7 +22,7 @@ import (
 
 	"github.com/docker/docker/api/types/filters"
 	"github.com/docker/docker/client"
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/prometheus/common/config"
 	"github.com/prometheus/common/model"
 	"github.com/prometheus/common/version"

discovery/moby/nodes_test.go

@@ -18,7 +18,7 @@ import (
 	"fmt"
 	"testing"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/prometheus/common/model"
 	"github.com/stretchr/testify/require"
 	"gopkg.in/yaml.v2"

discovery/moby/services_test.go

@@ -18,7 +18,7 @@ import (
 	"fmt"
 	"testing"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/prometheus/common/model"
 	"github.com/stretchr/testify/require"
 	"gopkg.in/yaml.v2"

discovery/moby/tasks_test.go

@@ -18,7 +18,7 @@ import (
 	"fmt"
 	"testing"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/prometheus/common/model"
 	"github.com/stretchr/testify/require"
 	"gopkg.in/yaml.v2"

discovery/openstack/hypervisor.go

@@ -18,7 +18,7 @@ import (
 	"fmt"
 	"net"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/gophercloud/gophercloud"
 	"github.com/gophercloud/gophercloud/openstack"
 	"github.com/gophercloud/gophercloud/openstack/compute/v2/extensions/hypervisors"

discovery/openstack/instance.go

@@ -18,8 +18,8 @@ import (
 	"fmt"
 	"net"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 	"github.com/gophercloud/gophercloud"
 	"github.com/gophercloud/gophercloud/openstack"
 	"github.com/gophercloud/gophercloud/openstack/compute/v2/extensions/floatingips"

discovery/openstack/openstack.go

@@ -19,7 +19,7 @@ import (
 	"net/http"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/gophercloud/gophercloud"
 	"github.com/gophercloud/gophercloud/openstack"
 	conntrack "github.com/mwitkow/go-conntrack"

discovery/refresh/refresh.go

@@ -17,8 +17,8 @@ import (
 	"context"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 	"github.com/prometheus/client_golang/prometheus"
 
 	"github.com/prometheus/prometheus/discovery/targetgroup"

discovery/scaleway/scaleway.go

@@ -20,7 +20,7 @@ import (
 	"strings"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/pkg/errors"
 	"github.com/prometheus/common/config"
 	"github.com/prometheus/common/model"
@@ -106,7 +106,7 @@ func (c SDConfig) Name() string {
 }
 
 // secretKeyForConfig returns a secret key that looks like a UUID, even if we
-// take the actuel secret from a file.
+// take the actual secret from a file.
 func (c SDConfig) secretKeyForConfig() string {
 	if c.SecretKeyFile != "" {
 		return "00000000-0000-0000-0000-000000000000"

discovery/triton/triton.go

@@ -24,7 +24,7 @@ import (
 	"strings"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	conntrack "github.com/mwitkow/go-conntrack"
 	"github.com/pkg/errors"
 	"github.com/prometheus/common/config"

discovery/zookeeper/zookeeper.go

@@ -22,7 +22,7 @@ import (
 	"strings"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/go-zookeeper/zk"
 	"github.com/pkg/errors"
 	"github.com/prometheus/common/model"

docs/configuration/configuration.md

@@ -42,6 +42,7 @@ Generic placeholders are defined as follows:
 * `<scheme>`: a string that can take the values `http` or `https`
 * `<secret>`: a regular string that is a secret, such as a password
 * `<string>`: a regular string
+* `<size>`: a size in bytes, e.g. `512MB`. A unit is required. Supported units: B, KB, MB, GB, TB, PB, EB.
 * `<tmpl_string>`: a string which is template-expanded before usage
 
 The other placeholders are specified separately.
@@ -239,6 +240,10 @@ gce_sd_configs:
 hetzner_sd_configs:
   [ - <hetzner_sd_config> ... ]
 
+# List of HTTP service discovery configurations.
+http_sd_configs:
+  [ - <http_sd_config> ... ]
+
 # List of Kubernetes service discovery configurations.
 kubernetes_sd_configs:
   [ - <kubernetes_sd_config> ... ]
@@ -247,6 +252,10 @@ kubernetes_sd_configs:
 lightsail_sd_configs:
   [ - <lightsail_sd_config> ... ]
 
+# List of Linode service discovery configurations.
+linode_sd_configs:
+  [ - <linode_sd_config> ... ]
+
 # List of Marathon service discovery configurations.
 marathon_sd_configs:
   [ - <marathon_sd_config> ... ]
@@ -283,6 +292,11 @@ relabel_configs:
 metric_relabel_configs:
   [ - <relabel_config> ... ]
 
+# An uncompressed response body larger than this many bytes will cause the
+# scrape to fail. 0 means no limit. Example: 100MB.
+# This is an experimental feature, this behaviour could
+# change or be removed in the future.
+[ body_size_limit: <size> | default = 0 ]
 # Per-scrape limit on number of scraped samples that will be accepted.
 # If more than this number of samples are present after metric relabeling
 # the entire scrape will be treated as failed. 0 means no limit.
@@ -333,7 +347,7 @@ A `tls_config` allows configuring TLS connections.
 [ insecure_skip_verify: <boolean> ]
 ```
 
-### `oauth2`
+### `<oauth2>`
 
 OAuth 2.0 authentication using the client credentials grant type.
 Prometheus fetches an access token from the specified endpoint with
@@ -430,13 +444,13 @@ The following meta labels are available on targets during [relabeling](#relabel_
 [ server: <host> | default = "localhost:8500" ]
 [ token: <secret> ]
 [ datacenter: <string> ]
+# Namespaces are only supported in Consul Enterprise.
+[ namespace: <string> ]
 [ scheme: <string> | default = "http" ]
+# The username and password fields are deprecated in favor of the basic_auth configuration.
 [ username: <string> ]
 [ password: <secret> ]
 
-tls_config:
-  [ <tls_config> ]
-
 # A list of services for which targets are retrieved. If omitted, all services
 # are scraped.
 services:
@@ -462,6 +476,42 @@ tags:
 # The time after which the provided names are refreshed.
 # On large setup it might be a good idea to increase this value because the catalog will change all the time.
 [ refresh_interval: <duration> | default = 30s ]
+
+# Authentication information used to authenticate to the consul server.
+# Note that `basic_auth`, `authorization` and `oauth2` options are
+# mutually exclusive.
+# `password` and `password_file` are mutually exclusive.
+
+# Optional HTTP basic authentication information.
+basic_auth:
+  [ username: <string> ]
+  [ password: <secret> ]
+  [ password_file: <string> ]
+
+# Optional `Authorization` header configuration.
+authorization:
+  # Sets the authentication type.
+  [ type: <string> | default: Bearer ]
+  # Sets the credentials. It is mutually exclusive with
+  # `credentials_file`.
+  [ credentials: <secret> ]
+  # Sets the credentials to the credentials read from the configured file.
+  # It is mutually exclusive with `credentials`.
+  [ credentials_file: <filename> ]
+
+# Optional OAuth 2.0 configuration.
+oauth2:
+  [ <oauth2> ]
+
+# Optional proxy URL.
+[ proxy_url: <string> ]
+
+# Configure whether HTTP requests follow HTTP 3xx redirects.
+[ follow_redirects: <bool> | default = true ]
+
+# TLS configuration.
+tls_config:
+  [ <tls_config> ]
 ```
 
 Note that the IP number and port used to scrape the targets is assembled as
@@ -512,14 +562,14 @@ basic_auth:
   [ password: <secret> ]
   [ password_file: <string> ]
 
-# Optional the `Authorization` header configuration.
+# Optional `Authorization` header configuration.
 authorization:
   # Sets the authentication type.
   [ type: <string> | default: Bearer ]
   # Sets the credentials. It is mutually exclusive with
   # `credentials_file`.
   [ credentials: <secret> ]
-  # Sets the credentials with the credentials read from the configured file.
+  # Sets the credentials to the credentials read from the configured file.
   # It is mutually exclusive with `credentials`.
   [ credentials_file: <filename> ]
 
@@ -609,14 +659,14 @@ basic_auth:
   [ password: <secret> ]
   [ password_file: <string> ]
 
-# Optional the `Authorization` header configuration.
+# Optional `Authorization` header configuration.
 authorization:
   # Sets the authentication type.
   [ type: <string> | default: Bearer ]
   # Sets the credentials. It is mutually exclusive with
   # `credentials_file`.
   [ credentials: <secret> ]
-  # Sets the credentials with the credentials read from the configured file.
+  # Sets the credentials to the credentials read from the configured file.
   # It is mutually exclusive with `credentials`.
   [ credentials_file: <filename> ]
 
@@ -772,14 +822,14 @@ basic_auth:
   [ password: <secret> ]
   [ password_file: <string> ]
 
-# Optional the `Authorization` header configuration.
+# Optional `Authorization` header configuration.
 authorization:
   # Sets the authentication type.
   [ type: <string> | default: Bearer ]
   # Sets the credentials. It is mutually exclusive with
   # `credentials_file`.
   [ credentials: <secret> ]
-  # Sets the credentials with the credentials read from the configured file.
+  # Sets the credentials to the credentials read from the configured file.
   # It is mutually exclusive with `credentials`.
   [ credentials_file: <filename> ]
 
@@ -1184,7 +1234,7 @@ basic_auth:
   [ password: <secret> ]
   [ password_file: <string> ]
 
-# Optional the `Authorization` header configuration. required when role is
+# Optional `Authorization` header configuration, required when role is
 # hcloud. Role robot does not support bearer token authentication.
 authorization:
   # Sets the authentication type.
@@ -1192,7 +1242,7 @@ authorization:
   # Sets the credentials. It is mutually exclusive with
   # `credentials_file`.
   [ credentials: <secret> ]
-  # Sets the credentials with the credentials read from the configured file.
+  # Sets the credentials to the credentials read from the configured file.
   # It is mutually exclusive with `credentials`.
   [ credentials_file: <filename> ]
 
@@ -1218,6 +1268,81 @@ tls_config:
 [ refresh_interval: <duration> | default = 60s ]
 ```
 
+### `<http_sd_config>`
+
+HTTP-based service discovery provides a more generic way to configure static targets
+and serves as an interface to plug in custom service discovery mechanisms.
+
+It fetches targets from an HTTP endpoint containing a list of zero or more
+`<static_config>`s. The target must reply with an HTTP 200 response.
+The HTTP header `Content-Type` must be `application/json`, and the body must be
+valid JSON.
+
+Example response body:
+
+```json
+[
+  {
+    "targets": [ "<host>", ... ],
+    "labels": {
+      "<labelname>": "<labelvalue>", ...
+    }
+  },
+  ...
+]
+```
+
+The endpoint is queried periodically at the specified
+refresh interval.
+
+Each target has a meta label `__meta_url` during the
+[relabeling phase](#relabel_config). Its value is set to the
+URL from which the target was extracted.
+
+```yaml
+# URL from which the targets are fetched.
+url: <string>
+
+# Refresh interval to re-query the endpoint.
+[ refresh_interval: <duration> | default = 60s ]
+
+# Authentication information used to authenticate to the API server.
+# Note that `basic_auth`, `authorization` and `oauth2` options are
+# mutually exclusive.
+# `password` and `password_file` are mutually exclusive.
+
+# Optional HTTP basic authentication information.
+basic_auth:
+  [ username: <string> ]
+  [ password: <secret> ]
+  [ password_file: <string> ]
+
+# Optional `Authorization` header configuration.
+authorization:
+  # Sets the authentication type.
+  [ type: <string> | default: Bearer ]
+  # Sets the credentials. It is mutually exclusive with
+  # `credentials_file`.
+  [ credentials: <secret> ]
+  # Sets the credentials to the credentials read from the configured file.
+  # It is mutually exclusive with `credentials`.
+  [ credentials_file: <filename> ]
+
+# Optional OAuth 2.0 configuration.
+oauth2:
+  [ <oauth2> ]
+
+# Optional proxy URL.
+[ proxy_url: <string> ]
+
+# Configure whether HTTP requests follow HTTP 3xx redirects.
+[ follow_redirects: <bool> | default = true ]
+
+# TLS configuration.
+tls_config:
+  [ <tls_config> ]
+```
+
 ### `<kubernetes_sd_config>`
 
 Kubernetes SD configurations allow retrieving scrape targets from
@@ -1332,6 +1457,7 @@ Available meta labels:
 * `__meta_kubernetes_ingress_labelpresent_<labelname>`: `true` for each label from the ingress object.
 * `__meta_kubernetes_ingress_annotation_<annotationname>`: Each annotation from the ingress object.
 * `__meta_kubernetes_ingress_annotationpresent_<annotationname>`: `true` for each annotation from the ingress object.
+* `__meta_kubernetes_ingress_class_name`: Class name from ingress spec, if present.
 * `__meta_kubernetes_ingress_scheme`: Protocol scheme of ingress, `https` if TLS
   config is set. Defaults to `http`.
 * `__meta_kubernetes_ingress_path`: Path from ingress spec. Defaults to `/`.
@@ -1361,14 +1487,14 @@ basic_auth:
   [ password: <secret> ]
   [ password_file: <string> ]
 
-# Optional the `Authorization` header configuration.
+# Optional `Authorization` header configuration.
 authorization:
   # Sets the authentication type.
   [ type: <string> | default: Bearer ]
   # Sets the credentials. It is mutually exclusive with
   # `credentials_file`.
   [ credentials: <secret> ]
-  # Sets the credentials with the credentials read from the configured file.
+  # Sets the credentials to the credentials read from the configured file.
   # It is mutually exclusive with `credentials`.
   [ credentials_file: <filename> ]
 
@@ -1464,6 +1590,84 @@ See below for the configuration options for Lightsail discovery:
 [ port: <int> | default = 80 ]
 ```
 
+### `<linode_sd_config>`
+
+Linode SD configurations allow retrieving scrape targets from [Linode's](https://www.linode.com/)
+Linode APIv4.
+This service discovery uses the public IPv4 address by default, by that can be
+changed with relabelling, as demonstrated in [the Prometheus linode-sd
+configuration file](/documentation/examples/prometheus-linode.yml).
+
+The following meta labels are available on targets during [relabeling](#relabel_config):
+
+* `__meta_linode_instance_id`: the id of the linode instance
+* `__meta_linode_instance_label`: the label of the linode instance
+* `__meta_linode_image`: the slug of the linode instance's image
+* `__meta_linode_private_ipv4`: the private IPv4 of the linode instance
+* `__meta_linode_public_ipv4`: the public IPv4 of the linode instance
+* `__meta_linode_public_ipv6`: the public IPv6 of the linode instance
+* `__meta_linode_region`: the region of the linode instance
+* `__meta_linode_type`: the type of the linode instance
+* `__meta_linode_status`: the status of the linode instance
+* `__meta_linode_tags`: a list of tags of the linode instance joined by the tag separator
+* `__meta_linode_group`: the display group a linode instance is a member of
+* `__meta_linode_hypervisor`: the virtualization software powering the linode instance
+* `__meta_linode_backups`: the backup service status of the linode instance
+* `__meta_linode_specs_disk_bytes`: the amount of storage space the linode instance has access to
+* `__meta_linode_specs_memory_bytes`: the amount of RAM the linode instance has access to
+* `__meta_linode_specs_vcpus`: the number of VCPUS this linode has access to
+* `__meta_linode_specs_transfer_bytes`: the amount of network transfer the linode instance is allotted each month
+* `__meta_linode_extra_ips`: a list of all extra IPv4 addresses assigned to the linode instance joined by the tag separator
+
+```yaml
+# Authentication information used to authenticate to the API server.
+# Note that `basic_auth` and `authorization` options are
+# mutually exclusive.
+# password and password_file are mutually exclusive.
+# Note: Linode APIv4 Token must be created with scopes: 'linodes:read_only' and 'ips:read_only'
+
+# Optional HTTP basic authentication information, not currently supported by Linode APIv4.
+basic_auth:
+  [ username: <string> ]
+  [ password: <secret> ]
+  [ password_file: <string> ]
+
+# Optional the `Authorization` header configuration.
+authorization:
+  # Sets the authentication type.
+  [ type: <string> | default: Bearer ]
+  # Sets the credentials. It is mutually exclusive with
+  # `credentials_file`.
+  [ credentials: <secret> ]
+  # Sets the credentials with the credentials read from the configured file.
+  # It is mutually exclusive with `credentials`.
+  [ credentials_file: <filename> ]
+
+# Optional OAuth 2.0 configuration.
+# Cannot be used at the same time as basic_auth or authorization.
+oauth2:
+  [ <oauth2> ]
+
+# Optional proxy URL.
+[ proxy_url: <string> ]
+
+# Configure whether HTTP requests follow HTTP 3xx redirects.
+[ follow_redirects: <bool> | default = true ]
+
+# TLS configuration.
+tls_config:
+  [ <tls_config> ]
+
+# The port to scrape metrics from.
+[ port: <int> | default = 80 ]
+
+# The string by which Linode Instance tags are joined into the tag label.
+[ tag_separator: <string> | default = , ]
+
+# The time after which the linode instances are refreshed.
+[ refresh_interval: <duration> | default = 60s ]
+```
+
 ### `<marathon_sd_config>`
 
 Marathon SD configurations allow retrieving scrape targets using the
@@ -1511,7 +1715,7 @@ basic_auth:
   [ password: <secret> ]
   [ password_file: <string> ]
 
-# Optional the `Authorization` header configuration.
+# Optional `Authorization` header configuration.
 # NOTE: The current version of DC/OS marathon (v1.11.0) does not support
 # standard `Authentication` header, use `auth_token` or `auth_token_file`
 # instead.
@@ -1521,7 +1725,7 @@ authorization:
   # Sets the credentials. It is mutually exclusive with
   # `credentials_file`.
   [ credentials: <secret> ]
-  # Sets the credentials with the credentials read from the configured file.
+  # Sets the credentials to the credentials read from the configured file.
   # It is mutually exclusive with `credentials`.
   [ credentials_file: <filename> ]
 
@@ -1717,14 +1921,14 @@ basic_auth:
   [ password: <secret> ]
   [ password_file: <string> ]
 
-# Optional the `Authorization` header configuration.
+# Optional `Authorization` header configuration.
 authorization:
   # Sets the authentication type.
   [ type: <string> | default: Bearer ]
   # Sets the credentials. It is mutually exclusive with
   # `credentials_file`.
   [ credentials: <secret> ]
-  # Sets the credentials with the credentials read from the configured file.
+  # Sets the credentials to the credentials read from the configured file.
   # It is mutually exclusive with `credentials`.
   [ credentials_file: <filename> ]
 
@@ -2000,14 +2204,14 @@ basic_auth:
   [ password: <secret> ]
   [ password_file: <string> ]
 
-# Optional the `Authorization` header configuration.
+# Optional `Authorization` header configuration.
 authorization:
   # Sets the authentication type.
   [ type: <string> | default: Bearer ]
   # Sets the credentials. It is mutually exclusive with
   # `credentials_file`.
   [ credentials: <secret> ]
-  # Sets the credentials with the credentials read from the configured file.
+  # Sets the credentials to the credentials read from the configured file.
   # It is mutually exclusive with `credentials`.
   [ credentials_file: <filename> ]
 
@@ -2070,6 +2274,10 @@ gce_sd_configs:
 hetzner_sd_configs:
   [ - <hetzner_sd_config> ... ]
 
+# List of HTTP service discovery configurations.
+http_sd_configs:
+  [ - <http_sd_config> ... ]
+
 # List of Kubernetes service discovery configurations.
 kubernetes_sd_configs:
   [ - <kubernetes_sd_config> ... ]
@@ -2078,6 +2286,10 @@ kubernetes_sd_configs:
 lightsail_sd_configs:
   [ - <lightsail_sd_config> ... ]
 
+# List of Linode service discovery configurations.
+linode_sd_configs:
+  [ - <linode_sd_config> ... ]
+
 # List of Marathon service discovery configurations.
 marathon_sd_configs:
   [ - <marathon_sd_config> ... ]
@@ -2152,14 +2364,14 @@ basic_auth:
   [ password: <secret> ]
   [ password_file: <string> ]
 
-# Optional the `Authorization` header configuration.
+# Optional `Authorization` header configuration.
 authorization:
   # Sets the authentication type.
   [ type: <string> | default: Bearer ]
   # Sets the credentials. It is mutually exclusive with
   # `credentials_file`.
   [ credentials: <secret> ]
-  # Sets the credentials with the credentials read from the configured file.
+  # Sets the credentials to the credentials read from the configured file.
   # It is mutually exclusive with `credentials`.
   [ credentials_file: <filename> ]
 
@@ -2270,14 +2482,14 @@ basic_auth:
   [ password: <secret> ]
   [ password_file: <string> ]
 
-# Optional the `Authorization` header configuration.
+# Optional `Authorization` header configuration.
 authorization:
   # Sets the authentication type.
   [ type: <string> | default: Bearer ]
   # Sets the credentials. It is mutually exclusive with
   # `credentials_file`.
   [ credentials: <secret> ]
-  # Sets the credentials with the credentials read from the configured file.
+  # Sets the credentials to the credentials read from the configured file.
   # It is mutually exclusive with `credentials`.
   [ credentials_file: <filename> ]
 

docs/configuration/template_reference.md

@@ -90,9 +90,9 @@ parameterize templates, and have a few other differences.
 
 ### Alert field templates
 
-`.Value`, `.Labels`, and `.ExternalLabels` contain the alert value, the alert
+`.Value`, `.Labels`, `.ExternalLabels`, and `.ExternalURL` contain the alert value, the alert
-labels, and the globally configured external labels, respectively. They are
+labels, the globally configured external labels, and the external URL (configured with `--web.external-url`) respectively. They are
-also exposed as the `$value`, `$labels`, and `$externalLabels` variables for
+also exposed as the `$value`, `$labels`, `$externalLabels`, and `$externalURL` variables for
 convenience.
 
 ### Console templates

docs/configuration/unit_testing_rules.md

@@ -59,6 +59,10 @@ promql_expr_test:
 # External labels accessible to the alert template.
 external_labels:
   [ <labelname>: <string> ... ]
+
+# External URL accessible to the alert template.
+# Usually set using --web.external-url.
+  [ external_url: <string> ]
 ```
 
 ### `<series>`

docs/querying/api.md

@@ -1033,6 +1033,39 @@ $ curl http://localhost:9090/api/v1/status/tsdb
 
 *New in v2.15*
 
+### WAL Replay Stats
+
+The following endpoint returns information about the WAL replay:
+
+```
+GET /api/v1/status/walreplay
+```
+
+**read**: The number of segments replayed so far.
+**total**: The total number segments needed to be replayed.
+**progress**: The progress of the replay (0 - 100%).
+**state**: The state of the replay. Possible states:
+- **waiting**: Waiting for the replay to start.
+- **in progress**: The replay is in progress.
+- **done**: The replay has finished.
+
+```json
+$ curl http://localhost:9090/api/v1/status/walreplay
+{
+  "status": "success",
+  "data": {
+    "min": 2,
+    "max": 5,
+    "current": 40,
+    "state": "in progress"
+  }
+}
+```
+
+NOTE: This endpoint is available before the server has been marked ready and is updated in real time to facilitate monitoring the progress of the WAL replay.
+
+*New in v2.28*
+
 ## TSDB Admin APIs
 These are APIs that expose database functionalities for the advanced user. These APIs are not enabled unless the `--web.enable-admin-api` is set.
 

documentation/examples/custom-sd/adapter-usage/main.go

@@ -26,8 +26,8 @@ import (
 	"strings"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 	"github.com/prometheus/common/model"
 	"gopkg.in/alecthomas/kingpin.v2"
 

documentation/examples/custom-sd/adapter/adapter.go

@@ -24,8 +24,8 @@ import (
 	"reflect"
 	"sort"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 	"github.com/prometheus/common/model"
 
 	"github.com/prometheus/prometheus/discovery"

documentation/examples/prometheus-linode.yml

@@ -0,0 +1,24 @@
+# A example scrape configuration for running Prometheus with
+# Linode.
+
+scrape_configs:
+  # Make Prometheus scrape itself for metrics.
+  - job_name: 'prometheus'
+    static_configs:
+    - targets: ['localhost:9090']
+
+  # Discover Node Exporter instances to scrape.
+  - job_name: 'node'
+    linode_sd_configs:
+      - authorization:
+        credentials: "<replace with a Personal Access Token with linodes:read_only + ips:read_only access>"
+    relabel_configs:
+      # Only scrape targets that have a tag 'monitoring'.
+      - source_labels: [__meta_linode_tags]
+        regex: '.*,monitoring,.*'
+        action: keep
+
+      # Use the public IPv6 address and port 9100 to scrape the target.
+      - source_labels: [__meta_linode_public_ipv6]
+        target_label: __address__
+        replacement: '[$1]:9100'

documentation/examples/remote_storage/remote_storage_adapter/graphite/client.go

@@ -21,8 +21,8 @@ import (
 	"sort"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 	"github.com/prometheus/common/model"
 )
 

documentation/examples/remote_storage/remote_storage_adapter/influxdb/client.go

@@ -20,8 +20,8 @@ import (
 	"os"
 	"strings"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 	influx "github.com/influxdata/influxdb/client/v2"
 	"github.com/pkg/errors"
 	"github.com/prometheus/client_golang/prometheus"

documentation/examples/remote_storage/remote_storage_adapter/main.go

@@ -25,8 +25,8 @@ import (
 	"sync"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 	"github.com/gogo/protobuf/proto"
 	"github.com/golang/snappy"
 	influx "github.com/influxdata/influxdb/client/v2"

documentation/examples/remote_storage/remote_storage_adapter/opentsdb/client.go

@@ -24,8 +24,8 @@ import (
 	"net/url"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 	"github.com/pkg/errors"
 	"github.com/prometheus/common/model"
 )

documentation/prometheus-mixin/alerts.libsonnet

@@ -275,6 +275,20 @@
               description: 'Prometheus %(prometheusName)s has dropped {{ printf "%%.0f" $value }} targets because some samples exceeded the configured label_limit, label_name_length_limit or label_value_length_limit.' % $._config,
             },
           },
+          {
+            alert: 'PrometheusTargetSyncFailure',
+            expr: |||
+              increase(prometheus_target_sync_failed_total{%(prometheusSelector)s}[30m]) > 0
+            ||| % $._config,
+            'for': '5m',
+            labels: {
+              severity: 'critical',
+            },
+            annotations: {
+              summary: 'Prometheus has failed to sync targets.',
+              description: '{{ printf "%%.0f" $value }} targets in Prometheus %(prometheusName)s have failed to sync because invalid configuration was supplied.' % $._config,
+            },
+          },
         ] + if $._config.prometheusHAGroupLabels == '' then self.rulesWithoutHA else self.rulesWithHA,
         rulesWithoutHA:: [
           {

documentation/prometheus-mixin/dashboards.libsonnet

@@ -54,11 +54,13 @@ local template = grafana.template;
         .addPanel(
           g.panel('Scrape failures') +
           g.queryPanel([
+            'sum by (job) (rate(prometheus_target_scrapes_exceeded_body_size_limit_total[1m]))',
             'sum by (job) (rate(prometheus_target_scrapes_exceeded_sample_limit_total[1m]))',
             'sum by (job) (rate(prometheus_target_scrapes_sample_duplicate_timestamp_total[1m]))',
             'sum by (job) (rate(prometheus_target_scrapes_sample_out_of_bounds_total[1m]))',
             'sum by (job) (rate(prometheus_target_scrapes_sample_out_of_order_total[1m]))',
           ], [
+            'exceeded body size limit: {{job}}',
             'exceeded sample limit: {{job}}',
             'duplicate timestamp: {{job}}',
             'out of bounds: {{job}}',

go.mod

@@ -3,38 +3,38 @@ module github.com/prometheus/prometheus
 go 1.14
 
 require (
-	github.com/Azure/azure-sdk-for-go v54.0.0+incompatible
+	github.com/Azure/azure-sdk-for-go v55.2.0+incompatible
-	github.com/Azure/go-autorest/autorest v0.11.18
+	github.com/Azure/go-autorest/autorest v0.11.19
-	github.com/Azure/go-autorest/autorest/adal v0.9.13
+	github.com/Azure/go-autorest/autorest/adal v0.9.14
 	github.com/Azure/go-autorest/autorest/to v0.4.0 // indirect
 	github.com/Azure/go-autorest/autorest/validation v0.3.1 // indirect
 	github.com/HdrHistogram/hdrhistogram-go v1.0.1 // indirect
 	github.com/Microsoft/go-winio v0.4.16 // indirect
 	github.com/alecthomas/units v0.0.0-20210208195552-ff826a37aa15
-	github.com/aws/aws-sdk-go v1.38.35
+	github.com/aws/aws-sdk-go v1.38.60
 	github.com/cespare/xxhash/v2 v2.1.1
 	github.com/containerd/containerd v1.4.3 // indirect
 	github.com/dgryski/go-sip13 v0.0.0-20200911182023-62edffca9245
-	github.com/digitalocean/godo v1.60.0
+	github.com/digitalocean/godo v1.62.0
 	github.com/docker/distribution v2.7.1+incompatible // indirect
-	github.com/docker/docker v20.10.6+incompatible
+	github.com/docker/docker v20.10.7+incompatible
 	github.com/docker/go-connections v0.4.0 // indirect
 	github.com/edsrzf/mmap-go v1.0.0
-	github.com/go-kit/kit v0.10.0
+	github.com/go-kit/log v0.1.0
 	github.com/go-logfmt/logfmt v0.5.0
 	github.com/go-openapi/strfmt v0.20.1
-	github.com/go-openapi/validate v0.20.2 // indirect
 	github.com/go-zookeeper/zk v1.0.2
 	github.com/gogo/protobuf v1.3.2
 	github.com/golang/snappy v0.0.3
-	github.com/google/pprof v0.0.0-20210504235042-3a04a4d88a10
+	github.com/google/pprof v0.0.0-20210609004039-a478d1d731e9
-	github.com/gophercloud/gophercloud v0.17.0
+	github.com/gophercloud/gophercloud v0.18.0
 	github.com/grpc-ecosystem/grpc-gateway v1.16.0
 	github.com/hashicorp/consul/api v1.8.1
-	github.com/hetznercloud/hcloud-go v1.25.0
+	github.com/hetznercloud/hcloud-go v1.26.2
-	github.com/influxdata/influxdb v1.8.5
+	github.com/influxdata/influxdb v1.9.2
 	github.com/json-iterator/go v1.1.11
-	github.com/miekg/dns v1.1.41
+	github.com/linode/linodego v0.28.5
+	github.com/miekg/dns v1.1.42
 	github.com/moby/term v0.0.0-20201216013528-df9cb8a40635 // indirect
 	github.com/morikuni/aec v1.0.0 // indirect
 	github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f
@@ -45,36 +45,36 @@ require (
 	github.com/opentracing-contrib/go-stdlib v1.0.0
 	github.com/opentracing/opentracing-go v1.2.0
 	github.com/pkg/errors v0.9.1
-	github.com/prometheus/alertmanager v0.21.0
+	github.com/prometheus/alertmanager v0.22.2
-	github.com/prometheus/client_golang v1.10.0
+	github.com/prometheus/client_golang v1.11.0
 	github.com/prometheus/client_model v0.2.0
-	github.com/prometheus/common v0.23.0
+	github.com/prometheus/common v0.29.0
 	github.com/prometheus/exporter-toolkit v0.5.1
 	github.com/scaleway/scaleway-sdk-go v1.0.0-beta.7.0.20210223165440-c65ae3540d44
 	github.com/shurcooL/httpfs v0.0.0-20190707220628-8d4bc4ba7749
 	github.com/shurcooL/vfsgen v0.0.0-20200824052919-0d455de96546
 	github.com/stretchr/testify v1.7.0
-	github.com/uber/jaeger-client-go v2.28.0+incompatible
+	github.com/uber/jaeger-client-go v2.29.1+incompatible
 	github.com/uber/jaeger-lib v2.4.1+incompatible
-	go.uber.org/atomic v1.7.0
+	go.uber.org/atomic v1.8.0
 	go.uber.org/goleak v1.1.10
-	golang.org/x/net v0.0.0-20210505214959-0714010a04ed
+	golang.org/x/net v0.0.0-20210610132358-84b48f89b13b
-	golang.org/x/oauth2 v0.0.0-20210427180440-81ed05c6b58c
+	golang.org/x/oauth2 v0.0.0-20210514164344-f6687ab2804c
 	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
-	golang.org/x/sys v0.0.0-20210503173754-0981d6026fa6
+	golang.org/x/sys v0.0.0-20210611083646-a4fc73990273
-	golang.org/x/time v0.0.0-20210220033141-f8bda1e9f3ba
+	golang.org/x/time v0.0.0-20210611083556-38a9dc6acbc6
-	golang.org/x/tools v0.1.0
+	golang.org/x/tools v0.1.3
-	google.golang.org/api v0.46.0
+	google.golang.org/api v0.48.0
 	gopkg.in/alecthomas/kingpin.v2 v2.2.6
 	gopkg.in/fsnotify/fsnotify.v1 v1.4.7
 	gopkg.in/yaml.v2 v2.4.0
 	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b
 	gotest.tools/v3 v3.0.3 // indirect
-	k8s.io/api v0.21.0
+	k8s.io/api v0.21.1
-	k8s.io/apimachinery v0.21.0
+	k8s.io/apimachinery v0.21.1
-	k8s.io/client-go v0.21.0
+	k8s.io/client-go v0.21.1
 	k8s.io/klog v1.0.0
-	k8s.io/klog/v2 v2.8.0
+	k8s.io/klog/v2 v2.9.0
 )
 
 replace (
@@ -82,13 +82,18 @@ replace (
 	k8s.io/klog/v2 => github.com/simonpasquier/klog-gokit/v2 v2.1.0
 )
 
+// Exclude linodego v1.0.0 as it is no longer published on github.
+exclude github.com/linode/linodego v1.0.0
+
+// Exclude grpc v1.30.0 because of breaking changes. See #7621.
 exclude (
-	// Exclude grpc v1.30.0 because of breaking changes. See #7621.
 	github.com/grpc-ecosystem/grpc-gateway v1.14.7
 	google.golang.org/api v0.30.0
+)
 
-	// Exclude pre-go-mod kubernetes tags, as they are older
+// Exclude pre-go-mod kubernetes tags, as they are older
-	// than v0.x releases but are picked when we update the dependencies.
+// than v0.x releases but are picked when we update the dependencies.
+exclude (
 	k8s.io/client-go v1.4.0
 	k8s.io/client-go v1.4.0+incompatible
 	k8s.io/client-go v1.5.0

go.sum

@@ -18,8 +18,9 @@ cloud.google.com/go v0.72.0/go.mod h1:M+5Vjvlc2wnp6tjzE102Dw08nGShTscUx2nZMufOKP
 cloud.google.com/go v0.74.0/go.mod h1:VV1xSbzvo+9QJOxLDaJfTjx5e+MePCpCWwvftOeQmWk=
 cloud.google.com/go v0.78.0/go.mod h1:QjdrLG0uq+YwhjoVOLsS1t7TW8fs36kLs4XO5R5ECHg=
 cloud.google.com/go v0.79.0/go.mod h1:3bzgcEeQlzbuEAYu4mrWhKqWjmpprinYgKJLgKHnbb8=
-cloud.google.com/go v0.81.0 h1:at8Tk2zUz63cLPR0JPWm5vp77pEZmzxEQBEfRKn1VV8=
 cloud.google.com/go v0.81.0/go.mod h1:mk/AM35KwGk/Nm2YSeZbxXdrNK3KZOYHmLkOqC2V6E0=
+cloud.google.com/go v0.83.0 h1:bAMqZidYkmIsUqe6PtkEPT7Q+vfizScn+jfNA6jwK9c=
+cloud.google.com/go v0.83.0/go.mod h1:Z7MJUsANfY0pYPdw0lbnivPx4/vhy/e2FEkSkF7vAVY=
 cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
 cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE=
 cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc=
@@ -27,6 +28,7 @@ cloud.google.com/go/bigquery v1.5.0/go.mod h1:snEHRnqQbz117VIFhE8bmtwIDY80NLUZUM
 cloud.google.com/go/bigquery v1.7.0/go.mod h1://okPTzCYNXSlb24MZs83e2Do+h+VXtc4gLoIoXIAPc=
 cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM77hZzJN/fQ=
 cloud.google.com/go/bigtable v1.2.0/go.mod h1:JcVAOl45lrTmQfLj7T6TxyMzIN/3FGGcFm+2xVAli2o=
+cloud.google.com/go/bigtable v1.3.0/go.mod h1:z5EyKrPE8OQmeg4h5MNdKvuSnI9CCT49Ki3f23aBzio=
 cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
 cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk=
 cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
@@ -40,46 +42,75 @@ cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RX
 cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
 collectd.org v0.3.0/go.mod h1:A/8DzQBkF6abtvrT2j/AU/4tiBgJWYyh0y/oB/4MlWE=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
-github.com/Azure/azure-sdk-for-go v54.0.0+incompatible h1:Bq3L9LF0DHCexlT0fccwxgrOMfjHx8LGz+d+L7gGQv4=
+github.com/Azure/azure-sdk-for-go v41.3.0+incompatible/go.mod h1:9XXNKU+eRnpl9moKnB4QOLf1HestfXbmab5FXxiDBjc=
-github.com/Azure/azure-sdk-for-go v54.0.0+incompatible/go.mod h1:9XXNKU+eRnpl9moKnB4QOLf1HestfXbmab5FXxiDBjc=
+github.com/Azure/azure-sdk-for-go v55.2.0+incompatible h1:TL2/vJWJEPOrmv97nHcbvjXES0Ntlb9P95hqGA1J2dU=
+github.com/Azure/azure-sdk-for-go v55.2.0+incompatible/go.mod h1:9XXNKU+eRnpl9moKnB4QOLf1HestfXbmab5FXxiDBjc=
 github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 h1:w+iIsaOQNcT7OZ575w+acHgRric5iCyQh+xv+KJ4HB8=
 github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78/go.mod h1:LmzpDX56iTiv29bbRTIsUNlaFfuhWRQBWjQdVyAevI8=
 github.com/Azure/go-autorest v14.2.0+incompatible h1:V5VMDjClD3GiElqLWO7mz2MxNAK/vTfRHdAubSIPRgs=
 github.com/Azure/go-autorest v14.2.0+incompatible/go.mod h1:r+4oMnoxhatjLLJ6zxSWATqVooLgysK6ZNox3g/xq24=
+github.com/Azure/go-autorest/autorest v0.9.0/go.mod h1:xyHB1BMZT0cuDHU7I0+g046+BFDTQ8rEZB0s4Yfa6bI=
+github.com/Azure/go-autorest/autorest v0.9.3/go.mod h1:GsRuLYvwzLjjjRoWEIyMUaYq8GNUx2nRB378IPt/1p0=
+github.com/Azure/go-autorest/autorest v0.10.0/go.mod h1:/FALq9T/kS7b5J5qsQ+RSTUdAmGFqi0vUdVNNx8q630=
+github.com/Azure/go-autorest/autorest v0.10.1/go.mod h1:/FALq9T/kS7b5J5qsQ+RSTUdAmGFqi0vUdVNNx8q630=
 github.com/Azure/go-autorest/autorest v0.11.12/go.mod h1:eipySxLmqSyC5s5k1CLupqet0PSENBEDP93LQ9a8QYw=
-github.com/Azure/go-autorest/autorest v0.11.18 h1:90Y4srNYrwOtAgVo3ndrQkTYn6kf1Eg/AjTFJ8Is2aM=
+github.com/Azure/go-autorest/autorest v0.11.19 h1:7/IqD2fEYVha1EPeaiytVKhzmPV223pfkRIQUGOK2IE=
-github.com/Azure/go-autorest/autorest v0.11.18/go.mod h1:dSiJPy22c3u0OtOKDNttNgqpNFY/GeWa7GH/Pz56QRA=
+github.com/Azure/go-autorest/autorest v0.11.19/go.mod h1:dSiJPy22c3u0OtOKDNttNgqpNFY/GeWa7GH/Pz56QRA=
+github.com/Azure/go-autorest/autorest/adal v0.5.0/go.mod h1:8Z9fGy2MpX0PvDjB1pEgQTmVqjGhiHBW7RJJEciWzS0=
+github.com/Azure/go-autorest/autorest/adal v0.8.0/go.mod h1:Z6vX6WXXuyieHAXwMj0S6HY6e6wcHn37qQMBQlvY3lc=
+github.com/Azure/go-autorest/autorest/adal v0.8.1/go.mod h1:ZjhuQClTqx435SRJ2iMlOxPYt3d2C/T/7TiQCVZSn3Q=
+github.com/Azure/go-autorest/autorest/adal v0.8.2/go.mod h1:ZjhuQClTqx435SRJ2iMlOxPYt3d2C/T/7TiQCVZSn3Q=
+github.com/Azure/go-autorest/autorest/adal v0.8.3/go.mod h1:ZjhuQClTqx435SRJ2iMlOxPYt3d2C/T/7TiQCVZSn3Q=
 github.com/Azure/go-autorest/autorest/adal v0.9.5/go.mod h1:B7KF7jKIeC9Mct5spmyCB/A8CG/sEz1vwIRGv/bbw7A=
-github.com/Azure/go-autorest/autorest/adal v0.9.13 h1:Mp5hbtOePIzM8pJVRa3YLrWWmZtoxRXqUEzCfJt3+/Q=
 github.com/Azure/go-autorest/autorest/adal v0.9.13/go.mod h1:W/MM4U6nLxnIskrw4UwWzlHfGjwUS50aOsc/I3yuU8M=
+github.com/Azure/go-autorest/autorest/adal v0.9.14 h1:G8hexQdV5D4khOXrWG2YuLCFKhWYmWD8bHYaXN5ophk=
+github.com/Azure/go-autorest/autorest/adal v0.9.14/go.mod h1:W/MM4U6nLxnIskrw4UwWzlHfGjwUS50aOsc/I3yuU8M=
+github.com/Azure/go-autorest/autorest/azure/auth v0.4.2/go.mod h1:90gmfKdlmKgfjUpnCEpOJzsUEjrWDSLwHIG73tSXddM=
+github.com/Azure/go-autorest/autorest/azure/cli v0.3.1/go.mod h1:ZG5p860J94/0kI9mNJVoIoLgXcirM2gF5i2kWloofxw=
+github.com/Azure/go-autorest/autorest/date v0.1.0/go.mod h1:plvfp3oPSKwf2DNjlBjWF/7vwR+cUD/ELuzDCXwHUVA=
+github.com/Azure/go-autorest/autorest/date v0.2.0/go.mod h1:vcORJHLJEh643/Ioh9+vPmf1Ij9AEBM5FuBIXLmIy0g=
 github.com/Azure/go-autorest/autorest/date v0.3.0 h1:7gUk1U5M/CQbp9WoqinNzJar+8KY+LPI6wiWrP/myHw=
 github.com/Azure/go-autorest/autorest/date v0.3.0/go.mod h1:BI0uouVdmngYNUzGWeSYnokU+TrmwEsOqdt8Y6sso74=
+github.com/Azure/go-autorest/autorest/mocks v0.1.0/go.mod h1:OTyCOPRA2IgIlWxVYxBee2F5Gr4kF2zd2J5cFRaIDN0=
+github.com/Azure/go-autorest/autorest/mocks v0.2.0/go.mod h1:OTyCOPRA2IgIlWxVYxBee2F5Gr4kF2zd2J5cFRaIDN0=
+github.com/Azure/go-autorest/autorest/mocks v0.3.0/go.mod h1:a8FDP3DYzQ4RYfVAxAN3SVSiiO77gL2j2ronKKP0syM=
 github.com/Azure/go-autorest/autorest/mocks v0.4.1 h1:K0laFcLE6VLTOwNgSxaGbUcLPuGXlNkbVvq4cW4nIHk=
 github.com/Azure/go-autorest/autorest/mocks v0.4.1/go.mod h1:LTp+uSrOhSkaKrUy935gNZuuIPPVsHlr9DSOxSayd+k=
+github.com/Azure/go-autorest/autorest/to v0.3.0/go.mod h1:MgwOyqaIuKdG4TL/2ywSsIWKAfJfgHDo8ObuUk3t5sA=
 github.com/Azure/go-autorest/autorest/to v0.4.0 h1:oXVqrxakqqV1UZdSazDOPOLvOIz+XA683u8EctwboHk=
 github.com/Azure/go-autorest/autorest/to v0.4.0/go.mod h1:fE8iZBn7LQR7zH/9XU2NcPR4o9jEImooCeWJcYV/zLE=
+github.com/Azure/go-autorest/autorest/validation v0.2.0/go.mod h1:3EEqHnBxQGHXRYq3HT1WyXAvT7LLY3tl70hw6tQIbjI=
 github.com/Azure/go-autorest/autorest/validation v0.3.1 h1:AgyqjAd94fwNAoTjl/WQXg4VvFeRFpO+UhNyRXqF1ac=
 github.com/Azure/go-autorest/autorest/validation v0.3.1/go.mod h1:yhLgjC0Wda5DYXl6JAsWyUe4KVNffhoDhG0zVzUMo3E=
+github.com/Azure/go-autorest/logger v0.1.0/go.mod h1:oExouG+K6PryycPJfVSxi/koC6LSNgds39diKLz7Vrc=
 github.com/Azure/go-autorest/logger v0.2.0/go.mod h1:T9E3cAhj2VqvPOtCYAvby9aBXkZmbF5NWuPV8+WeEW8=
 github.com/Azure/go-autorest/logger v0.2.1 h1:IG7i4p/mDa2Ce4TRyAO8IHnVhAVF3RFU+ZtXWSmf4Tg=
 github.com/Azure/go-autorest/logger v0.2.1/go.mod h1:T9E3cAhj2VqvPOtCYAvby9aBXkZmbF5NWuPV8+WeEW8=
+github.com/Azure/go-autorest/tracing v0.5.0/go.mod h1:r/s2XiOKccPW3HrqB+W0TQzfbtp2fGCgRFtBroKn4Dk=
 github.com/Azure/go-autorest/tracing v0.6.0 h1:TYi4+3m5t6K48TGI9AUdb+IzbnSxvnvUMfuitfgcfuo=
 github.com/Azure/go-autorest/tracing v0.6.0/go.mod h1:+vhtPC754Xsa23ID7GlGsrdKBpUA79WCAKPPZVC2DeU=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/DATA-DOG/go-sqlmock v1.3.3/go.mod h1:f/Ixk793poVmq4qj/V1dPUg2JEAKC73Q5eFN3EC/SaM=
+github.com/DATA-DOG/go-sqlmock v1.4.1/go.mod h1:f/Ixk793poVmq4qj/V1dPUg2JEAKC73Q5eFN3EC/SaM=
+github.com/DataDog/datadog-go v3.2.0+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ=
 github.com/HdrHistogram/hdrhistogram-go v1.0.1 h1:GX8GAYDuhlFQnI2fRDHQhTlkHMz8bEn0jTI6LJU0mpw=
 github.com/HdrHistogram/hdrhistogram-go v1.0.1/go.mod h1:BWJ+nMSHY3L41Zj7CA3uXnloDp7xxV0YvstAE7nKTaM=
 github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0=
+github.com/Masterminds/semver v1.4.2/go.mod h1:MB6lktGJrhw8PrUyiEoblNEGEQ+RzHPF078ddwwvV3Y=
+github.com/Masterminds/sprig v2.16.0+incompatible/go.mod h1:y6hNFY5UBTIWBxnzTeuNhlNS5hqE0NB0E6fgfo2Br3o=
 github.com/Microsoft/go-winio v0.4.16 h1:FtSW/jqD+l4ba5iPBj9CODVtgfYAD8w2wS923g/cFDk=
 github.com/Microsoft/go-winio v0.4.16/go.mod h1:XB6nPKklQyQ7GC9LdcBEcBl8PF76WugXOPRXwdLnMv0=
 github.com/NYTimes/gziphandler v0.0.0-20170623195520-56545f4a5d46/go.mod h1:3wb06e3pkSAbeQ52E9H9iFoQsEEwGN64994WTCIhntQ=
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@@ -201,16 +253,19 @@ github.com/fatih/color v1.9.0/go.mod h1:eQcE1qtQxscV5RaZvpXrrb8Drkc3/DdQ+uUYCNjL
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@@ -218,6 +273,8 @@ github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2
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@@ -240,14 +297,17 @@ github.com/go-openapi/errors v0.19.4/go.mod h1:qX0BLWsyaKfvhluLejVpVNwNRdXZhEbTA
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@@ -271,13 +331,16 @@ github.com/go-openapi/runtime v0.19.0/go.mod h1:OwNfisksmmaZse4+gpV3Ne9AyMOlP1lt
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@@ -295,6 +358,7 @@ github.com/go-openapi/strfmt v0.19.11/go.mod h1:UukAYgTaQfqJuAFlNxxMWNvMYiwiXtLs
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@@ -303,8 +367,9 @@ github.com/go-openapi/swag v0.19.7/go.mod h1:ao+8BpOPyKdpQz3AOJfbeEVpLmWAvlT1IfT
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@@ -315,6 +380,8 @@ github.com/go-openapi/validate v0.19.15/go.mod h1:tbn/fdOwYHgrhPBzidZfJC2MIVvs9G
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@@ -347,13 +414,17 @@ github.com/gobuffalo/packr/v2 v2.0.9/go.mod h1:emmyGweYTm6Kdper+iywB6YK5YzuKchGt
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@@ -371,6 +442,7 @@ github.com/golang/mock v1.4.1/go.mod h1:UOMv5ysSaYNkG+OFQykRIcU/QvvxJf3p21QfJ2Bt
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@@ -407,8 +479,9 @@ github.com/google/go-cmp v0.5.1/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
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@@ -539,6 +642,7 @@ github.com/json-iterator/go v1.1.11/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/
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@@ -616,6 +727,7 @@ github.com/mitchellh/gox v0.4.0/go.mod h1:Sd9lOJ0+aimLBi73mGofS1ycjY8lL3uZM3JPS4
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@@ -658,6 +770,7 @@ github.com/olekukonko/tablewriter v0.0.0-20170122224234-a0225b3f23b5/go.mod h1:v
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@@ -749,12 +873,14 @@ github.com/rogpeppe/fastuuid v1.2.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6L
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@@ -780,6 +906,7 @@ github.com/sirupsen/logrus v1.6.0 h1:UBcNElsrwanuuMsnGSlYmtmgbb23qDR5dG+6X6Oo89I
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@@ -809,15 +936,22 @@ github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
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@@ -825,18 +959,20 @@ github.com/xdg/scram v0.0.0-20180814205039-7eeb5667e42c/go.mod h1:lB8K/P019DLNhe
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@@ -855,20 +991,29 @@ go.opencensus.io v0.23.0 h1:gqCw0LfLxScz8irSi8exQc7fyQ0fKQU/qnC/X8+V/1M=
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@@ -878,7 +1023,11 @@ golang.org/x/crypto v0.0.0-20190617133340-57b3e21c3d56/go.mod h1:yigFU9vqHzYiE8U
 golang.org/x/crypto v0.0.0-20190701094942-4def268fd1a4/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20190923035154-9ee001bba392/go.mod h1:/lpIB1dKB+9EgE3H3cr1v9wB50oz8l4C4h62xy7jSTY=
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@@ -911,8 +1060,9 @@ golang.org/x/lint v0.0.0-20190930215403-16217165b5de/go.mod h1:6SW0HCj/g11FgYtHl
 golang.org/x/lint v0.0.0-20191125180803-fdd1cda4f05f/go.mod h1:5qLYkcX4OjUUV8bRuDixDT3tpyyb+LUpUlRWLxfhWrs=
 golang.org/x/lint v0.0.0-20200130185559-910be7a94367/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
 golang.org/x/lint v0.0.0-20200302205851-738671d3881b/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
-golang.org/x/lint v0.0.0-20201208152925-83fdc39ff7b5 h1:2M3HP5CCK1Si9FQhwnzYhXdG6DXeebvUHFpre8QvbyI=
 golang.org/x/lint v0.0.0-20201208152925-83fdc39ff7b5/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
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 golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod h1:z+o9i4GpDbdi3rU15maQ/Ox0txvL9dWGYEHz965HBQE=
 golang.org/x/mobile v0.0.0-20190719004257-d2bd2a29d028/go.mod h1:E/iHnbuqvinMTCcRqshq8CkpyQDoeVncDDYHnLhea+o=
 golang.org/x/mod v0.0.0-20190513183733-4bf6d317e70e/go.mod h1:mXi4GBBbnImb6dmsKGUJ2LatrhH/nqhxcFungHvyanc=
@@ -922,8 +1072,10 @@ golang.org/x/mod v0.1.1-0.20191107180719-034126e5016b/go.mod h1:QqPTAvyqsEbceGzB
 golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.4.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
-golang.org/x/mod v0.4.1 h1:Kvvh58BN8Y9/lBi7hTekvtMpm07eUZ0ck5pRHpsMWrY=
 golang.org/x/mod v0.4.1/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
+golang.org/x/mod v0.4.2 h1:Gz96sIWK3OalVv/I/qNygP42zyoKp3xptRVCWRFEBvo=
+golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
+golang.org/x/net v0.0.0-20170114055629-f2499483f923/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -948,6 +1100,9 @@ golang.org/x/net v0.0.0-20190724013045-ca1201d0de80/go.mod h1:z5CRVTTTmAJ677TzLL
 golang.org/x/net v0.0.0-20190813141303-74dc4d7220e7/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190827160401-ba9fcec4b297/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190923162816-aa69164e4478/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
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+golang.org/x/net v0.0.0-20191004110552-13f9640d40b9/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20191126235420-ef20fe5d7933/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20191209160850-c0dbc17a3553/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200114155413-6afb5195e5aa/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200202094626-16171245cfb2/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
@@ -955,6 +1110,7 @@ golang.org/x/net v0.0.0-20200222125558-5a598a2470a0/go.mod h1:z5CRVTTTmAJ677TzLL
 golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200301022130-244492dfa37a/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
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 golang.org/x/net v0.0.0-20200501053045-e0ff5e5a1de5/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/net v0.0.0-20200506145744-7e3656a0809f/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
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@@ -972,9 +1128,12 @@ golang.org/x/net v0.0.0-20210119194325-5f4716e94777/go.mod h1:m0MpNAwzfU5UDzcl9v
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 golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
@@ -986,8 +1145,8 @@ golang.org/x/oauth2 v0.0.0-20201208152858-08078c50e5b5/go.mod h1:KelEdhl1UZF7XfJ
 golang.org/x/oauth2 v0.0.0-20210218202405-ba52d332ba99/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
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 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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@@ -1001,6 +1160,7 @@ golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20201207232520-09787c993a3a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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@@ -1009,6 +1169,7 @@ golang.org/x/sys v0.0.0-20181026203630-95b1ffbd15a5/go.mod h1:STP8DvDyc/dI5b8T5h
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@@ -1030,7 +1191,9 @@ golang.org/x/sys v0.0.0-20190922100055-0a153f010e69/go.mod h1:h1NjWce9XRLGQEsW7w
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@@ -1068,14 +1231,20 @@ golang.org/x/sys v0.0.0-20210305230114-8fe3ee5dd75b/go.mod h1:h1NjWce9XRLGQEsW7w
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@@ -1117,6 +1289,7 @@ golang.org/x/tools v0.0.0-20190617190820-da514acc4774/go.mod h1:/rFqwRUd4F7ZHNgw
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@@ -1129,6 +1302,8 @@ golang.org/x/tools v0.0.0-20191115202509-3a792d9c32b2/go.mod h1:b+2E5dAYhXwXZwtn
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@@ -1141,15 +1316,17 @@ golang.org/x/tools v0.0.0-20200207183749-b753a1ba74fa/go.mod h1:TB2adYChydJhpapK
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@@ -1157,8 +1334,11 @@ golang.org/x/tools v0.0.0-20201201161351-ac6f37ff4c2a/go.mod h1:emZCQorbCU4vsT4f
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@@ -1190,8 +1370,9 @@ google.golang.org/api v0.36.0/go.mod h1:+z5ficQTmoYpPn8LCUNVpK5I7hwkpjbcgqA7I34q
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@@ -1211,6 +1392,7 @@ google.golang.org/genproto v0.0.0-20190716160619-c506a9f90610/go.mod h1:DMBHOl98
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@@ -1225,6 +1407,7 @@ google.golang.org/genproto v0.0.0-20200228133532-8c2c7df3a383/go.mod h1:55QSHmfG
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@@ -1242,8 +1425,10 @@ google.golang.org/genproto v0.0.0-20210303154014-9728d6b83eeb/go.mod h1:FWY/as6D
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@@ -1253,11 +1438,13 @@ google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ij
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 google.golang.org/grpc v1.31.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
 google.golang.org/grpc v1.31.1/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
@@ -1267,8 +1454,11 @@ google.golang.org/grpc v1.34.0/go.mod h1:WotjhfgOW/POjDeRt8vscBtXq+2VjORFy659qA5
 google.golang.org/grpc v1.35.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
 google.golang.org/grpc v1.36.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
 google.golang.org/grpc v1.36.1/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
-google.golang.org/grpc v1.37.0 h1:uSZWeQJX5j11bIQ4AJoj+McDBo29cY1MCoC1wO3ts+c=
 google.golang.org/grpc v1.37.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
+google.golang.org/grpc v1.37.1/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
+google.golang.org/grpc v1.38.0 h1:/9BgsAsa5nWe26HqOlvlgJnqBuktYOLCgjCPqsa56W0=
+google.golang.org/grpc v1.38.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
+google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.1.0/go.mod h1:6Kw0yEErY5E/yWrBtf03jp27GLLJujG4z/JK95pnjjw=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
@@ -1308,6 +1498,7 @@ gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.7/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
@@ -1328,21 +1519,29 @@ honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWh
 honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
 honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
 honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
-k8s.io/api v0.21.0 h1:gu5iGF4V6tfVCQ/R+8Hc0h7H1JuEhzyEi9S4R5LM8+Y=
+k8s.io/api v0.17.5/go.mod h1:0zV5/ungglgy2Rlm3QK8fbxkXVs+BSJWpJP/+8gUVLY=
-k8s.io/api v0.21.0/go.mod h1:+YbrhBBGgsxbF6o6Kj4KJPJnBmAKuXDeS3E18bgHNVU=
+k8s.io/api v0.21.1 h1:94bbZ5NTjdINJEdzOkpS4vdPhkb1VFpTYC9zh43f75c=
-k8s.io/apimachinery v0.21.0 h1:3Fx+41if+IRavNcKOz09FwEXDBG6ORh6iMsTSelhkMA=
+k8s.io/api v0.21.1/go.mod h1:FstGROTmsSHBarKc8bylzXih8BLNYTiS3TZcsoEDg2s=
-k8s.io/apimachinery v0.21.0/go.mod h1:jbreFvJo3ov9rj7eWT7+sYiRx+qZuCYXwWT1bcDswPY=
+k8s.io/apimachinery v0.17.5/go.mod h1:ioIo1G/a+uONV7Tv+ZmCbMG1/a3kVw5YcDdncd8ugQ0=
-k8s.io/client-go v0.21.0 h1:n0zzzJsAQmJngpC0IhgFcApZyoGXPrDIAD601HD09ag=
+k8s.io/apimachinery v0.21.1 h1:Q6XuHGlj2xc+hlMCvqyYfbv3H7SRGn2c8NycxJquDVs=
-k8s.io/client-go v0.21.0/go.mod h1:nNBytTF9qPFDEhoqgEPaarobC8QPae13bElIVHzIglA=
+k8s.io/apimachinery v0.21.1/go.mod h1:jbreFvJo3ov9rj7eWT7+sYiRx+qZuCYXwWT1bcDswPY=
+k8s.io/client-go v0.17.5/go.mod h1:S8uZpBpjJJdEH/fEyxcqg7Rn0P5jH+ilkgBHjriSmNo=
+k8s.io/client-go v0.21.1 h1:bhblWYLZKUu+pm50plvQF8WpY6TXdRRtcS/K9WauOj4=
+k8s.io/client-go v0.21.1/go.mod h1:/kEw4RgW+3xnBGzvp9IWxKSNA+lXn3A7AuH3gdOAzLs=
+k8s.io/gengo v0.0.0-20190128074634-0689ccc1d7d6/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=
 k8s.io/gengo v0.0.0-20200413195148-3a45101e95ac/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=
+k8s.io/kube-openapi v0.0.0-20200316234421-82d701f24f9d/go.mod h1:F+5wygcW0wmRTnM3cOgIqGivxkwSWIWT5YdsDbeAOaU=
 k8s.io/kube-openapi v0.0.0-20210305001622-591a79e4bda7 h1:vEx13qjvaZ4yfObSSXW7BrMc/KQBBT/Jyee8XtLf4x0=
 k8s.io/kube-openapi v0.0.0-20210305001622-591a79e4bda7/go.mod h1:wXW5VT87nVfh/iLV8FpR2uDvrFyomxbtb1KivDbvPTE=
+k8s.io/utils v0.0.0-20191114184206-e782cd3c129f/go.mod h1:sZAwmy6armz5eXlNoLmJcl4F1QuKu7sr+mFQ0byX7Ew=
+k8s.io/utils v0.0.0-20200414100711-2df71ebbae66/go.mod h1:jPW/WVKK9YHAvNhRxK0md/EJ228hCsBRufyofKtW8HA=
 k8s.io/utils v0.0.0-20201110183641-67b214c5f920 h1:CbnUZsM497iRC5QMVkHwyl8s2tB3g7yaSHkYPkpgelw=
 k8s.io/utils v0.0.0-20201110183641-67b214c5f920/go.mod h1:jPW/WVKK9YHAvNhRxK0md/EJ228hCsBRufyofKtW8HA=
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
 rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=
 rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
 rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
+sigs.k8s.io/structured-merge-diff/v2 v2.0.1/go.mod h1:Wb7vfKAodbKgf6tn1Kl0VvGj7mRH6DGaRcixXEJXTsE=
 sigs.k8s.io/structured-merge-diff/v4 v4.0.2/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=
 sigs.k8s.io/structured-merge-diff/v4 v4.1.0 h1:C4r9BgJ98vrKnnVCjwCSXcWjWe0NKcUQkmzDXZXGwH8=
 sigs.k8s.io/structured-merge-diff/v4 v4.1.0/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=

notifier/notifier.go

@@ -28,8 +28,8 @@ import (
 	"sync"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 	"github.com/go-openapi/strfmt"
 	"github.com/pkg/errors"
 	"github.com/prometheus/alertmanager/api/v2/models"

pkg/logging/dedupe.go

@@ -18,7 +18,7 @@ import (
 	"sync"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/go-logfmt/logfmt"
 )
 

pkg/logging/file.go

@@ -17,7 +17,7 @@ import (
 	"os"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/pkg/errors"
 )
 

pkg/logging/ratelimit.go

@@ -14,7 +14,7 @@
 package logging
 
 import (
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"golang.org/x/time/rate"
 )
 

pkg/rulefmt/rulefmt.go

@@ -223,10 +223,11 @@ func testTemplateParsing(rl *RuleNode) (errs []error) {
 	}
 
 	// Trying to parse templates.
-	tmplData := template.AlertTemplateData(map[string]string{}, map[string]string{}, 0)
+	tmplData := template.AlertTemplateData(map[string]string{}, map[string]string{}, "", 0)
 	defs := []string{
 		"{{$labels := .Labels}}",
 		"{{$externalLabels := .ExternalLabels}}",
+		"{{$externalURL := .ExternalURL}}",
 		"{{$value := .Value}}",
 	}
 	parseTest := func(text string) error {

promql/engine.go

@@ -27,8 +27,8 @@ import (
 	"sync"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 	"github.com/opentracing/opentracing-go"
 	"github.com/pkg/errors"
 	"github.com/prometheus/client_golang/prometheus"

promql/engine_test.go

@@ -22,7 +22,7 @@ import (
 	"testing"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/stretchr/testify/require"
 	"go.uber.org/goleak"
 

promql/query_logger.go

@@ -23,8 +23,8 @@ import (
 	"unicode/utf8"
 
 	"github.com/edsrzf/mmap-go"
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 )
 
 type ActiveQueryTracker struct {

rules/alerting.go

@@ -22,8 +22,8 @@ import (
 	"sync"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 	"github.com/pkg/errors"
 	"github.com/prometheus/common/model"
 	yaml "gopkg.in/yaml.v2"
@@ -121,6 +121,8 @@ type AlertingRule struct {
 	annotations labels.Labels
 	// External labels from the global config.
 	externalLabels map[string]string
+	// The external URL from the --web.external-url flag.
+	externalURL string
 	// true if old state has been restored. We start persisting samples for ALERT_FOR_STATE
 	// only after the restoration.
 	restored bool
@@ -144,7 +146,7 @@ type AlertingRule struct {
 // NewAlertingRule constructs a new AlertingRule.
 func NewAlertingRule(
 	name string, vec parser.Expr, hold time.Duration,
-	labels, annotations, externalLabels labels.Labels,
+	labels, annotations, externalLabels labels.Labels, externalURL string,
 	restored bool, logger log.Logger,
 ) *AlertingRule {
 	el := make(map[string]string, len(externalLabels))
@@ -159,6 +161,7 @@ func NewAlertingRule(
 		labels:         labels,
 		annotations:    annotations,
 		externalLabels: el,
+		externalURL:    externalURL,
 		health:         HealthUnknown,
 		active:         map[uint64]*Alert{},
 		logger:         logger,
@@ -318,12 +321,13 @@ func (r *AlertingRule) Eval(ctx context.Context, ts time.Time, query QueryFunc,
 			l[lbl.Name] = lbl.Value
 		}
 
-		tmplData := template.AlertTemplateData(l, r.externalLabels, smpl.V)
+		tmplData := template.AlertTemplateData(l, r.externalLabels, r.externalURL, smpl.V)
 		// Inject some convenience variables that are easier to remember for users
 		// who are not used to Go's templating system.
 		defs := []string{
 			"{{$labels := .Labels}}",
 			"{{$externalLabels := .ExternalLabels}}",
+			"{{$externalURL := .ExternalURL}}",
 			"{{$value := .Value}}",
 		}
 

rules/alerting_test.go

@@ -19,7 +19,7 @@ import (
 	"testing"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/stretchr/testify/require"
 
 	"github.com/prometheus/prometheus/pkg/labels"
@@ -32,7 +32,7 @@ import (
 func TestAlertingRuleHTMLSnippet(t *testing.T) {
 	expr, err := parser.ParseExpr(`foo{html="<b>BOLD<b>"}`)
 	require.NoError(t, err)
-	rule := NewAlertingRule("testrule", expr, 0, labels.FromStrings("html", "<b>BOLD</b>"), labels.FromStrings("html", "<b>BOLD</b>"), nil, false, nil)
+	rule := NewAlertingRule("testrule", expr, 0, labels.FromStrings("html", "<b>BOLD</b>"), labels.FromStrings("html", "<b>BOLD</b>"), nil, "", false, nil)
 
 	const want = template.HTML(`alert: <a href="/test/prefix/graph?g0.expr=ALERTS%7Balertname%3D%22testrule%22%7D&g0.tab=1">testrule</a>
 expr: <a href="/test/prefix/graph?g0.expr=foo%7Bhtml%3D%22%3Cb%3EBOLD%3Cb%3E%22%7D&g0.tab=1">foo{html=&#34;&lt;b&gt;BOLD&lt;b&gt;&#34;}</a>
@@ -79,7 +79,7 @@ func TestAlertingRuleState(t *testing.T) {
 	}
 
 	for i, test := range tests {
-		rule := NewAlertingRule(test.name, nil, 0, nil, nil, nil, true, nil)
+		rule := NewAlertingRule(test.name, nil, 0, nil, nil, nil, "", true, nil)
 		rule.active = test.active
 		got := rule.State()
 		require.Equal(t, test.want, got, "test case %d unexpected AlertState, want:%d got:%d", i, test.want, got)
@@ -107,7 +107,7 @@ func TestAlertingRuleLabelsUpdate(t *testing.T) {
 		// If an alert is going back and forth between two label values it will never fire.
 		// Instead, you should write two alerts with constant labels.
 		labels.FromStrings("severity", "{{ if lt $value 80.0 }}critical{{ else }}warning{{ end }}"),
-		nil, nil, true, nil,
+		nil, nil, "", true, nil,
 	)
 
 	results := []promql.Vector{
@@ -208,6 +208,7 @@ func TestAlertingRuleExternalLabelsInTemplate(t *testing.T) {
 		labels.FromStrings("templated_label", "There are {{ len $externalLabels }} external Labels, of which foo is {{ $externalLabels.foo }}."),
 		nil,
 		nil,
+		"",
 		true, log.NewNopLogger(),
 	)
 	ruleWithExternalLabels := NewAlertingRule(
@@ -217,6 +218,7 @@ func TestAlertingRuleExternalLabelsInTemplate(t *testing.T) {
 		labels.FromStrings("templated_label", "There are {{ len $externalLabels }} external Labels, of which foo is {{ $externalLabels.foo }}."),
 		nil,
 		labels.FromStrings("foo", "bar", "dings", "bums"),
+		"",
 		true, log.NewNopLogger(),
 	)
 	result := promql.Vector{
@@ -280,6 +282,100 @@ func TestAlertingRuleExternalLabelsInTemplate(t *testing.T) {
 	require.Equal(t, result, filteredRes)
 }
 
+func TestAlertingRuleExternalURLInTemplate(t *testing.T) {
+	suite, err := promql.NewTest(t, `
+		load 1m
+			http_requests{job="app-server", instance="0"}	75 85 70 70
+	`)
+	require.NoError(t, err)
+	defer suite.Close()
+
+	require.NoError(t, suite.Run())
+
+	expr, err := parser.ParseExpr(`http_requests < 100`)
+	require.NoError(t, err)
+
+	ruleWithoutExternalURL := NewAlertingRule(
+		"ExternalURLDoesNotExist",
+		expr,
+		time.Minute,
+		labels.FromStrings("templated_label", "The external URL is {{ $externalURL }}."),
+		nil,
+		nil,
+		"",
+		true, log.NewNopLogger(),
+	)
+	ruleWithExternalURL := NewAlertingRule(
+		"ExternalURLExists",
+		expr,
+		time.Minute,
+		labels.FromStrings("templated_label", "The external URL is {{ $externalURL }}."),
+		nil,
+		nil,
+		"http://localhost:1234",
+		true, log.NewNopLogger(),
+	)
+	result := promql.Vector{
+		{
+			Metric: labels.FromStrings(
+				"__name__", "ALERTS",
+				"alertname", "ExternalURLDoesNotExist",
+				"alertstate", "pending",
+				"instance", "0",
+				"job", "app-server",
+				"templated_label", "The external URL is .",
+			),
+			Point: promql.Point{V: 1},
+		},
+		{
+			Metric: labels.FromStrings(
+				"__name__", "ALERTS",
+				"alertname", "ExternalURLExists",
+				"alertstate", "pending",
+				"instance", "0",
+				"job", "app-server",
+				"templated_label", "The external URL is http://localhost:1234.",
+			),
+			Point: promql.Point{V: 1},
+		},
+	}
+
+	evalTime := time.Unix(0, 0)
+	result[0].Point.T = timestamp.FromTime(evalTime)
+	result[1].Point.T = timestamp.FromTime(evalTime)
+
+	var filteredRes promql.Vector // After removing 'ALERTS_FOR_STATE' samples.
+	res, err := ruleWithoutExternalURL.Eval(
+		suite.Context(), evalTime, EngineQueryFunc(suite.QueryEngine(), suite.Storage()), nil,
+	)
+	require.NoError(t, err)
+	for _, smpl := range res {
+		smplName := smpl.Metric.Get("__name__")
+		if smplName == "ALERTS" {
+			filteredRes = append(filteredRes, smpl)
+		} else {
+			// If not 'ALERTS', it has to be 'ALERTS_FOR_STATE'.
+			require.Equal(t, "ALERTS_FOR_STATE", smplName)
+		}
+	}
+
+	res, err = ruleWithExternalURL.Eval(
+		suite.Context(), evalTime, EngineQueryFunc(suite.QueryEngine(), suite.Storage()), nil,
+	)
+	require.NoError(t, err)
+	for _, smpl := range res {
+		smplName := smpl.Metric.Get("__name__")
+		if smplName == "ALERTS" {
+			filteredRes = append(filteredRes, smpl)
+		} else {
+			// If not 'ALERTS', it has to be 'ALERTS_FOR_STATE'.
+			require.Equal(t, "ALERTS_FOR_STATE", smplName)
+		}
+	}
+
+	require.Equal(t, result, filteredRes)
+}
+
 func TestAlertingRuleEmptyLabelFromTemplate(t *testing.T) {
 	suite, err := promql.NewTest(t, `
 		load 1m
@@ -300,6 +396,7 @@ func TestAlertingRuleEmptyLabelFromTemplate(t *testing.T) {
 		labels.FromStrings("empty_label", ""),
 		nil,
 		nil,
+		"",
 		true, log.NewNopLogger(),
 	)
 	result := promql.Vector{
@@ -360,6 +457,7 @@ func TestAlertingRuleDuplicate(t *testing.T) {
 		labels.FromStrings("test", "test"),
 		nil,
 		nil,
+		"",
 		true, log.NewNopLogger(),
 	)
 	_, err := rule.Eval(ctx, now, EngineQueryFunc(engine, storage), nil)

rules/manager.go

@@ -22,8 +22,8 @@ import (
 	"sync"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 	opentracing "github.com/opentracing/opentracing-go"
 	"github.com/pkg/errors"
 	"github.com/prometheus/client_golang/prometheus"
@@ -946,11 +946,11 @@ func (m *Manager) Stop() {
 
 // Update the rule manager's state as the config requires. If
 // loading the new rules failed the old rule set is restored.
-func (m *Manager) Update(interval time.Duration, files []string, externalLabels labels.Labels) error {
+func (m *Manager) Update(interval time.Duration, files []string, externalLabels labels.Labels, externalURL string) error {
 	m.mtx.Lock()
 	defer m.mtx.Unlock()
 
-	groups, errs := m.LoadGroups(interval, externalLabels, files...)
+	groups, errs := m.LoadGroups(interval, externalLabels, externalURL, files...)
 	if errs != nil {
 		for _, e := range errs {
 			level.Error(m.logger).Log("msg", "loading groups failed", "err", e)
@@ -1034,7 +1034,7 @@ func (FileLoader) Parse(query string) (parser.Expr, error) { return parser.Parse
 
 // LoadGroups reads groups from a list of files.
 func (m *Manager) LoadGroups(
-	interval time.Duration, externalLabels labels.Labels, filenames ...string,
+	interval time.Duration, externalLabels labels.Labels, externalURL string, filenames ...string,
 ) (map[string]*Group, []error) {
 	groups := make(map[string]*Group)
 
@@ -1067,6 +1067,7 @@ func (m *Manager) LoadGroups(
 						labels.FromMap(r.Labels),
 						labels.FromMap(r.Annotations),
 						externalLabels,
+						externalURL,
 						m.restored,
 						log.With(m.logger, "alert", r.Alert),
 					))

rules/manager_test.go

@@ -23,7 +23,7 @@ import (
 	"testing"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/common/model"
 	"github.com/stretchr/testify/require"
@@ -64,7 +64,7 @@ func TestAlertingRule(t *testing.T) {
 		expr,
 		time.Minute,
 		labels.FromStrings("severity", "{{\"c\"}}ritical"),
-		nil, nil, true, nil,
+		nil, nil, "", true, nil,
 	)
 	result := promql.Vector{
 		{
@@ -205,7 +205,7 @@ func TestForStateAddSamples(t *testing.T) {
 		expr,
 		time.Minute,
 		labels.FromStrings("severity", "{{\"c\"}}ritical"),
-		nil, nil, true, nil,
+		nil, nil, "", true, nil,
 	)
 	result := promql.Vector{
 		{
@@ -379,7 +379,7 @@ func TestForStateRestore(t *testing.T) {
 		expr,
 		alertForDuration,
 		labels.FromStrings("severity", "critical"),
-		nil, nil, true, nil,
+		nil, nil, "", true, nil,
 	)
 
 	group := NewGroup(GroupOptions{
@@ -445,7 +445,7 @@ func TestForStateRestore(t *testing.T) {
 			expr,
 			alertForDuration,
 			labels.FromStrings("severity", "critical"),
-			nil, nil, false, nil,
+			nil, nil, "", false, nil,
 		)
 		newGroup := NewGroup(GroupOptions{
 			Name:          "default",
@@ -609,13 +609,13 @@ func readSeriesSet(ss storage.SeriesSet) (map[string][]promql.Point, error) {
 func TestCopyState(t *testing.T) {
 	oldGroup := &Group{
 		rules: []Rule{
-			NewAlertingRule("alert", nil, 0, nil, nil, nil, true, nil),
+			NewAlertingRule("alert", nil, 0, nil, nil, nil, "", true, nil),
 			NewRecordingRule("rule1", nil, nil),
 			NewRecordingRule("rule2", nil, nil),
 			NewRecordingRule("rule3", nil, labels.Labels{{Name: "l1", Value: "v1"}}),
 			NewRecordingRule("rule3", nil, labels.Labels{{Name: "l1", Value: "v2"}}),
 			NewRecordingRule("rule3", nil, labels.Labels{{Name: "l1", Value: "v3"}}),
-			NewAlertingRule("alert2", nil, 0, labels.Labels{{Name: "l2", Value: "v1"}}, nil, nil, true, nil),
+			NewAlertingRule("alert2", nil, 0, labels.Labels{{Name: "l2", Value: "v1"}}, nil, nil, "", true, nil),
 		},
 		seriesInPreviousEval: []map[string]labels.Labels{
 			{},
@@ -634,10 +634,10 @@ func TestCopyState(t *testing.T) {
 			NewRecordingRule("rule3", nil, labels.Labels{{Name: "l1", Value: "v0"}}),
 			NewRecordingRule("rule3", nil, labels.Labels{{Name: "l1", Value: "v1"}}),
 			NewRecordingRule("rule3", nil, labels.Labels{{Name: "l1", Value: "v2"}}),
-			NewAlertingRule("alert", nil, 0, nil, nil, nil, true, nil),
+			NewAlertingRule("alert", nil, 0, nil, nil, nil, "", true, nil),
 			NewRecordingRule("rule1", nil, nil),
-			NewAlertingRule("alert2", nil, 0, labels.Labels{{Name: "l2", Value: "v0"}}, nil, nil, true, nil),
+			NewAlertingRule("alert2", nil, 0, labels.Labels{{Name: "l2", Value: "v0"}}, nil, nil, "", true, nil),
-			NewAlertingRule("alert2", nil, 0, labels.Labels{{Name: "l2", Value: "v1"}}, nil, nil, true, nil),
+			NewAlertingRule("alert2", nil, 0, labels.Labels{{Name: "l2", Value: "v1"}}, nil, nil, "", true, nil),
 			NewRecordingRule("rule4", nil, nil),
 		},
 		seriesInPreviousEval: make([]map[string]labels.Labels, 8),
@@ -725,7 +725,7 @@ func TestUpdate(t *testing.T) {
 	ruleManager.start()
 	defer ruleManager.Stop()
 
-	err := ruleManager.Update(10*time.Second, files, nil)
+	err := ruleManager.Update(10*time.Second, files, nil, "")
 	require.NoError(t, err)
 	require.Greater(t, len(ruleManager.groups), 0, "expected non-empty rule groups")
 	ogs := map[string]*Group{}
@@ -736,7 +736,7 @@ func TestUpdate(t *testing.T) {
 		ogs[h] = g
 	}
 
-	err = ruleManager.Update(10*time.Second, files, nil)
+	err = ruleManager.Update(10*time.Second, files, nil, "")
 	require.NoError(t, err)
 	for h, g := range ruleManager.groups {
 		for _, actual := range g.seriesInPreviousEval {
@@ -755,7 +755,7 @@ func TestUpdate(t *testing.T) {
 	defer os.Remove(tmpFile.Name())
 	defer tmpFile.Close()
 
-	err = ruleManager.Update(10*time.Second, []string{tmpFile.Name()}, nil)
+	err = ruleManager.Update(10*time.Second, []string{tmpFile.Name()}, nil, "")
 	require.NoError(t, err)
 
 	for h, g := range ruleManager.groups {
@@ -826,7 +826,7 @@ func reloadAndValidate(rgs *rulefmt.RuleGroups, t *testing.T, tmpFile *os.File,
 	tmpFile.Seek(0, 0)
 	_, err = tmpFile.Write(bs)
 	require.NoError(t, err)
-	err = ruleManager.Update(10*time.Second, []string{tmpFile.Name()}, nil)
+	err = ruleManager.Update(10*time.Second, []string{tmpFile.Name()}, nil, "")
 	require.NoError(t, err)
 	for h, g := range ruleManager.groups {
 		if ogs[h] == g {
@@ -862,7 +862,7 @@ func TestNotify(t *testing.T) {
 
 	expr, err := parser.ParseExpr("a > 1")
 	require.NoError(t, err)
-	rule := NewAlertingRule("aTooHigh", expr, 0, labels.Labels{}, labels.Labels{}, nil, true, log.NewNopLogger())
+	rule := NewAlertingRule("aTooHigh", expr, 0, labels.Labels{}, labels.Labels{}, nil, "", true, log.NewNopLogger())
 	group := NewGroup(GroupOptions{
 		Name:          "alert",
 		Interval:      time.Second,
@@ -971,7 +971,7 @@ func TestMetricsUpdate(t *testing.T) {
 	}
 
 	for i, c := range cases {
-		err := ruleManager.Update(time.Second, c.files, nil)
+		err := ruleManager.Update(time.Second, c.files, nil, "")
 		require.NoError(t, err)
 		time.Sleep(2 * time.Second)
 		require.Equal(t, c.metrics, countMetrics(), "test %d: invalid count of metrics", i)
@@ -1045,7 +1045,7 @@ func TestGroupStalenessOnRemoval(t *testing.T) {
 
 	var totalStaleNaN int
 	for i, c := range cases {
-		err := ruleManager.Update(time.Second, c.files, nil)
+		err := ruleManager.Update(time.Second, c.files, nil, "")
 		require.NoError(t, err)
 		time.Sleep(3 * time.Second)
 		totalStaleNaN += c.staleNaN
@@ -1087,11 +1087,11 @@ func TestMetricsStalenessOnManagerShutdown(t *testing.T) {
 		}
 	}()
 
-	err := ruleManager.Update(2*time.Second, files, nil)
+	err := ruleManager.Update(2*time.Second, files, nil, "")
 	time.Sleep(4 * time.Second)
 	require.NoError(t, err)
 	start := time.Now()
-	err = ruleManager.Update(3*time.Second, files[:0], nil)
+	err = ruleManager.Update(3*time.Second, files[:0], nil, "")
 	require.NoError(t, err)
 	ruleManager.Stop()
 	stopped = true
@@ -1134,7 +1134,7 @@ func TestGroupHasAlertingRules(t *testing.T) {
 			group: &Group{
 				name: "HasAlertingRule",
 				rules: []Rule{
-					NewAlertingRule("alert", nil, 0, nil, nil, nil, true, nil),
+					NewAlertingRule("alert", nil, 0, nil, nil, nil, "", true, nil),
 					NewRecordingRule("record", nil, nil),
 				},
 			},

scrape/manager.go

@@ -23,8 +23,8 @@ import (
 	"sync"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 	"github.com/pkg/errors"
 	"github.com/prometheus/client_golang/prometheus"
 

scrape/scrape.go

@@ -28,8 +28,8 @@ import (
 	"time"
 	"unsafe"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
-	"github.com/go-kit/kit/log/level"
+	"github.com/go-kit/log/level"
 	"github.com/pkg/errors"
 	"github.com/prometheus/client_golang/prometheus"
 	config_util "github.com/prometheus/common/config"
@@ -134,6 +134,12 @@ var (
 		},
 		[]string{"scrape_job"},
 	)
+	targetScrapeExceededBodySizeLimit = prometheus.NewCounter(
+		prometheus.CounterOpts{
+			Name: "prometheus_target_scrapes_exceeded_body_size_limit_total",
+			Help: "Total number of scrapes that hit the body size limit",
+		},
+	)
 	targetScrapeSampleLimit = prometheus.NewCounter(
 		prometheus.CounterOpts{
 			Name: "prometheus_target_scrapes_exceeded_sample_limit_total",
@@ -176,6 +182,13 @@ var (
 			Help: "Total number of times scrape pools hit the label limits, during sync or config reload.",
 		},
 	)
+	targetSyncFailed = prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Name: "prometheus_target_sync_failed_total",
+			Help: "Total number of target sync failures.",
+		},
+		[]string{"scrape_job"},
+	)
 )
 
 func init() {
@@ -188,6 +201,7 @@ func init() {
 		targetScrapePoolReloadsFailed,
 		targetSyncIntervalLength,
 		targetScrapePoolSyncsCounter,
+		targetScrapeExceededBodySizeLimit,
 		targetScrapeSampleLimit,
 		targetScrapeSampleDuplicate,
 		targetScrapeSampleOutOfOrder,
@@ -199,6 +213,7 @@ func init() {
 		targetMetadataCache,
 		targetScrapeExemplarOutOfOrder,
 		targetScrapePoolExceededLabelLimits,
+		targetSyncFailed,
 	)
 }
 
@@ -346,6 +361,7 @@ func (sp *scrapePool) stop() {
 		targetScrapePoolTargetLimit.DeleteLabelValues(sp.config.JobName)
 		targetScrapePoolTargetsAdded.DeleteLabelValues(sp.config.JobName)
 		targetSyncIntervalLength.DeleteLabelValues(sp.config.JobName)
+		targetSyncFailed.DeleteLabelValues(sp.config.JobName)
 	}
 }
 
@@ -372,11 +388,12 @@ func (sp *scrapePool) reload(cfg *config.ScrapeConfig) error {
 	targetScrapePoolTargetLimit.WithLabelValues(sp.config.JobName).Set(float64(sp.config.TargetLimit))
 
 	var (
-		wg          sync.WaitGroup
+		wg            sync.WaitGroup
-		interval    = time.Duration(sp.config.ScrapeInterval)
+		interval      = time.Duration(sp.config.ScrapeInterval)
-		timeout     = time.Duration(sp.config.ScrapeTimeout)
+		timeout       = time.Duration(sp.config.ScrapeTimeout)
-		sampleLimit = int(sp.config.SampleLimit)
+		bodySizeLimit = int64(sp.config.BodySizeLimit)
-		labelLimits = &labelLimits{
+		sampleLimit   = int(sp.config.SampleLimit)
+		labelLimits   = &labelLimits{
 			labelLimit:            int(sp.config.LabelLimit),
 			labelNameLengthLimit:  int(sp.config.LabelNameLengthLimit),
 			labelValueLengthLimit: int(sp.config.LabelValueLengthLimit),
@@ -399,7 +416,7 @@ func (sp *scrapePool) reload(cfg *config.ScrapeConfig) error {
 		}
 		var (
 			t       = sp.activeTargets[fp]
-			s       = &targetScraper{Target: t, client: sp.client, timeout: timeout}
+			s       = &targetScraper{Target: t, client: sp.client, timeout: timeout, bodySizeLimit: bodySizeLimit}
 			newLoop = sp.newLoop(scrapeLoopOptions{
 				target:          t,
 				scraper:         s,
@@ -445,11 +462,11 @@ func (sp *scrapePool) Sync(tgs []*targetgroup.Group) {
 	var all []*Target
 	sp.droppedTargets = []*Target{}
 	for _, tg := range tgs {
-		targets, err := targetsFromGroup(tg, sp.config)
+		targets, failures := targetsFromGroup(tg, sp.config)
-		if err != nil {
+		for _, err := range failures {
-			level.Error(sp.logger).Log("msg", "creating targets failed", "err", err)
+			level.Error(sp.logger).Log("msg", "Creating target failed", "err", err)
-			continue
 		}
+		targetSyncFailed.WithLabelValues(sp.config.JobName).Add(float64(len(failures)))
 		for _, t := range targets {
 			if t.Labels().Len() > 0 {
 				all = append(all, t)
@@ -472,11 +489,12 @@ func (sp *scrapePool) Sync(tgs []*targetgroup.Group) {
 // It returns after all stopped scrape loops terminated.
 func (sp *scrapePool) sync(targets []*Target) {
 	var (
-		uniqueLoops = make(map[uint64]loop)
+		uniqueLoops   = make(map[uint64]loop)
-		interval    = time.Duration(sp.config.ScrapeInterval)
+		interval      = time.Duration(sp.config.ScrapeInterval)
-		timeout     = time.Duration(sp.config.ScrapeTimeout)
+		timeout       = time.Duration(sp.config.ScrapeTimeout)
-		sampleLimit = int(sp.config.SampleLimit)
+		bodySizeLimit = int64(sp.config.BodySizeLimit)
-		labelLimits = &labelLimits{
+		sampleLimit   = int(sp.config.SampleLimit)
+		labelLimits   = &labelLimits{
 			labelLimit:            int(sp.config.LabelLimit),
 			labelNameLengthLimit:  int(sp.config.LabelNameLengthLimit),
 			labelValueLengthLimit: int(sp.config.LabelValueLengthLimit),
@@ -491,7 +509,7 @@ func (sp *scrapePool) sync(targets []*Target) {
 		hash := t.hash()
 
 		if _, ok := sp.activeTargets[hash]; !ok {
-			s := &targetScraper{Target: t, client: sp.client, timeout: timeout}
+			s := &targetScraper{Target: t, client: sp.client, timeout: timeout, bodySizeLimit: bodySizeLimit}
 			l := sp.newLoop(scrapeLoopOptions{
 				target:          t,
 				scraper:         s,
@@ -681,8 +699,12 @@ type targetScraper struct {
 
 	gzipr *gzip.Reader
 	buf   *bufio.Reader
+
+	bodySizeLimit int64
 }
 
+var errBodySizeLimit = errors.New("body size limit exceeded")
+
 const acceptHeader = `application/openmetrics-text; version=0.0.1,text/plain;version=0.0.4;q=0.5,*/*;q=0.1`
 
 var userAgentHeader = fmt.Sprintf("Prometheus/%s", version.Version)
@@ -714,11 +736,18 @@ func (s *targetScraper) scrape(ctx context.Context, w io.Writer) (string, error)
 		return "", errors.Errorf("server returned HTTP status %s", resp.Status)
 	}
 
+	if s.bodySizeLimit <= 0 {
+		s.bodySizeLimit = math.MaxInt64
+	}
 	if resp.Header.Get("Content-Encoding") != "gzip" {
-		_, err = io.Copy(w, resp.Body)
+		n, err := io.Copy(w, io.LimitReader(resp.Body, s.bodySizeLimit))
 		if err != nil {
 			return "", err
 		}
+		if n >= s.bodySizeLimit {
+			targetScrapeExceededBodySizeLimit.Inc()
+			return "", errBodySizeLimit
+		}
 		return resp.Header.Get("Content-Type"), nil
 	}
 
@@ -735,11 +764,15 @@ func (s *targetScraper) scrape(ctx context.Context, w io.Writer) (string, error)
 		}
 	}
 
-	_, err = io.Copy(w, s.gzipr)
+	n, err := io.Copy(w, io.LimitReader(s.gzipr, s.bodySizeLimit))
 	s.gzipr.Close()
 	if err != nil {
 		return "", err
 	}
+	if n >= s.bodySizeLimit {
+		targetScrapeExceededBodySizeLimit.Inc()
+		return "", errBodySizeLimit
+	}
 	return resp.Header.Get("Content-Type"), nil
 }
 

scrape/scrape_test.go

@@ -15,6 +15,7 @@ package scrape
 
 import (
 	"bytes"
+	"compress/gzip"
 	"context"
 	"fmt"
 	"io"
@@ -28,7 +29,7 @@ import (
 	"testing"
 	"time"
 
-	"github.com/go-kit/kit/log"
+	"github.com/go-kit/log"
 	"github.com/pkg/errors"
 	dto "github.com/prometheus/client_model/go"
 	config_util "github.com/prometheus/common/config"
@@ -1950,6 +1951,69 @@ func TestTargetScrapeScrapeNotFound(t *testing.T) {
 	require.Contains(t, err.Error(), "404", "Expected \"404 NotFound\" error but got: %s", err)
 }
 
+func TestTargetScraperBodySizeLimit(t *testing.T) {
+	const (
+		bodySizeLimit = 15
+		responseBody  = "metric_a 1\nmetric_b 2\n"
+	)
+	var gzipResponse bool
+	server := httptest.NewServer(
+		http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			w.Header().Set("Content-Type", `text/plain; version=0.0.4`)
+			if gzipResponse {
+				w.Header().Set("Content-Encoding", "gzip")
+				gw := gzip.NewWriter(w)
+				defer gw.Close()
+				gw.Write([]byte(responseBody))
+				return
+			}
+			w.Write([]byte(responseBody))
+		}),
+	)
+	defer server.Close()
+
+	serverURL, err := url.Parse(server.URL)
+	if err != nil {
+		panic(err)
+	}
+
+	ts := &targetScraper{
+		Target: &Target{
+			labels: labels.FromStrings(
+				model.SchemeLabel, serverURL.Scheme,
+				model.AddressLabel, serverURL.Host,
+			),
+		},
+		client:        http.DefaultClient,
+		bodySizeLimit: bodySizeLimit,
+	}
+	var buf bytes.Buffer
+
+	// Target response uncompressed body, scrape with body size limit.
+	_, err = ts.scrape(context.Background(), &buf)
+	require.ErrorIs(t, err, errBodySizeLimit)
+	require.Equal(t, bodySizeLimit, buf.Len())
+	// Target response gzip compressed body, scrape with body size limit.
+	gzipResponse = true
+	buf.Reset()
+	_, err = ts.scrape(context.Background(), &buf)
+	require.ErrorIs(t, err, errBodySizeLimit)
+	require.Equal(t, bodySizeLimit, buf.Len())
+	// Target response uncompressed body, scrape without body size limit.
+	gzipResponse = false
+	buf.Reset()
+	ts.bodySizeLimit = 0
+	_, err = ts.scrape(context.Background(), &buf)
+	require.NoError(t, err)
+	require.Equal(t, len(responseBody), buf.Len())
+	// Target response gzip compressed body, scrape without body size limit.
+	gzipResponse = true
+	buf.Reset()
+	_, err = ts.scrape(context.Background(), &buf)
+	require.NoError(t, err)
+	require.Equal(t, len(responseBody), buf.Len())
+}
+
 // testScraper implements the scraper interface and allows setting values
 // returned by its methods. It also allows setting a custom scrape function.
 type testScraper struct {

scrape/target.go

@@ -414,8 +414,9 @@ func populateLabels(lset labels.Labels, cfg *config.ScrapeConfig) (res, orig lab
 }
 
 // targetsFromGroup builds targets based on the given TargetGroup and config.
-func targetsFromGroup(tg *targetgroup.Group, cfg *config.ScrapeConfig) ([]*Target, error) {
+func targetsFromGroup(tg *targetgroup.Group, cfg *config.ScrapeConfig) ([]*Target, []error) {
 	targets := make([]*Target, 0, len(tg.Targets))
+	failures := []error{}
 
 	for i, tlset := range tg.Targets {
 		lbls := make([]labels.Label, 0, len(tlset)+len(tg.Labels))
@@ -433,11 +434,11 @@ func targetsFromGroup(tg *targetgroup.Group, cfg *config.ScrapeConfig) ([]*Targe
 
 		lbls, origLabels, err := populateLabels(lset, cfg)
 		if err != nil {
-			return nil, errors.Wrapf(err, "instance %d in group %s", i, tg)
+			failures = append(failures, errors.Wrapf(err, "instance %d in group %s", i, tg))
 		}
 		if lbls != nil || origLabels != nil {
 			targets = append(targets, NewTarget(lbls, origLabels, cfg.Params))
 		}
 	}
-	return targets, nil
+	return targets, failures
 }

scrape/target_test.go

@@ -29,6 +29,8 @@ import (
 	"github.com/prometheus/common/model"
 	"github.com/stretchr/testify/require"
 
+	"github.com/prometheus/prometheus/config"
+	"github.com/prometheus/prometheus/discovery/targetgroup"
 	"github.com/prometheus/prometheus/pkg/labels"
 )
 
@@ -365,3 +367,18 @@ func TestNewClientWithBadTLSConfig(t *testing.T) {
 		t.Fatalf("Expected error, got nil.")
 	}
 }
+
+func TestTargetsFromGroup(t *testing.T) {
+	expectedError := "instance 0 in group : no address"
+
+	targets, failures := targetsFromGroup(&targetgroup.Group{Targets: []model.LabelSet{{}, {model.AddressLabel: "localhost:9090"}}}, &config.ScrapeConfig{})
+	if len(targets) != 1 {
+		t.Fatalf("Expected 1 target, got %v", len(targets))
+	}
+	if len(failures) != 1 {
+		t.Fatalf("Expected 1 failure, got %v", len(failures))
+	}
+	if failures[0].Error() != expectedError {
+		t.Fatalf("Expected error %s, got %s", expectedError, failures[0])
+	}
+}

scripts/errcheck_excludes.txt

@@ -7,7 +7,7 @@ io.WriteString
 (*net/http.Server).Shutdown
 
 // Never check for logger errors.
-(github.com/go-kit/kit/log.Logger).Log
+(github.com/go-kit/log.Logger).Log
 
 // Never check for rollback errors as Rollback() is called when a previous error was detected.
 (github.com/prometheus/prometheus/storage.Appender).Rollback

scripts/sync_repo_files.sh

@@ -15,14 +15,19 @@ orgs="prometheus prometheus-community"
 
 color_red='\e[31m'
 color_green='\e[32m'
+color_yellow='\e[33m'
 color_none='\e[0m'
 
 echo_red() {
-  echo -e "${color_red}$@${color_none}"
+  echo -e "${color_red}$@${color_none}" 1>&2
 }
 
 echo_green() {
-  echo -e "${color_green}$@${color_none}"
+  echo -e "${color_green}$@${color_none}" 1>&2
+}
+
+echo_yellow() {
+  echo -e "${color_yellow}$@${color_none}" 1>&2
 }
 
 GITHUB_TOKEN="${GITHUB_TOKEN:-}"
@@ -100,8 +105,8 @@ check_circleci_orb() {
 
   orb_version="$(curl -sL --fail "${ci_config_url}" | yq eval '.orbs.prometheus' -)"
   if [[ -z "${orb_version}" ]]; then
-    echo_red "ERROR: Failed to fetch CirleCI orb version from '${org_repo}'"
+    echo_yellow "WARNING: Failed to fetch CirleCI orb version from '${org_repo}'"
-    return 1
+    return 0
   fi
 
   if [[ "${orb_version}" != "null" && "${orb_version}" != "${prometheus_orb_version}" ]]; then