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Add limits to global config (#12126)

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* Add limits to global config

Signed-off-by: Arianna Vespri <arianna.vespri@yahoo.it>

* Move changes into Validate func

Signed-off-by: Arianna Vespri <arianna.vespri@yahoo.it>

* Make comments consistent wrt 0 meaning no limit

Signed-off-by: Arianna Vespri <arianna.vespri@yahoo.it>

* Document global limits

Signed-off-by: Arianna Vespri <arianna.vespri@yahoo.it>

---------

Signed-off-by: Arianna Vespri <arianna.vespri@yahoo.it>
This commit is contained in:
Arianna Vespri 2023-05-30 10:22:23 +02:00 committed by GitHub
parent f7846a7e9c
commit a16b876a05
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GPG key ID: 4AEE18F83AFDEB23
4 changed files with 394 additions and 110 deletions
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61
config/config.go
View file

@ -267,7 +267,7 @@ func (c *Config) GetScrapeConfigs() ([]*ScrapeConfig, error) {
for i, scfg := range c.ScrapeConfigs {
// We do these checks for library users that would not call Validate in
// Unmarshal.
if err := scfg.Validate(c.GlobalConfig.ScrapeInterval, c.GlobalConfig.ScrapeTimeout); err != nil {
if err := scfg.Validate(c.GlobalConfig); err != nil {
return nil, err
}
@ -294,7 +294,7 @@ func (c *Config) GetScrapeConfigs() ([]*ScrapeConfig, error) {
return nil, fileErr(filename, err)
}
for _, scfg := range cfg.ScrapeConfigs {
if err := scfg.Validate(c.GlobalConfig.ScrapeInterval, c.GlobalConfig.ScrapeTimeout); err != nil {
if err := scfg.Validate(c.GlobalConfig); err != nil {
return nil, fileErr(filename, err)
}
@ -343,7 +343,7 @@ func (c *Config) UnmarshalYAML(unmarshal func(interface{}) error) error {
// Do global overrides and validate unique names.
jobNames := map[string]struct{}{}
for _, scfg := range c.ScrapeConfigs {
if err := scfg.Validate(c.GlobalConfig.ScrapeInterval, c.GlobalConfig.ScrapeTimeout); err != nil {
if err := scfg.Validate(c.GlobalConfig); err != nil {
return err
}
@ -390,6 +390,24 @@ type GlobalConfig struct {
QueryLogFile string `yaml:"query_log_file,omitempty"`
// The labels to add to any timeseries that this Prometheus instance scrapes.
ExternalLabels labels.Labels `yaml:"external_labels,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. 0 means no limit.
SampleLimit uint `yaml:"sample_limit,omitempty"`
// More than this many targets after the target relabeling will cause the
// scrapes to fail. 0 means no limit.
TargetLimit uint `yaml:"target_limit,omitempty"`
// More than this many labels post metric-relabeling will cause the scrape to
// fail. 0 means no limit.
LabelLimit uint `yaml:"label_limit,omitempty"`
// More than this label name length post metric-relabeling will cause the
// scrape to fail. 0 means no limit.
LabelNameLengthLimit uint `yaml:"label_name_length_limit,omitempty"`
// More than this label value length post metric-relabeling will cause the
// scrape to fail. 0 means no limit.
LabelValueLengthLimit uint `yaml:"label_value_length_limit,omitempty"`
}
// SetDirectory joins any relative file paths with dir.
@ -478,19 +496,19 @@ type ScrapeConfig struct {
// 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.
// fail. 0 means no limit.
SampleLimit uint `yaml:"sample_limit,omitempty"`
// More than this many targets after the target relabeling will cause the
// scrapes to fail.
// scrapes to fail. 0 means no limit.
TargetLimit uint `yaml:"target_limit,omitempty"`
// More than this many labels post metric-relabeling will cause the scrape to
// fail.
// fail. 0 means no limit.
LabelLimit uint `yaml:"label_limit,omitempty"`
// More than this label name length post metric-relabeling will cause the
// scrape to fail.
// scrape to fail. 0 means no limit.
LabelNameLengthLimit uint `yaml:"label_name_length_limit,omitempty"`
// More than this label value length post metric-relabeling will cause the
// scrape to fail.
// scrape to fail. 0 means no limit.
LabelValueLengthLimit uint `yaml:"label_value_length_limit,omitempty"`
// More than this many buckets in a native histogram will cause the scrape to
// fail.
@ -552,25 +570,44 @@ func (c *ScrapeConfig) UnmarshalYAML(unmarshal func(interface{}) error) error {
return nil
}
func (c *ScrapeConfig) Validate(defaultInterval, defaultTimeout model.Duration) error {
func (c *ScrapeConfig) Validate(globalConfig GlobalConfig) error {
if c == nil {
return errors.New("empty or null scrape config section")
}
// First set the correct scrape interval, then check that the timeout
// (inferred or explicit) is not greater than that.
if c.ScrapeInterval == 0 {
c.ScrapeInterval = defaultInterval
c.ScrapeInterval = globalConfig.ScrapeInterval
}
if c.ScrapeTimeout > c.ScrapeInterval {
return fmt.Errorf("scrape timeout greater than scrape interval for scrape config with job name %q", c.JobName)
}
if c.ScrapeTimeout == 0 {
if defaultTimeout > c.ScrapeInterval {
if globalConfig.ScrapeTimeout > c.ScrapeInterval {
c.ScrapeTimeout = c.ScrapeInterval
} else {
c.ScrapeTimeout = defaultTimeout
c.ScrapeTimeout = globalConfig.ScrapeTimeout
}
}
if c.BodySizeLimit == 0 {
c.BodySizeLimit = globalConfig.BodySizeLimit
}
if c.SampleLimit == 0 {
c.SampleLimit = globalConfig.SampleLimit
}
if c.TargetLimit == 0 {
c.TargetLimit = globalConfig.TargetLimit
}
if c.LabelLimit == 0 {
c.LabelLimit = globalConfig.LabelLimit
}
if c.LabelNameLengthLimit == 0 {
c.LabelNameLengthLimit = globalConfig.LabelNameLengthLimit
}
if c.LabelValueLengthLimit == 0 {
c.LabelValueLengthLimit = globalConfig.LabelValueLengthLimit
}
return nil
}

203
config/config_test.go
View file

@ -68,6 +68,15 @@ func mustParseURL(u string) *config.URL {
return &config.URL{URL: parsed}
}
const (
globBodySizeLimit = 15 * units.MiB
globSampleLimit = 1500
globTargetLimit = 30
globLabelLimit = 30
globLabelNameLengthLimit = 200
globLabelValueLengthLimit = 200
)
var expectedConf = &Config{
GlobalConfig: GlobalConfig{
ScrapeInterval: model.Duration(15 * time.Second),
@ -76,6 +85,13 @@ var expectedConf = &Config{
QueryLogFile: "",
ExternalLabels: labels.FromStrings("foo", "bar", "monitor", "codelab"),
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
},
RuleFiles: []string{
@ -169,6 +185,12 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
@ -266,6 +288,10 @@ var expectedConf = &Config{
ScrapeTimeout: model.Duration(5 * time.Second),
BodySizeLimit: 10 * units.MiB,
SampleLimit: 1000,
TargetLimit: 35,
LabelLimit: 35,
LabelNameLengthLimit: 210,
LabelValueLengthLimit: 210,
HTTPClientConfig: config.HTTPClientConfig{
BasicAuth: &config.BasicAuth{
@ -355,6 +381,12 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
@ -402,6 +434,12 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: model.Duration(10 * time.Second),
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
MetricsPath: "/metrics",
Scheme: "http",
@ -427,6 +465,12 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
@ -458,6 +502,12 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
@ -489,6 +539,12 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
@ -509,6 +565,12 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
@ -538,6 +600,12 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
@ -564,6 +632,12 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
@ -597,6 +671,12 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
@ -620,6 +700,12 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
@ -646,6 +732,12 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
@ -665,6 +757,12 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
@ -687,6 +785,12 @@ var expectedConf = &Config{
HonorTimestamps: false,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
MetricsPath: "/federate",
Scheme: DefaultScrapeConfig.Scheme,
@ -709,6 +813,12 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
@ -731,6 +841,12 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
@ -750,6 +866,12 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
@ -777,6 +899,12 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
@ -803,6 +931,12 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
@ -825,6 +959,12 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
@ -847,6 +987,12 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
@ -873,6 +1019,12 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
@ -902,6 +1054,12 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
@ -950,6 +1108,12 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
@ -969,6 +1133,13 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
HTTPClientConfig: config.DefaultHTTPClientConfig,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
@ -998,6 +1169,13 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
HTTPClientConfig: config.DefaultHTTPClientConfig,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
@ -1033,6 +1211,12 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
@ -1060,6 +1244,13 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
HTTPClientConfig: config.DefaultHTTPClientConfig,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
@ -1080,6 +1271,12 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
@ -1104,6 +1301,12 @@ var expectedConf = &Config{
HonorTimestamps: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
BodySizeLimit: globBodySizeLimit,
SampleLimit: globSampleLimit,
TargetLimit: globTargetLimit,
LabelLimit: globLabelLimit,
LabelNameLengthLimit: globLabelNameLengthLimit,
LabelValueLengthLimit: globLabelValueLengthLimit,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,

11
config/testdata/conf.good.yml vendored
View file

@ -2,6 +2,12 @@
global:
scrape_interval: 15s
evaluation_interval: 30s
body_size_limit: 15MB
sample_limit: 1500
target_limit: 30
label_limit: 30
label_name_length_limit: 200
label_value_length_limit: 200
# scrape_timeout is set to the global default (10s).
external_labels:
@ -111,6 +117,11 @@ scrape_configs:
body_size_limit: 10MB
sample_limit: 1000
target_limit: 35
label_limit: 35
label_name_length_limit: 210
label_value_length_limit: 210
metrics_path: /my_path
scheme: https

33
docs/configuration/configuration.md
View file

@ -73,6 +73,39 @@ global:
# Reloading the configuration will reopen the file.
[ query_log_file: <string> ]
# 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.
[ sample_limit: <int> | default = 0 ]
# Per-scrape limit on number of labels that will be accepted for a sample. If
# more than this number of labels are present post metric-relabeling, the
# entire scrape will be treated as failed. 0 means no limit.
[ label_limit: <int> | default = 0 ]
# Per-scrape limit on length of labels name that will be accepted for a sample.
# If a label name is longer than this number post metric-relabeling, the entire
# scrape will be treated as failed. 0 means no limit.
[ label_name_length_limit: <int> | default = 0 ]
# Per-scrape limit on length of labels value that will be accepted for a sample.
# If a label value is longer than this number post metric-relabeling, the
# entire scrape will be treated as failed. 0 means no limit.
[ label_value_length_limit: <int> | default = 0 ]
# Per-scrape config limit on number of unique targets that will be
# accepted. If more than this number of targets are present after target
# relabeling, Prometheus will mark the targets as failed without scraping them.
# 0 means no limit. This is an experimental feature, this behaviour could
# change in the future.
[ target_limit: <int> | default = 0 ]
# Rule files specifies a list of globs. Rules and alerts are read from
# all matching files.
rule_files: