mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-12-26 06:04:20 -08:00
3bc9a93c20
Fix the error logging of the promhttp handler by connecting it to the promlog setup. * Switch to go-kit/log. * Cleanup CHANGELOG. Fixes: https://github.com/prometheus/node_exporter/issues/1886 Signed-off-by: Ben Kochie <superq@gmail.com>
241 lines
9.4 KiB
Go
241 lines
9.4 KiB
Go
// Copyright 2020 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 collector
|
|
|
|
import (
|
|
"fmt"
|
|
"reflect"
|
|
|
|
"github.com/go-kit/log"
|
|
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
"github.com/prometheus/procfs"
|
|
)
|
|
|
|
const zoneinfoSubsystem = "zoneinfo"
|
|
|
|
type zoneinfoCollector struct {
|
|
gaugeMetricDescs map[string]*prometheus.Desc
|
|
counterMetricDescs map[string]*prometheus.Desc
|
|
logger log.Logger
|
|
fs procfs.FS
|
|
}
|
|
|
|
func init() {
|
|
registerCollector("zoneinfo", defaultDisabled, NewZoneinfoCollector)
|
|
}
|
|
|
|
// NewZoneinfoCollector returns a new Collector exposing zone stats.
|
|
func NewZoneinfoCollector(logger log.Logger) (Collector, error) {
|
|
fs, err := procfs.NewFS(*procPath)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to open procfs: %w", err)
|
|
}
|
|
return &zoneinfoCollector{
|
|
gaugeMetricDescs: createGaugeMetricDescriptions(),
|
|
counterMetricDescs: createCounterMetricDescriptions(),
|
|
logger: logger,
|
|
fs: fs,
|
|
}, nil
|
|
}
|
|
|
|
func (c *zoneinfoCollector) Update(ch chan<- prometheus.Metric) error {
|
|
metrics, err := c.fs.Zoneinfo()
|
|
if err != nil {
|
|
return fmt.Errorf("couldn't get zoneinfo: %w", err)
|
|
}
|
|
for _, metric := range metrics {
|
|
node := metric.Node
|
|
zone := metric.Zone
|
|
metricStruct := reflect.ValueOf(metric)
|
|
typeOfMetricStruct := metricStruct.Type()
|
|
for i := 0; i < metricStruct.NumField(); i++ {
|
|
value := reflect.Indirect(metricStruct.Field(i))
|
|
if value.Kind() != reflect.Int64 {
|
|
continue
|
|
}
|
|
metricName := typeOfMetricStruct.Field(i).Name
|
|
desc, ok := c.gaugeMetricDescs[metricName]
|
|
metricType := prometheus.GaugeValue
|
|
if !ok {
|
|
desc = c.counterMetricDescs[metricName]
|
|
metricType = prometheus.CounterValue
|
|
}
|
|
ch <- prometheus.MustNewConstMetric(desc, metricType,
|
|
float64(reflect.Indirect(metricStruct.Field(i)).Int()),
|
|
node, zone)
|
|
}
|
|
for i, value := range metric.Protection {
|
|
metricName := fmt.Sprintf("protection_%d", i)
|
|
desc, ok := c.gaugeMetricDescs[metricName]
|
|
if !ok {
|
|
desc = prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, metricName),
|
|
fmt.Sprintf("Protection array %d. field", i),
|
|
[]string{"node", "zone"}, nil)
|
|
c.gaugeMetricDescs[metricName] = desc
|
|
}
|
|
ch <- prometheus.MustNewConstMetric(desc, prometheus.GaugeValue,
|
|
float64(*value), node, zone)
|
|
}
|
|
|
|
}
|
|
return nil
|
|
}
|
|
func createGaugeMetricDescriptions() map[string]*prometheus.Desc {
|
|
return map[string]*prometheus.Desc{
|
|
"NrFreePages": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "nr_free_pages"),
|
|
"Total number of free pages in the zone",
|
|
[]string{"node", "zone"}, nil),
|
|
"Min": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "min_pages"),
|
|
"Zone watermark pages_min",
|
|
[]string{"node", "zone"}, nil),
|
|
"Low": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "low_pages"),
|
|
"Zone watermark pages_low",
|
|
[]string{"node", "zone"}, nil),
|
|
"High": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "high_pages"),
|
|
"Zone watermark pages_high",
|
|
[]string{"node", "zone"}, nil),
|
|
"Scanned": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "scanned_pages"),
|
|
"Pages scanned since last reclaim",
|
|
[]string{"node", "zone"}, nil),
|
|
"Spanned": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "spanned_pages"),
|
|
"Total pages spanned by the zone, including holes",
|
|
[]string{"node", "zone"}, nil),
|
|
"Present": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "present_pages"),
|
|
"Physical pages existing within the zone",
|
|
[]string{"node", "zone"}, nil),
|
|
"Managed": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "managed_pages"),
|
|
"Present pages managed by the buddy system",
|
|
[]string{"node", "zone"}, nil),
|
|
"NrActiveAnon": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "nr_active_anon_pages"),
|
|
"Number of anonymous pages recently more used",
|
|
[]string{"node", "zone"}, nil),
|
|
"NrInactiveAnon": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "nr_inactive_anon_pages"),
|
|
"Number of anonymous pages recently less used",
|
|
[]string{"node", "zone"}, nil),
|
|
"NrIsolatedAnon": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "nr_isolated_anon_pages"),
|
|
"Temporary isolated pages from anon lru",
|
|
[]string{"node", "zone"}, nil),
|
|
"NrAnonPages": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "nr_anon_pages"),
|
|
"Number of anonymous pages currently used by the system",
|
|
[]string{"node", "zone"}, nil),
|
|
"NrAnonTransparentHugepages": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "nr_anon_transparent_hugepages"),
|
|
"Number of anonymous transparent huge pages currently used by the system",
|
|
[]string{"node", "zone"}, nil),
|
|
"NrActiveFile": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "nr_active_file_pages"),
|
|
"Number of active pages with file-backing",
|
|
[]string{"node", "zone"}, nil),
|
|
"NrInactiveFile": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "nr_inactive_file_pages"),
|
|
"Number of inactive pages with file-backing",
|
|
[]string{"node", "zone"}, nil),
|
|
"NrIsolatedFile": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "nr_isolated_file_pages"),
|
|
"Temporary isolated pages from file lru",
|
|
[]string{"node", "zone"}, nil),
|
|
"NrFilePages": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "nr_file_pages"),
|
|
"Number of file pages",
|
|
[]string{"node", "zone"}, nil),
|
|
"NrSlabReclaimable": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "nr_slab_reclaimable_pages"),
|
|
"Number of reclaimable slab pages",
|
|
[]string{"node", "zone"}, nil),
|
|
"NrSlabUnreclaimable": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "nr_slab_unreclaimable_pages"),
|
|
"Number of unreclaimable slab pages",
|
|
[]string{"node", "zone"}, nil),
|
|
"NrMlockStack": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "nr_mlock_stack_pages"),
|
|
"mlock()ed pages found and moved off LRU",
|
|
[]string{"node", "zone"}, nil),
|
|
"NrKernelStack": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "nr_kernel_stacks"),
|
|
"Number of kernel stacks",
|
|
[]string{"node", "zone"}, nil),
|
|
"NrMapped": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "nr_mapped_pages"),
|
|
"Number of mapped pages",
|
|
[]string{"node", "zone"}, nil),
|
|
"NrDirty": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "nr_dirty_pages"),
|
|
"Number of dirty pages",
|
|
[]string{"node", "zone"}, nil),
|
|
"NrWriteback": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "nr_writeback_pages"),
|
|
"Number of writeback pages",
|
|
[]string{"node", "zone"}, nil),
|
|
"NrUnevictable": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "nr_unevictable_pages"),
|
|
"Number of unevictable pages",
|
|
[]string{"node", "zone"}, nil),
|
|
"NrShmem": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "nr_shmem_pages"),
|
|
"Number of shmem pages (included tmpfs/GEM pages)",
|
|
[]string{"node", "zone"}, nil),
|
|
}
|
|
|
|
}
|
|
func createCounterMetricDescriptions() map[string]*prometheus.Desc {
|
|
return map[string]*prometheus.Desc{
|
|
"NrDirtied": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "nr_dirtied_total"),
|
|
"Page dirtyings since bootup",
|
|
[]string{"node", "zone"}, nil),
|
|
"NrWritten": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "nr_written_total"),
|
|
"Page writings since bootup",
|
|
[]string{"node", "zone"}, nil),
|
|
"NumaHit": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "numa_hit_total"),
|
|
"Allocated in intended node",
|
|
[]string{"node", "zone"}, nil),
|
|
"NumaMiss": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "numa_miss_total"),
|
|
"Allocated in non intended node",
|
|
[]string{"node", "zone"}, nil),
|
|
"NumaForeign": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "numa_foreign_total"),
|
|
"Was intended here, hit elsewhere",
|
|
[]string{"node", "zone"}, nil),
|
|
"NumaInterleave": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "numa_interleave_total"),
|
|
"Interleaver preferred this zone",
|
|
[]string{"node", "zone"}, nil),
|
|
"NumaLocal": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "numa_local_total"),
|
|
"Allocation from local node",
|
|
[]string{"node", "zone"}, nil),
|
|
"NumaOther": prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, zoneinfoSubsystem, "numa_other_total"),
|
|
"Allocation from other node",
|
|
[]string{"node", "zone"}, nil),
|
|
}
|
|
}
|