First implementation of physical_disk collector (#803)
* Added physical_disk collector. Signed-off-by: Rob Scheepens <rob.scheepens@nutanix.com> Signed-off-by: Brantley West <brantley@nutanix.com> * exporter.go: Added physical_disk to defaultCollectors Signed-off-by: Rob Scheepens <rob.scheepens@nutanix.com> Signed-off-by: Brantley West <brantley@nutanix.com> * Fix test cases for physicaldisk metrics Signed-off-by: Rob Scheepens <rob.scheepens@nutanix.com> Signed-off-by: Brantley West <brantley@nutanix.com> * physical_disk.go: cleanup gofmt error Signed-off-by: Brantley West <brantley@nutanix.com> * physical_disk.go: populate physical disk 'number' label Signed-off-by: Brantley West <brantley@nutanix.com> * Added docs/collector.physical_disk.md. Signed-off-by: Rob Scheepens <rob.scheepens@nutanix.com> * physical_disk.go: change 'number' label to 'disk' to match node_exporter label Signed-off-by: Brantley West <brantley@nutanix.com> * physical_disk.go: adopt github.com/go-kit/log Signed-off-by: Brantley West <brantley@nutanix.com> * physical_disk.go: adopt include/exclude disk list Signed-off-by: Brantley West <brantley@nutanix.com> * fix: Add init config for physical_disk collector Signed-off-by: Ben Reedy <breed808@breed808.com> * chore: gofmt physical_disk collector Signed-off-by: Ben Reedy <breed808@breed808.com> --------- Signed-off-by: Rob Scheepens <rob.scheepens@nutanix.com> Signed-off-by: Brantley West <brantley@nutanix.com> Signed-off-by: Ben Reedy <breed808@breed808.com> Co-authored-by: Brantley West <brantley@nutanix.com> Co-authored-by: Ben Reedy <breed808@breed808.com>
This commit is contained in:
rob-scheepens
GitHub
parent
083537a96a
commit
07fff6afc2
2
Makefile
2
Makefile
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@ -20,7 +20,7 @@ test:
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go test -v ./...
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bench:
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go test -v -bench='benchmark(cpu|logicaldisk|logon|memory|net|process|service|system|tcp|time)collector' ./...
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go test -v -bench='benchmark(cpu|logicaldisk|physicaldisk|logon|memory|net|process|service|system|tcp|time)collector' ./...
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lint:
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golangci-lint -c .golangci.yaml run
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@ -288,6 +288,14 @@ var collectors = []collectorInit{
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return []string{"Paging File"}
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},
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},
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{
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name: "physical_disk",
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flags: newPhysicalDiskCollectorFlags,
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builder: NewPhysicalDiskCollector,
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perfCounterFunc: func(_ log.Logger) []string {
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return []string{"PhysicalDisk"}
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},
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},
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{
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name: "process",
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flags: newProcessCollectorFlags,
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@ -0,0 +1,298 @@
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//go:build windows
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// +build windows
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package collector
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import (
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"fmt"
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"regexp"
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"strings"
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"github.com/alecthomas/kingpin/v2"
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"github.com/go-kit/log"
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"github.com/go-kit/log/level"
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"github.com/prometheus/client_golang/prometheus"
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)
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const (
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FlagPhysicalDiskExclude = "collector.physical_disk.disk-exclude"
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FlagPhysicalDiskInclude = "collector.physical_disk.disk-include"
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)
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var (
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diskInclude *string
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diskExclude *string
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diskIncludeSet bool
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diskExcludeSet bool
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)
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// A PhysicalDiskCollector is a Prometheus collector for perflib PhysicalDisk metrics
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type PhysicalDiskCollector struct {
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logger log.Logger
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RequestsQueued *prometheus.Desc
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ReadBytesTotal *prometheus.Desc
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ReadsTotal *prometheus.Desc
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WriteBytesTotal *prometheus.Desc
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WritesTotal *prometheus.Desc
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ReadTime *prometheus.Desc
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WriteTime *prometheus.Desc
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IdleTime *prometheus.Desc
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SplitIOs *prometheus.Desc
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ReadLatency *prometheus.Desc
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WriteLatency *prometheus.Desc
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ReadWriteLatency *prometheus.Desc
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diskIncludePattern *regexp.Regexp
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diskExcludePattern *regexp.Regexp
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}
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// newPhysicalDiskCollectorFlags ...
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func newPhysicalDiskCollectorFlags(app *kingpin.Application) {
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diskInclude = app.Flag(
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FlagPhysicalDiskInclude,
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"Regexp of disks to include. Disk number must both match include and not match exclude to be included.",
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).Default(".+").PreAction(func(c *kingpin.ParseContext) error {
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diskIncludeSet = true
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return nil
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}).String()
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diskExclude = app.Flag(
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FlagPhysicalDiskExclude,
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"Regexp of disks to exclude. Disk number must both match include and not match exclude to be included.",
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).Default("").PreAction(func(c *kingpin.ParseContext) error {
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diskExcludeSet = true
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return nil
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}).String()
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}
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// NewPhysicalDiskCollector ...
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func NewPhysicalDiskCollector(logger log.Logger) (Collector, error) {
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const subsystem = "physical_disk"
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logger = log.With(logger, "collector", subsystem)
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return &PhysicalDiskCollector{
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logger: logger,
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RequestsQueued: prometheus.NewDesc(
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prometheus.BuildFQName(Namespace, subsystem, "requests_queued"),
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"The number of requests queued to the disk (PhysicalDisk.CurrentDiskQueueLength)",
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[]string{"disk"},
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nil,
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),
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ReadBytesTotal: prometheus.NewDesc(
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prometheus.BuildFQName(Namespace, subsystem, "read_bytes_total"),
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"The number of bytes transferred from the disk during read operations (PhysicalDisk.DiskReadBytesPerSec)",
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[]string{"disk"},
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nil,
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),
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ReadsTotal: prometheus.NewDesc(
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prometheus.BuildFQName(Namespace, subsystem, "reads_total"),
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"The number of read operations on the disk (PhysicalDisk.DiskReadsPerSec)",
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[]string{"disk"},
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nil,
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),
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WriteBytesTotal: prometheus.NewDesc(
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prometheus.BuildFQName(Namespace, subsystem, "write_bytes_total"),
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"The number of bytes transferred to the disk during write operations (PhysicalDisk.DiskWriteBytesPerSec)",
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[]string{"disk"},
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nil,
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),
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WritesTotal: prometheus.NewDesc(
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prometheus.BuildFQName(Namespace, subsystem, "writes_total"),
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"The number of write operations on the disk (PhysicalDisk.DiskWritesPerSec)",
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[]string{"disk"},
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nil,
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),
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ReadTime: prometheus.NewDesc(
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prometheus.BuildFQName(Namespace, subsystem, "read_seconds_total"),
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"Seconds that the disk was busy servicing read requests (PhysicalDisk.PercentDiskReadTime)",
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[]string{"disk"},
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nil,
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),
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WriteTime: prometheus.NewDesc(
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prometheus.BuildFQName(Namespace, subsystem, "write_seconds_total"),
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"Seconds that the disk was busy servicing write requests (PhysicalDisk.PercentDiskWriteTime)",
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[]string{"disk"},
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nil,
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),
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IdleTime: prometheus.NewDesc(
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prometheus.BuildFQName(Namespace, subsystem, "idle_seconds_total"),
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"Seconds that the disk was idle (PhysicalDisk.PercentIdleTime)",
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[]string{"disk"},
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nil,
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),
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SplitIOs: prometheus.NewDesc(
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prometheus.BuildFQName(Namespace, subsystem, "split_ios_total"),
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"The number of I/Os to the disk were split into multiple I/Os (PhysicalDisk.SplitIOPerSec)",
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[]string{"disk"},
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nil,
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),
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ReadLatency: prometheus.NewDesc(
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prometheus.BuildFQName(Namespace, subsystem, "read_latency_seconds_total"),
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"Shows the average time, in seconds, of a read operation from the disk (PhysicalDisk.AvgDiskSecPerRead)",
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[]string{"disk"},
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nil,
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),
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WriteLatency: prometheus.NewDesc(
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prometheus.BuildFQName(Namespace, subsystem, "write_latency_seconds_total"),
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"Shows the average time, in seconds, of a write operation to the disk (PhysicalDisk.AvgDiskSecPerWrite)",
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[]string{"disk"},
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nil,
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),
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ReadWriteLatency: prometheus.NewDesc(
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prometheus.BuildFQName(Namespace, subsystem, "read_write_latency_seconds_total"),
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"Shows the time, in seconds, of the average disk transfer (PhysicalDisk.AvgDiskSecPerTransfer)",
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[]string{"disk"},
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nil,
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),
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diskIncludePattern: regexp.MustCompile(fmt.Sprintf("^(?:%s)$", *diskInclude)),
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diskExcludePattern: regexp.MustCompile(fmt.Sprintf("^(?:%s)$", *diskExclude)),
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}, nil
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}
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// Collect sends the metric values for each metric
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// to the provided prometheus Metric channel.
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func (c *PhysicalDiskCollector) Collect(ctx *ScrapeContext, ch chan<- prometheus.Metric) error {
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if desc, err := c.collect(ctx, ch); err != nil {
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_ = level.Error(c.logger).Log("failed collecting physical_disk metrics", "desc", desc, "err", err)
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return err
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}
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return nil
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}
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// Win32_PerfRawData_PerfDisk_PhysicalDisk docs:
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// - https://docs.microsoft.com/en-us/previous-versions/aa394308(v=vs.85) - Win32_PerfRawData_PerfDisk_PhysicalDisk class
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type PhysicalDisk struct {
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Name string
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CurrentDiskQueueLength float64 `perflib:"Current Disk Queue Length"`
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DiskReadBytesPerSec float64 `perflib:"Disk Read Bytes/sec"`
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DiskReadsPerSec float64 `perflib:"Disk Reads/sec"`
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DiskWriteBytesPerSec float64 `perflib:"Disk Write Bytes/sec"`
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DiskWritesPerSec float64 `perflib:"Disk Writes/sec"`
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PercentDiskReadTime float64 `perflib:"% Disk Read Time"`
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PercentDiskWriteTime float64 `perflib:"% Disk Write Time"`
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PercentIdleTime float64 `perflib:"% Idle Time"`
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SplitIOPerSec float64 `perflib:"Split IO/Sec"`
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AvgDiskSecPerRead float64 `perflib:"Avg. Disk sec/Read"`
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AvgDiskSecPerWrite float64 `perflib:"Avg. Disk sec/Write"`
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AvgDiskSecPerTransfer float64 `perflib:"Avg. Disk sec/Transfer"`
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}
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func (c *PhysicalDiskCollector) collect(ctx *ScrapeContext, ch chan<- prometheus.Metric) (*prometheus.Desc, error) {
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var dst []PhysicalDisk
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if err := unmarshalObject(ctx.perfObjects["PhysicalDisk"], &dst, c.logger); err != nil {
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return nil, err
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}
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for _, disk := range dst {
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if disk.Name == "_Total" ||
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c.diskExcludePattern.MatchString(disk.Name) ||
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!c.diskIncludePattern.MatchString(disk.Name) {
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continue
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}
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// Parse physical disk number from disk.Name. Mountpoint information is
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// sometimes included, e.g. "1 C:".
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disk_number, _, _ := strings.Cut(disk.Name, " ")
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ch <- prometheus.MustNewConstMetric(
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c.RequestsQueued,
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prometheus.GaugeValue,
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disk.CurrentDiskQueueLength,
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disk_number,
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)
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ch <- prometheus.MustNewConstMetric(
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c.ReadBytesTotal,
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prometheus.CounterValue,
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disk.DiskReadBytesPerSec,
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disk_number,
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)
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ch <- prometheus.MustNewConstMetric(
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c.ReadsTotal,
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prometheus.CounterValue,
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disk.DiskReadsPerSec,
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disk_number,
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)
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ch <- prometheus.MustNewConstMetric(
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c.WriteBytesTotal,
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prometheus.CounterValue,
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disk.DiskWriteBytesPerSec,
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disk_number,
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)
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ch <- prometheus.MustNewConstMetric(
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c.WritesTotal,
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prometheus.CounterValue,
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disk.DiskWritesPerSec,
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disk_number,
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)
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ch <- prometheus.MustNewConstMetric(
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c.ReadTime,
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prometheus.CounterValue,
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disk.PercentDiskReadTime,
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disk_number,
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)
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ch <- prometheus.MustNewConstMetric(
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c.WriteTime,
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prometheus.CounterValue,
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disk.PercentDiskWriteTime,
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disk_number,
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)
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ch <- prometheus.MustNewConstMetric(
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c.IdleTime,
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prometheus.CounterValue,
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disk.PercentIdleTime,
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disk_number,
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)
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ch <- prometheus.MustNewConstMetric(
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c.SplitIOs,
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prometheus.CounterValue,
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disk.SplitIOPerSec,
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disk_number,
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)
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ch <- prometheus.MustNewConstMetric(
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c.ReadLatency,
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prometheus.CounterValue,
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disk.AvgDiskSecPerRead*ticksToSecondsScaleFactor,
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disk_number,
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)
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ch <- prometheus.MustNewConstMetric(
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c.WriteLatency,
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prometheus.CounterValue,
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disk.AvgDiskSecPerWrite*ticksToSecondsScaleFactor,
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disk_number,
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)
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ch <- prometheus.MustNewConstMetric(
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c.ReadWriteLatency,
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prometheus.CounterValue,
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disk.AvgDiskSecPerTransfer*ticksToSecondsScaleFactor,
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disk_number,
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)
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}
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return nil, nil
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}
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@ -0,0 +1,80 @@
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# physical_disk collector
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The physical_disk collector exposes metrics about physical disks
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-|-
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Metric name prefix | `physical_disk`
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Data source | Perflib
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Counters | `physicalDisk` ([`Win32_PerfRawData_PerfDisk_physicalDisk`](https://msdn.microsoft.com/en-us/windows/hardware/aa394307(v=vs.71)))
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Enabled by default? | Yes
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## Flags
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### `--collector.physical_disk.disk-include`
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If given, a disk needs to match the include regexp in order for the corresponding disk metrics to be reported
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### `--collector.physical_disk.disk-exclude`
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If given, a disk needs to *not* match the exclude regexp in order for the corresponding disk metrics to be reported
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## Metrics
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Name | Description | Type | Labels
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-----|-------------|------|-------
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`requests_queued` | Number of requests outstanding on the disk at the time the performance data is collected | gauge | `disk`
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`read_bytes_total` | Rate at which bytes are transferred from the disk during read operations | counter | `disk`
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`reads_total` | Rate of read operations on the disk | counter | `disk`
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`write_bytes_total` | Rate at which bytes are transferred to the disk during write operations | counter | `disk`
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`writes_total` | Rate of write operations on the disk | counter | `disk`
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`read_seconds_total` | Seconds the disk was busy servicing read requests | counter | `disk`
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`write_seconds_total` | Seconds the disk was busy servicing write requests | counter | `disk`
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`free_bytes` | Unused space of the disk in bytes (not real time, updates every 10-15 min) | gauge | `disk`
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`size_bytes` | Total size of the disk in bytes (not real time, updates every 10-15 min) | gauge | `disk`
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`idle_seconds_total` | Seconds the disk was idle (not servicing read/write requests) | counter | `disk`
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`split_ios_total` | Number of I/Os to the disk split into multiple I/Os | counter | `disk`
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### Warning about size metrics
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The `free_bytes` and `size_bytes` metrics are not updated in real time and might have a delay of 10-15min.
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This is the same behavior as the windows performance counters.
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### Example metric
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Query the rate of write operations to a disk
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```
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rate(windows_physical_disk_read_bytes_total{instance="localhost", disk=~"0"}[2m])
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```
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## Useful queries
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Calculate rate of total IOPS for disk
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```
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rate(windows_physical_disk_reads_total{instance="localhost", disk=~"0"}[2m]) + rate(windows_physical_disk_writes_total{instance="localhost", disk=~"0"}[2m])
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```
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## Alerting examples
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**prometheus.rules**
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```yaml
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groups:
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- name: Windows Disk Alerts
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rules:
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# Sends an alert when disk space usage is above 95%
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- alert: DiskSpaceUsage
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expr: 100.0 - 100 * (windows_physical_disk_free_bytes / windows_physical_disk_size_bytes) > 95
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for: 10m
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labels:
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severity: high
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annotations:
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summary: "Disk Space Usage (instance {{ $labels.instance }})"
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description: "Disk Space on Drive is used more than 95%\n VALUE = {{ $value }}\n LABELS: {{ $labels }}"
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# Alerts on disks with over 85% space usage predicted to fill within the next four days
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- alert: DiskFilling
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expr: 100 * (windows_physical_disk_free_bytes / windows_physical_disk_size_bytes) < 15 and predict_linear(windows_physical_disk_free_bytes[6h], 4 * 24 * 3600) < 0
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for: 10m
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labels:
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severity: warning
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annotations:
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summary: "Disk full in four days (instance {{ $labels.instance }})"
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description: "{{ $labels.disk }} is expected to fill up within four days. Currently {{ $value | humanize }}% is available.\n VALUE = {{ $value }}\n LABELS: {{ $labels }}"
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```
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@ -49,7 +49,7 @@ type prometheusVersion struct {
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}
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const (
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defaultCollectors = "cpu,cs,logical_disk,net,os,service,system,textfile"
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defaultCollectors = "cpu,cs,logical_disk,physical_disk,net,os,service,system,textfile"
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defaultCollectorsPlaceholder = "[defaults]"
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)
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|
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|
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@ -40,6 +40,7 @@ test_alpha_total 42
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windows_exporter_collector_success{collector="cpu"} 1
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windows_exporter_collector_success{collector="cs"} 1
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windows_exporter_collector_success{collector="logical_disk"} 1
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windows_exporter_collector_success{collector="physical_disk"} 1
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windows_exporter_collector_success{collector="net"} 1
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windows_exporter_collector_success{collector="os"} 1
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windows_exporter_collector_success{collector="service"} 1
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@ -50,6 +51,7 @@ windows_exporter_collector_success{collector="textfile"} 1
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windows_exporter_collector_timeout{collector="cpu"} 0
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windows_exporter_collector_timeout{collector="cs"} 0
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windows_exporter_collector_timeout{collector="logical_disk"} 0
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windows_exporter_collector_timeout{collector="physical_disk"} 0
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windows_exporter_collector_timeout{collector="net"} 0
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windows_exporter_collector_timeout{collector="os"} 0
|
||||
windows_exporter_collector_timeout{collector="service"} 0
|
||||
|
|
@ -89,6 +91,30 @@ windows_exporter_collector_timeout{collector="textfile"} 0
|
|||
# TYPE windows_logical_disk_write_seconds_total counter
|
||||
# HELP windows_logical_disk_writes_total The number of write operations on the disk (LogicalDisk.DiskWritesPerSec)
|
||||
# TYPE windows_logical_disk_writes_total counter
|
||||
# HELP windows_physical_disk_idle_seconds_total Seconds that the disk was idle (PhysicalDisk.PercentIdleTime)
|
||||
# TYPE windows_physical_disk_idle_seconds_total counter
|
||||
# HELP windows_physical_disk_read_bytes_total The number of bytes transferred from the disk during read operations (PhysicalDisk.DiskReadBytesPerSec)
|
||||
# TYPE windows_physical_disk_read_bytes_total counter
|
||||
# HELP windows_physical_disk_read_latency_seconds_total Shows the average time, in seconds, of a read operation from the disk (PhysicalDisk.AvgDiskSecPerRead)
|
||||
# TYPE windows_physical_disk_read_latency_seconds_total counter
|
||||
# HELP windows_physical_disk_read_seconds_total Seconds that the disk was busy servicing read requests (PhysicalDisk.PercentDiskReadTime)
|
||||
# TYPE windows_physical_disk_read_seconds_total counter
|
||||
# HELP windows_physical_disk_read_write_latency_seconds_total Shows the time, in seconds, of the average disk transfer (PhysicalDisk.AvgDiskSecPerTransfer)
|
||||
# TYPE windows_physical_disk_read_write_latency_seconds_total counter
|
||||
# HELP windows_physical_disk_reads_total The number of read operations on the disk (PhysicalDisk.DiskReadsPerSec)
|
||||
# TYPE windows_physical_disk_reads_total counter
|
||||
# HELP windows_physical_disk_requests_queued The number of requests queued to the disk (PhysicalDisk.CurrentDiskQueueLength)
|
||||
# TYPE windows_physical_disk_requests_queued gauge
|
||||
# HELP windows_physical_disk_split_ios_total The number of I/Os to the disk were split into multiple I/Os (PhysicalDisk.SplitIOPerSec)
|
||||
# TYPE windows_physical_disk_split_ios_total counter
|
||||
# HELP windows_physical_disk_write_bytes_total The number of bytes transferred to the disk during write operations (PhysicalDisk.DiskWriteBytesPerSec)
|
||||
# TYPE windows_physical_disk_write_bytes_total counter
|
||||
# HELP windows_physical_disk_write_latency_seconds_total Shows the average time, in seconds, of a write operation to the disk (PhysicalDisk.AvgDiskSecPerWrite)
|
||||
# TYPE windows_physical_disk_write_latency_seconds_total counter
|
||||
# HELP windows_physical_disk_write_seconds_total Seconds that the disk was busy servicing write requests (PhysicalDisk.PercentDiskWriteTime)
|
||||
# TYPE windows_physical_disk_write_seconds_total counter
|
||||
# HELP windows_physical_disk_writes_total The number of write operations on the disk (PhysicalDisk.DiskWritesPerSec)
|
||||
# TYPE windows_physical_disk_writes_total counter
|
||||
# HELP windows_net_bytes_received_total (Network.BytesReceivedPerSec)
|
||||
# TYPE windows_net_bytes_received_total counter
|
||||
# HELP windows_net_bytes_sent_total (Network.BytesSentPerSec)
|
||||
|
|
|
|||
|
|
@ -18,7 +18,7 @@ mkdir $textfile_dir | Out-Null
|
|||
Copy-Item 'e2e-textfile.prom' -Destination "$($textfile_dir)/e2e-textfile.prom"
|
||||
|
||||
# Omit dynamic collector information that will change after each run
|
||||
$skip_re = "^(go_|windows_exporter_build_info|windows_exporter_collector_duration_seconds|windows_exporter_perflib_snapshot_duration_seconds|process_|windows_textfile_mtime_seconds|windows_cpu|windows_cs|windows_logical_disk|windows_net|windows_os|windows_service|windows_system|windows_textfile_mtime_seconds)"
|
||||
$skip_re = "^(go_|windows_exporter_build_info|windows_exporter_collector_duration_seconds|windows_exporter_perflib_snapshot_duration_seconds|process_|windows_textfile_mtime_seconds|windows_cpu|windows_cs|windows_logical_disk|windows_physical_disk|windows_net|windows_os|windows_service|windows_system|windows_textfile_mtime_seconds)"
|
||||
|
||||
# Start process in background, awaiting HTTP requests.
|
||||
# Use default collectors, port and address: http://localhost:9182/metrics
|
||||
|
|
|
|||
Loading…
Reference in New Issue