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libbeat/cmd/instance: report cgroup stats #21113

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Merged
axw merged 3 commits into from
Sep 26, 2020
Merged

libbeat/cmd/instance: report cgroup stats #21113

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libbeat/cmd/instance: report cgroup stats
axw Sep 16, 2020
69cc63b
move cgroup metrics registration
axw Sep 24, 2020
0d0af1e
Merge branch 'master' into libbeat-monitoring-cgroup-metrics
axw Sep 24, 2020
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86 changes: 84 additions & 2 deletions libbeat/cmd/instance/metrics.go
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,7 @@ import (
"github.com/elastic/beats/v7/libbeat/metric/system/cpu"
"github.com/elastic/beats/v7/libbeat/metric/system/process"
"github.com/elastic/beats/v7/libbeat/monitoring"
"github.com/elastic/gosigar/cgroup"
)

var (
Expand Down Expand Up @@ -65,10 +66,15 @@ func setupMetrics(name string) error {
}

func setupPlatformSpecificMetrics() {
switch runtime.GOOS {
case "linux":
monitoring.NewFunc(beatMetrics, "cgroup", reportBeatCgroups, monitoring.Report)
case "windows":
setupWindowsHandlesMetrics()
}

if runtime.GOOS != "windows" {
monitoring.NewFunc(systemMetrics, "load", reportSystemLoadAverage, monitoring.Report)
} else {
setupWindowsHandlesMetrics()
}

setupLinuxBSDFDMetrics()
Expand Down Expand Up @@ -254,3 +260,79 @@ func reportRuntime(_ monitoring.Mode, V monitoring.Visitor) {

monitoring.ReportInt(V, "goroutines", int64(runtime.NumGoroutine()))
}

func reportBeatCgroups(_ monitoring.Mode, V monitoring.Visitor) {
V.OnRegistryStart()
defer V.OnRegistryFinished()

pid, err := process.GetSelfPid()
if err != nil {
logp.Err("error getting PID for self process: %v", err)
return
}

cgroups, err := cgroup.NewReader("", true)
if err != nil {
if err == cgroup.ErrCgroupsMissing {
logp.Warn("cgroup data collection disabled: %v", err)
} else {
logp.Err("cgroup data collection disabled: %v", err)
}
return
}
selfStats, err := cgroups.GetStatsForProcess(pid)
if err != nil {
logp.Err("error getting group status: %v", err)
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@schans schans Jan 9, 2021

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Shouldn't that be "error getting cgroup stats"? The error message puzzled me initially..

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@axw axw Jan 11, 2021

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Indeed :)
Thanks for pointing that out, will be fixed by #23413

return
}

if cpu := selfStats.CPU; cpu != nil {
monitoring.ReportNamespace(V, "cpu", func() {
if cpu.ID != "" {
monitoring.ReportString(V, "id", cpu.ID)
}
monitoring.ReportNamespace(V, "cfs", func() {
monitoring.ReportNamespace(V, "period", func() {
monitoring.ReportInt(V, "us", int64(cpu.CFS.PeriodMicros))
})
monitoring.ReportNamespace(V, "quota", func() {
monitoring.ReportInt(V, "us", int64(cpu.CFS.QuotaMicros))
})
})
monitoring.ReportNamespace(V, "stats", func() {
monitoring.ReportInt(V, "periods", int64(cpu.Stats.Periods))
monitoring.ReportNamespace(V, "throttled", func() {
monitoring.ReportInt(V, "periods", int64(cpu.Stats.ThrottledPeriods))
monitoring.ReportInt(V, "ns", int64(cpu.Stats.ThrottledTimeNanos))
})
})
})
}

if cpuacct := selfStats.CPUAccounting; cpuacct != nil {
monitoring.ReportNamespace(V, "cpuacct", func() {
if cpuacct.ID != "" {
monitoring.ReportString(V, "id", cpuacct.ID)
}
monitoring.ReportNamespace(V, "total", func() {
monitoring.ReportInt(V, "ns", int64(cpuacct.TotalNanos))
})
})
}

if memory := selfStats.Memory; memory != nil {
monitoring.ReportNamespace(V, "memory", func() {
if memory.ID != "" {
monitoring.ReportString(V, "id", memory.ID)
}
monitoring.ReportNamespace(V, "mem", func() {
monitoring.ReportNamespace(V, "limit", func() {
monitoring.ReportInt(V, "bytes", int64(memory.Mem.Limit))
})
monitoring.ReportNamespace(V, "usage", func() {
monitoring.ReportInt(V, "bytes", int64(memory.Mem.Usage))
})
})
})
}
}