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Add cgroup summary collector (#2408)
* add cgroups summary collector Signed-off-by: biello <bellusa@qq.com> Co-authored-by: bielu <bielu@zuoyebang.com>
This commit is contained in:
Kobe Biello
GitHub
parent
279ac3ada2
commit
45c75f1dbc
65
collector/cgroups_linux.go
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65
collector/cgroups_linux.go
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@ -0,0 +1,65 @@
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// Copyright 2022 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//go:build !nostat
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// +build !nostat
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package collector
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import (
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"fmt"
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"strconv"
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"github.com/go-kit/log"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/procfs"
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)
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type cgroupSummaryCollector struct {
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fs procfs.FS
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cgroups *prometheus.Desc
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logger log.Logger
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}
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func init() {
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registerCollector("cgroupSummary", defaultEnabled, NewCgroupSummaryCollector)
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}
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// NewCgroupSummaryCollector returns a new Collector exposing a summary of cgroups.
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func NewCgroupSummaryCollector(logger log.Logger) (Collector, error) {
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fs, err := procfs.NewFS(*procPath)
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if err != nil {
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return nil, fmt.Errorf("failed to open procfs: %w", err)
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}
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return &cgroupSummaryCollector{
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fs: fs,
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cgroups: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, "", "cgroups_total"),
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"Current cgroup number of the subsystem.",
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[]string{"subsys_name", "enabled"}, nil,
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),
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logger: logger,
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}, nil
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}
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// Update implements Collector and exposes cgroup statistics.
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func (c *cgroupSummaryCollector) Update(ch chan<- prometheus.Metric) error {
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cgroupSummarys, err := c.fs.CgroupSummarys()
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if err != nil {
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return err
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}
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for _, cs := range cgroupSummarys {
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ch <- prometheus.MustNewConstMetric(c.cgroups, prometheus.CounterValue, float64(cs.Cgroups), cs.SubsysName, strconv.Itoa(cs.Enabled))
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}
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return nil
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}
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@ -296,6 +296,20 @@ node_buddyinfo_blocks{node="0",size="8",zone="Normal"} 0
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node_buddyinfo_blocks{node="0",size="9",zone="DMA"} 1
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node_buddyinfo_blocks{node="0",size="9",zone="DMA32"} 0
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node_buddyinfo_blocks{node="0",size="9",zone="Normal"} 0
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# HELP node_cgroups_total Current cgroup number of the subsystem.
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# TYPE node_cgroups_total counter
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node_cgroups_total{enabled="1",subsys_name="blkio"} 170
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node_cgroups_total{enabled="1",subsys_name="cpu"} 172
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node_cgroups_total{enabled="1",subsys_name="cpuacct"} 172
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node_cgroups_total{enabled="1",subsys_name="cpuset"} 47
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node_cgroups_total{enabled="1",subsys_name="devices"} 170
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node_cgroups_total{enabled="1",subsys_name="freezer"} 47
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node_cgroups_total{enabled="1",subsys_name="hugetlb"} 47
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node_cgroups_total{enabled="1",subsys_name="memory"} 234
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node_cgroups_total{enabled="1",subsys_name="net_cls"} 47
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node_cgroups_total{enabled="1",subsys_name="perf_event"} 47
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node_cgroups_total{enabled="1",subsys_name="pids"} 170
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node_cgroups_total{enabled="1",subsys_name="rdma"} 1
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# HELP node_context_switches_total Total number of context switches.
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# TYPE node_context_switches_total counter
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node_context_switches_total 3.8014093e+07
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@ -3031,6 +3045,7 @@ node_scrape_collector_success{collector="bcache"} 1
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node_scrape_collector_success{collector="bonding"} 1
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node_scrape_collector_success{collector="btrfs"} 1
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node_scrape_collector_success{collector="buddyinfo"} 1
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node_scrape_collector_success{collector="cgroupSummary"} 1
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node_scrape_collector_success{collector="conntrack"} 1
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node_scrape_collector_success{collector="cpu"} 1
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node_scrape_collector_success{collector="cpufreq"} 1
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13
collector/fixtures/proc/cgroups
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13
collector/fixtures/proc/cgroups
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#subsys_name hierarchy num_cgroups enabled
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cpuset 5 47 1
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cpu 3 172 1
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cpuacct 3 172 1
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blkio 6 170 1
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memory 7 234 1
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devices 11 170 1
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freezer 9 47 1
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net_cls 2 47 1
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perf_event 8 47 1
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hugetlb 12 47 1
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pids 10 170 1
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rdma 4 1 1
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2
go.mod
2
go.mod
@ -20,7 +20,7 @@ require (
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github.com/prometheus/client_model v0.2.0
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github.com/prometheus/common v0.33.0
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github.com/prometheus/exporter-toolkit v0.7.1
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github.com/prometheus/procfs v0.7.4-0.20211011103944-1a7a2bd3279f
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github.com/prometheus/procfs v0.7.4-0.20211209105546-0f8a320e1e1f
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github.com/safchain/ethtool v0.2.0
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github.com/soundcloud/go-runit v0.0.0-20150630195641-06ad41a06c4a
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golang.org/x/sys v0.0.0-20220330033206-e17cdc41300f
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4
go.sum
4
go.sum
@ -235,8 +235,8 @@ github.com/prometheus/procfs v0.0.2/go.mod h1:TjEm7ze935MbeOT/UhFTIMYKhuLP4wbCsT
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github.com/prometheus/procfs v0.1.3/go.mod h1:lV6e/gmhEcM9IjHGsFOCxxuZ+z1YqCvr4OA4YeYWdaU=
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github.com/prometheus/procfs v0.6.0/go.mod h1:cz+aTbrPOrUb4q7XlbU9ygM+/jj0fzG6c1xBZuNvfVA=
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github.com/prometheus/procfs v0.7.3/go.mod h1:cz+aTbrPOrUb4q7XlbU9ygM+/jj0fzG6c1xBZuNvfVA=
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github.com/prometheus/procfs v0.7.4-0.20211011103944-1a7a2bd3279f h1:ncXqc93eJV1Ncr3f6GA3MrIDNkNHvcPonRC2QgZaVkQ=
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github.com/prometheus/procfs v0.7.4-0.20211011103944-1a7a2bd3279f/go.mod h1:cz+aTbrPOrUb4q7XlbU9ygM+/jj0fzG6c1xBZuNvfVA=
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github.com/prometheus/procfs v0.7.4-0.20211209105546-0f8a320e1e1f h1:tg+5gOV1AkhTfWNi94UA5rvn+Mat/thyB2WASYAzPZo=
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github.com/prometheus/procfs v0.7.4-0.20211209105546-0f8a320e1e1f/go.mod h1:cz+aTbrPOrUb4q7XlbU9ygM+/jj0fzG6c1xBZuNvfVA=
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github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
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github.com/rogpeppe/go-internal v1.6.1 h1:/FiVV8dS/e+YqF2JvO3yXRFbBLTIuSDkuC7aBOAvL+k=
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github.com/rogpeppe/go-internal v1.6.1/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTEfhy4qGm1nDQc=
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