mirror of
https://github.com/kubernetes/node-problem-detector.git
synced 2026-08-20 04:36:41 +00:00
Xuewei Zhang
4944ac3e48
Host collector report three things today: 1. Host OS uptime (in seconds) 2. Host kernel version (as a metric label) 3. Host OS version (as a metric label)
91 lines
2.5 KiB
Go
91 lines
2.5 KiB
Go
/*
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Copyright 2019 The Kubernetes Authors All rights reserved.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package systemstatsmonitor
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import (
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"context"
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"github.com/golang/glog"
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"github.com/shirou/gopsutil/host"
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"go.opencensus.io/stats"
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"go.opencensus.io/stats/view"
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"go.opencensus.io/tag"
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ssmtypes "k8s.io/node-problem-detector/pkg/systemstatsmonitor/types"
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"k8s.io/node-problem-detector/pkg/util"
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"k8s.io/node-problem-detector/pkg/util/metrics"
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)
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type hostCollector struct {
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tags []tag.Mutator
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uptime *stats.Int64Measure
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}
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func NewHostCollectorOrDie(hostConfig *ssmtypes.HostStatsConfig) *hostCollector {
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hc := hostCollector{}
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keyKernelVersion, err := tag.NewKey("kernel_version")
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if err != nil {
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glog.Fatalf("Failed to create kernel_version tag during initializing host collector: %v", err)
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}
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kernelVersion, err := host.KernelVersion()
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if err != nil {
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glog.Fatalf("Failed to retrieve kernel version: %v", err)
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}
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hc.tags = append(hc.tags, tag.Upsert(keyKernelVersion, kernelVersion))
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keyOSVersion, err := tag.NewKey("os_version")
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if err != nil {
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glog.Fatalf("Failed to create os_version tag during initializing host collector: %v", err)
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}
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osVersion, err := util.GetOSVersion()
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if err != nil {
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glog.Fatalf("Failed to retrieve OS version: %v", err)
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}
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hc.tags = append(hc.tags, tag.Upsert(keyOSVersion, osVersion))
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if hostConfig.MetricsConfigs["host/uptime"].DisplayName != "" {
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hc.uptime = metrics.NewInt64Metric(
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hostConfig.MetricsConfigs["host/uptime"].DisplayName,
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"The uptime of the operating system",
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"second",
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view.LastValue(),
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[]tag.Key{keyKernelVersion, keyOSVersion})
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}
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return &hc
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}
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func (hc *hostCollector) collect() {
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if hc == nil {
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return
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}
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uptime, err := host.Uptime()
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if err != nil {
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glog.Errorf("Failed to retrieve uptime of the host: %v", err)
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return
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}
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if hc.uptime != nil {
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err := stats.RecordWithTags(context.Background(), hc.tags, hc.uptime.M(int64(uptime)))
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if err != nil {
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glog.Errorf("Failed to record current uptime (%d seconds) of the host: %v", uptime, err)
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}
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}
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}
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