mirror of
https://github.com/kubernetes/node-problem-detector.git
synced 2026-03-02 17:50:34 +00:00
82c2368795
1. host/uptime, disk/io_time and disk/weighted_io should be counter/cumulative metrics. SO we have to use the Sum aggregation method rather than LastValue aggregation method (which will declare the metric as gauge metric). 2. Renamed label "device" for disk/* metrics to "device_name". This is to clarify that it is device_name (sda1) rather than device_path (/dev/sda1)
82 lines
2.2 KiB
Go
82 lines
2.2 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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"github.com/golang/glog"
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"github.com/shirou/gopsutil/host"
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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 map[string]string
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uptime *metrics.Int64Metric
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lastUptime int64
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}
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func NewHostCollectorOrDie(hostConfig *ssmtypes.HostStatsConfig) *hostCollector {
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hc := hostCollector{map[string]string{}, nil, 0}
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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["kernel_version"] = kernelVersion
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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["os_version"] = osVersion
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// Use metrics.Sum aggregation method to ensure the metric is a counter/cumulative metric.
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if hostConfig.MetricsConfigs["host/uptime"].DisplayName != "" {
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hc.uptime, err = 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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metrics.Sum,
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[]string{"kernel_version", "os_version"})
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if err != nil {
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glog.Fatalf("Error initializing metric for host/uptime: %v", err)
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}
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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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uptimeSeconds := int64(uptime)
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if hc.uptime != nil {
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hc.uptime.Record(hc.tags, uptimeSeconds-hc.lastUptime)
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}
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hc.lastUptime = uptimeSeconds
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}
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