mirror of
https://github.com/kubernetes/node-problem-detector.git
synced 2026-02-19 04:20:19 +00:00
91 lines
2.4 KiB
Go
91 lines
2.4 KiB
Go
/*
|
|
Copyright 2016 The Kubernetes Authors All rights reserved.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package main
|
|
|
|
import (
|
|
"net"
|
|
"net/http"
|
|
_ "net/http/pprof"
|
|
"os"
|
|
"strconv"
|
|
|
|
"github.com/golang/glog"
|
|
"github.com/spf13/pflag"
|
|
|
|
"k8s.io/node-problem-detector/cmd/options"
|
|
"k8s.io/node-problem-detector/pkg/problemclient"
|
|
"k8s.io/node-problem-detector/pkg/problemdetector"
|
|
"k8s.io/node-problem-detector/pkg/systemlogmonitor"
|
|
"k8s.io/node-problem-detector/pkg/version"
|
|
)
|
|
|
|
func startHTTPServer(p problemdetector.ProblemDetector, npdo *options.NodeProblemDetectorOptions) {
|
|
// Add healthz http request handler. Always return ok now, add more health check
|
|
// logic in the future.
|
|
http.HandleFunc("/healthz", func(w http.ResponseWriter, r *http.Request) {
|
|
w.WriteHeader(http.StatusOK)
|
|
w.Write([]byte("ok"))
|
|
})
|
|
// Add the http handlers in problem detector.
|
|
p.RegisterHTTPHandlers()
|
|
|
|
addr := net.JoinHostPort(npdo.ServerAddress, strconv.Itoa(npdo.ServerPort))
|
|
go func() {
|
|
err := http.ListenAndServe(addr, nil)
|
|
if err != nil {
|
|
glog.Fatalf("Failed to start server: %v", err)
|
|
}
|
|
}()
|
|
}
|
|
|
|
func main() {
|
|
npdo := options.NewNodeProblemDetectorOptions()
|
|
npdo.AddFlags(pflag.CommandLine)
|
|
|
|
pflag.Parse()
|
|
|
|
npdo.SetNodeNameOrDie()
|
|
|
|
npdo.ValidOrDie()
|
|
|
|
if npdo.PrintVersion {
|
|
version.PrintVersion()
|
|
os.Exit(0)
|
|
}
|
|
|
|
monitors := make(map[string]systemlogmonitor.LogMonitor)
|
|
for _, config := range npdo.SystemLogMonitorConfigPaths {
|
|
if _, ok := monitors[config]; ok {
|
|
// Skip the config if it's duplictaed.
|
|
glog.Warningf("Duplicated log monitor configuration %q", config)
|
|
continue
|
|
}
|
|
monitors[config] = systemlogmonitor.NewLogMonitorOrDie(config)
|
|
}
|
|
c := problemclient.NewClientOrDie(npdo)
|
|
p := problemdetector.NewProblemDetector(monitors, c)
|
|
|
|
// Start http server.
|
|
if npdo.ServerPort > 0 {
|
|
startHTTPServer(p, npdo)
|
|
}
|
|
|
|
if err := p.Run(); err != nil {
|
|
glog.Fatalf("Problem detector failed with error: %v", err)
|
|
}
|
|
}
|