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Expose /metrics and /debug/pprof from kube-proxy

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This commit is contained in:
Wojciech Tyczynski
2017-05-16 12:59:26 +02:00
parent 26f00c66db
commit e35b1c21a1
4 changed files with 23 additions and 5 deletions
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20
cmd/kube-proxy/app/server.go
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@@ -24,7 +24,7 @@ import (
"io/ioutil"
"net"
"net/http"
_ "net/http/pprof"
"net/http/pprof"
"runtime"
"strings"
"time"
@@ -146,6 +146,7 @@ func AddFlags(options *Options, fs *pflag.FlagSet) {
&options.config.Conntrack.TCPCloseWaitTimeout.Duration, "conntrack-tcp-timeout-close-wait",
options.config.Conntrack.TCPCloseWaitTimeout.Duration,
"NAT timeout for TCP connections in the CLOSE_WAIT state")
fs.BoolVar(&options.config.EnableProfiling, "profiling", options.config.EnableProfiling, "If true enables profiling via web interface on /debug/pprof handler.")
utilfeature.DefaultFeatureGate.AddFlag(fs)
}
@@ -298,6 +299,7 @@ type ProxyServer struct {
NodeRef *clientv1.ObjectReference
CleanupAndExit bool
MetricsBindAddress string
EnableProfiling bool
OOMScoreAdj *int32
ResourceContainer string
ConfigSyncPeriod time.Duration
@@ -507,6 +509,7 @@ func NewProxyServer(config *componentconfig.KubeProxyConfiguration, cleanupAndEx
ProxyMode: proxyMode,
NodeRef: nodeRef,
MetricsBindAddress: config.MetricsBindAddress,
EnableProfiling: config.EnableProfiling,
OOMScoreAdj: config.OOMScoreAdj,
ResourceContainer: config.ResourceContainer,
ConfigSyncPeriod: config.ConfigSyncPeriod.Duration,
@@ -555,13 +558,20 @@ func (s *ProxyServer) Run() error {
// Start up a metrics server if requested
if len(s.MetricsBindAddress) > 0 {
http.HandleFunc("/proxyMode", func(w http.ResponseWriter, r *http.Request) {
mux := http.NewServeMux()
mux.HandleFunc("/proxyMode", func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "%s", s.ProxyMode)
})
http.Handle("/metrics", prometheus.Handler())
configz.InstallHandler(http.DefaultServeMux)
mux.Handle("/metrics", prometheus.Handler())
if s.EnableProfiling {
mux.HandleFunc("/debug/pprof/", pprof.Index)
mux.HandleFunc("/debug/pprof/profile", pprof.Profile)
mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
mux.HandleFunc("/debug/pprof/trace", pprof.Trace)
}
configz.InstallHandler(mux)
go wait.Until(func() {
err := http.ListenAndServe(s.MetricsBindAddress, nil)
err := http.ListenAndServe(s.MetricsBindAddress, mux)
if err != nil {
utilruntime.HandleError(fmt.Errorf("starting metrics server failed: %v", err))
}