kube-ovn-monitor and kube-ovn-pinger export pprof path (#3657)

like /debug/pprof/...

Signed-off-by: changluyi <clyi@alauda.io>

cmd/ovn_monitor/ovn_monitor.go

@@ -31,9 +31,9 @@ func CmdMain() {
 		go exporter.TryClientConnection()
 	}
 	exporter.StartOvnMetrics()
-
+	mux := http.NewServeMux()
 	if config.EnableMetrics {
-		http.Handle(config.MetricsPath, promhttp.Handler())
+		mux.Handle(config.MetricsPath, promhttp.Handler())
 		klog.Infoln("Listening on", config.ListenAddress)
 	}
 
@@ -57,6 +57,7 @@ func CmdMain() {
 	server := &http.Server{
 		Addr:              addr,
 		ReadHeaderTimeout: 3 * time.Second,
+		Handler:           mux,
 	}
 	util.LogFatalAndExit(server.ListenAndServe(), "failed to listen and server on %s", config.ListenAddress)
 }

cmd/pinger/pinger.go

@@ -25,14 +25,16 @@ func CmdMain() {
 		util.LogFatalAndExit(err, "failed to parse config")
 	}
 	if config.Mode == "server" && config.EnableMetrics {
-		http.Handle("/metrics", promhttp.Handler())
+		mux := http.NewServeMux()
+		mux.Handle("/metrics", promhttp.Handler())
 
 		go func() {
 			// conform to Gosec G114
 			// https://github.com/securego/gosec#available-rules
 			server := &http.Server{
 				Addr:              fmt.Sprintf("0.0.0.0:%d", config.Port),
 				ReadHeaderTimeout: 3 * time.Second,
+				Handler:           mux,
 			}
 			util.LogFatalAndExit(server.ListenAndServe(), "failed to listen and serve on %s", server.Addr)
 		}()