Merge pull request #74 from backguynn/main

Delete the lb rule only when the SIGTERM signal is received.

cmd/loxilb-agent/agent.go

@@ -42,6 +42,7 @@ import (
 // https://github.com/kubernetes/kubernetes/blob/release-1.17/pkg/controller/apis/config/v1alpha1/defaults.go#L120
 const informerDefaultResync = 12 * time.Hour
 
+var closeSig os.Signal
 var (
 	capturedSignals = []os.Signal{syscall.SIGTERM, syscall.SIGINT, syscall.SIGQUIT}
 	notifyCh        = make(chan os.Signal, 2)
@@ -195,7 +196,10 @@ func run(o *Options) error {
 
 	<-stopCh
 
-	lbManager.DeleteAllLoadBalancer()
+	if closeSig == syscall.SIGTERM {
+		klog.Info("flushing LoxiLB rules")
+		lbManager.DeleteAllLoadBalancer()
+	}
 
 	klog.Info("Stopping loxilb Agent")
 	return nil
@@ -205,7 +209,7 @@ func RegisterSignalHandlers() <-chan struct{} {
 	stopCh := make(chan struct{})
 
 	go func() {
-		<-notifyCh
+		closeSig = <-notifyCh
 		close(stopCh)
 		<-notifyCh
 		klog.Warning("Received second signal, will force exit")