Change tunnel cleanup flag default to true

cmd/minikube/cmd/tunnel.go

@@ -57,7 +57,6 @@ var tunnelCmd = &cobra.Command{
 			if err := manager.CleanupNotRunningTunnels(); err != nil {
 				glog.Errorf("error cleaning up: %s", err)
 			}
-			return
 		}
 
 		// Tunnel uses the k8s clientset to query the API server for services in the LoadBalancerEmulator.
@@ -104,5 +103,5 @@ var tunnelCmd = &cobra.Command{
 }
 
 func init() {
-	tunnelCmd.Flags().BoolVarP(&cleanup, "cleanup", "c", false, "call with cleanup=true to remove old tunnels")
+	tunnelCmd.Flags().BoolVarP(&cleanup, "cleanup", "c", true, "call with cleanup=true to remove old tunnels")
 }

site/content/en/docs/commands/tunnel.md

@@ -21,7 +21,7 @@ minikube tunnel [flags]
 ### Options
 
 ```
-  -c, --cleanup   call with cleanup=true to remove old tunnels
+  -c, --cleanup   call with cleanup=true to remove old tunnels (default true)
   -h, --help      help for tunnel
 ```
 

site/content/en/docs/handbook/accessing.md

@@ -131,6 +131,8 @@ If the `minikube tunnel` shuts down in an abrupt manner, it may leave orphaned n
 minikube tunnel --cleanup
 ````
 
+NOTE: `--cleanup` flag's default value is `true`.
+
 ### Avoiding password prompts
 
 Adding a route requires root privileges for the user, and thus there are differences in how to run `minikube tunnel` depending on the OS. If you want to avoid entering the root password, consider setting NOPASSWD for "ip" and "route" commands: