Merge pull request #8337 from taciomcosta/master

exit when minikube addons configure is called on a nonexistent cluster

cmd/minikube/cmd/config/configure.go

@@ -23,6 +23,7 @@ import (
 	"github.com/spf13/cobra"
 	"k8s.io/minikube/pkg/minikube/config"
 	"k8s.io/minikube/pkg/minikube/exit"
+	"k8s.io/minikube/pkg/minikube/mustload"
 	"k8s.io/minikube/pkg/minikube/out"
 	"k8s.io/minikube/pkg/minikube/service"
 )
@@ -188,10 +189,7 @@ var addonsConfigureCmd = &cobra.Command{
 
 		case "metallb":
 			profile := ClusterFlagValue()
-			cfg, err := config.Load(profile)
-			if err != nil {
-				out.ErrT(out.FatalType, "Failed to load config {{.profile}}", out.V{"profile": profile})
-			}
+			_, cfg := mustload.Partial(profile)
 
 			validator := func(s string) bool {
 				return net.ParseIP(s) != nil
@@ -205,8 +203,7 @@ var addonsConfigureCmd = &cobra.Command{
 				cfg.KubernetesConfig.LoadBalancerEndIP = AskForStaticValidatedValue("-- Enter Load Balancer End IP: ", validator)
 			}
 
-			err = config.SaveProfile(profile, cfg)
-			if err != nil {
+			if err := config.SaveProfile(profile, cfg); err != nil {
 				out.ErrT(out.FatalType, "Failed to save config {{.profile}}", out.V{"profile": profile})
 			}