Merge pull request kubernetes#90243 from soltysh/issue90074

Revert "stop defaulting kubeconfig to http://localhost:8080"

Author: k8s-ci-robot

staging/src/k8s.io/client-go/tools/clientcmd/client_config.go

@@ -35,14 +35,23 @@ import (
 var (
 	// ClusterDefaults has the same behavior as the old EnvVar and DefaultCluster fields
 	// DEPRECATED will be replaced
-	ClusterDefaults = clientcmdapi.Cluster{Server: os.Getenv("KUBERNETES_MASTER")}
+	ClusterDefaults = clientcmdapi.Cluster{Server: getDefaultServer()}
 	// DefaultClientConfig represents the legacy behavior of this package for defaulting
 	// DEPRECATED will be replace
 	DefaultClientConfig = DirectClientConfig{*clientcmdapi.NewConfig(), "", &ConfigOverrides{
 		ClusterDefaults: ClusterDefaults,
 	}, nil, NewDefaultClientConfigLoadingRules(), promptedCredentials{}}
 )
 
+// getDefaultServer returns a default setting for DefaultClientConfig
+// DEPRECATED
+func getDefaultServer() string {
+	if server := os.Getenv("KUBERNETES_MASTER"); len(server) > 0 {
+		return server
+	}
+	return "http://localhost:8080"
+}
+
 // ClientConfig is used to make it easy to get an api server client
 type ClientConfig interface {
 	// RawConfig returns the merged result of all overrides

staging/src/k8s.io/kubectl/pkg/cmd/version/BUILD

@@ -27,6 +27,7 @@ go_test(
     deps = [
         "//staging/src/k8s.io/cli-runtime/pkg/genericclioptions:go_default_library",
         "//staging/src/k8s.io/kubectl/pkg/cmd/util:go_default_library",
+        "//vendor/github.com/spf13/cobra:go_default_library",
     ],
 )
 

staging/src/k8s.io/kubectl/pkg/cmd/version/version_test.go

@@ -20,16 +20,26 @@ import (
 	"strings"
 	"testing"
 
+	"github.com/spf13/cobra"
+
 	"k8s.io/cli-runtime/pkg/genericclioptions"
 	cmdutil "k8s.io/kubectl/pkg/cmd/util"
 )
 
 func TestNewCmdVersionWithoutConfigFile(t *testing.T) {
 	tf := cmdutil.NewFactory(&genericclioptions.ConfigFlags{})
 	streams, _, buf, _ := genericclioptions.NewTestIOStreams()
-	cmd := NewCmdVersion(tf, streams)
-	cmd.SetOutput(buf)
-	if err := cmd.Execute(); err != nil {
+	o := NewOptions(streams)
+	if err := o.Complete(tf, &cobra.Command{}); err != nil {
+		t.Errorf("Unexpected error: %v", err)
+	}
+	if err := o.Validate(); err != nil {
+		t.Errorf("Unexpected error: %v", err)
+	}
+	// FIXME soltysh:
+	// since we have defaulting to localhost:8080 in staging/src/k8s.io/client-go/tools/clientcmd/client_config.go#getDefaultServer
+	// we need to ignore the localhost:8080 server, when above gets removed this should be dropped too
+	if err := o.Run(); err != nil && !strings.Contains(err.Error(), "localhost:8080") {
 		t.Errorf("Cannot execute version command: %v", err)
 	}
 	if !strings.Contains(buf.String(), "Client Version") {

test/cmd/legacy-script.sh

@@ -324,7 +324,6 @@ runTests() {
     exit 1
   fi
   kube::log::status "Checking kubectl version"
-  export KUBERNETES_MASTER=http://127.0.0.1:${API_PORT}
   kubectl version
 
   # Generate a random namespace name, based on the current time (to make