feat: add flags --kubeconfig-json (#694)

pkg/config/config.yaml

@@ -4,6 +4,7 @@
 # Just keep simple
 
 Name: dev
+Description: This is dev k8s environment, needs jump by qa env
 Needs: qa
 Flags:
   - connect
@@ -13,6 +14,7 @@ Flags:
 ---
 
 Name: qa
+Description: This is QA k8s environment
 Flags:
   - connect
   - --kubeconfig=~/.kube/jumper_config

pkg/util/ns.go

@@ -152,6 +152,26 @@ func ConvertToTempKubeconfigFile(kubeconfigBytes []byte) (string, error) {
 	return temp.Name(), nil
 }
 
+func ConvertToKubeconfigFile(kubeconfigBytes []byte, filename string) (string, error) {
+	f, err := os.Create(filename)
+	if err != nil {
+		return "", err
+	}
+	_, err = f.Write(kubeconfigBytes)
+	if err != nil {
+		return "", err
+	}
+	err = f.Chmod(0644)
+	if err != nil {
+		return "", err
+	}
+	err = f.Close()
+	if err != nil {
+		return "", err
+	}
+	return f.Name(), nil
+}
+
 func containerPathSeparator(pattern string) bool {
 	for i := 0; i < len(pattern); i++ {
 		if os.IsPathSeparator(pattern[i]) {