feat: support targetPort option in goctl kube (#2378)

tools/goctl/kube/cmd.go

@@ -16,6 +16,7 @@ var (
 	varIntRevisions          int
 	varIntPort               int
 	varIntNodePort           int
+	varIntTargetPort         int
 	varIntMinReplicas        int
 	varIntMaxReplicas        int
 	varStringHome            string
@@ -51,6 +52,7 @@ func init() {
 	deployCmd.Flags().IntVar(&varIntRevisions, "revisions", 5, "The number of revision history to limit")
 	deployCmd.Flags().IntVar(&varIntPort, "port", 0, "The port of the deployment to listen on pod (required)")
 	deployCmd.Flags().IntVar(&varIntNodePort, "nodePort", 0, "The nodePort of the deployment to expose")
+	deployCmd.Flags().IntVar(&varIntTargetPort, "targetPort", 0, "The targetPort of the deployment, default to port")
 	deployCmd.Flags().IntVar(&varIntMinReplicas, "minReplicas", 3, "The min replicas to deploy")
 	deployCmd.Flags().IntVar(&varIntMaxReplicas, "maxReplicas", 10, "The max replicas to deploy")
 	deployCmd.Flags().StringVar(&varStringImagePullPolicy, "imagePullPolicy", "", "Image pull policy. One of Always, Never, IfNotPresent")

tools/goctl/kube/deployment.tpl

@@ -59,11 +59,12 @@ metadata:
   namespace: {{.Namespace}}
 spec:
   ports:
-    {{if .UseNodePort}}- nodePort: {{.NodePort}}
-      port: {{.Port}}
-      protocol: TCP
-      targetPort: {{.Port}}
-  type: NodePort{{else}}- port: {{.Port}}{{end}}
+  {{if .UseNodePort}}- nodePort: {{.NodePort}}
+    port: {{.Port}}
+    protocol: TCP
+    targetPort: {{.TargetPort}}
+  type: NodePort{{else}}- port: {{.Port}}
+    targetPort: {{.TargetPort}}{{end}}
   selector:
     app: {{.Name}}
 

tools/goctl/kube/kube.go

@@ -36,6 +36,7 @@ type Deployment struct {
 	Replicas        int
 	Revisions       int
 	Port            int
+	TargetPort      int
 	NodePort        int
 	UseNodePort     bool
 	RequestCpu      int
@@ -81,6 +82,10 @@ func deploymentCommand(_ *cobra.Command, _ []string) error {
 	}
 	defer out.Close()
 
+	if varIntTargetPort == 0 {
+		varIntTargetPort = varIntPort
+	}
+
 	t := template.Must(template.New("deploymentTemplate").Parse(text))
 	err = t.Execute(out, Deployment{
 		Name:            varStringName,
@@ -90,6 +95,7 @@ func deploymentCommand(_ *cobra.Command, _ []string) error {
 		Replicas:        varIntReplicas,
 		Revisions:       varIntRevisions,
 		Port:            varIntPort,
+		TargetPort:      varIntTargetPort,
 		NodePort:        nodePort,
 		UseNodePort:     nodePort > 0,
 		RequestCpu:      varIntRequestCpu,