openimsdk/open-im-server · error

service %s has no ports defined

Error message

service %s has no ports defined

What it means

After fetching the Service, getServicePort requires at least one port in svc.Spec.Ports. A Service with no ports cannot expose gRPC endpoints, so the lookup fails with this message. This is a Service manifest problem, not an API problem.

Source

Thrown at pkg/common/discovery/kubernetes/kubernetes.go:225

func (k *KubernetesConnManager) UnRegister() error {
	return nil
}

func (k *KubernetesConnManager) GetUserIdHashGatewayHost(ctx context.Context, userId string) (string, error) {
	return "", nil
}

func (k *KubernetesConnManager) getServicePort(serviceName string) (int32, error) {
	var svcPort int32

	svc, err := k.clientset.CoreV1().Services(k.namespace).Get(context.Background(), serviceName, metav1.GetOptions{})
	if err != nil {
		fmt.Print("namespace:", k.namespace)
		return 0, fmt.Errorf("failed to get service %s: %v", serviceName, err)
	}

	if len(svc.Spec.Ports) == 0 {
		return 0, fmt.Errorf("service %s has no ports defined", serviceName)
	}

	for _, port := range svc.Spec.Ports {
		// fmt.Println(serviceName, " Now Get Port:", port.Port)
		if port.Port != 10001 {
			svcPort = port.Port
			break
		}
	}

	return svcPort, nil
}

// watchEndpoints listens for changes in Pod resources.
func (k *KubernetesConnManager) watchEndpoints() {
	informerFactory := informers.NewSharedInformerFactory(k.clientset, time.Minute*10)
	informer := informerFactory.Core().V1().Pods().Informer()

View on GitHub (pinned to 175a7bb067)

Solutions

1. Add a ports section to the Service manifest mapping the gRPC container port (e.g. port 10001 or the app port).
2. Redeploy/patch: kubectl patch svc <name> -p '{"spec":{"ports":[{"port":10001,"targetPort":10001}]}}'.
3. Confirm the right Service is selected — a similarly named placeholder Service may be shadowing the real one.

Example fix

// before (Service yaml)
spec:
  selector:
    app: my-rpc
// after
spec:
  selector:
    app: my-rpc
  ports:
    - port: 10001
      targetPort: 10001

svc, _ := clientset.CoreV1().Services(ns).Get(ctx, svcName, metav1.GetOptions{})
if len(svc.Spec.Ports) == 0 {
    return errors.New("service manifest has no ports")
}

When it happens

Trigger: getServicePort reads a Service whose Spec.Ports is empty — the Service object exists but defines no port mappings.

Common situations: Hand-written or templated Service manifest missing the ports section; ExternalName/headless services created without ports; applying a stripped-down Service for metric-only exposure.

Related errors

• failed to create in-cluster config: %v
• failed to create clientset: %v
• config field %s %s not found
• no command to run
• standalone api port is 0

AI-assisted analysis of openimsdk/open-im-server@175a7bb067 (2026-09-04). Data as JSON: /api/errors/7e785594250e40c6. Report an issue: GitHub.