I'm current trying deploy an application to connect the rabbitmq.

The application and rabbitmq are on different pod on the same cluster node.

And I can not connect to rabbitMQ via servicename or cluster IP.

Do you have any idea about this problem?

The exeception on app

None of the specified endpoints were reachable

Here is rabbitmq_deployment.yaml

 apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: rabbitmq
   namespace: test
 spec:
   selector:
     matchLabels:
       run: rabbitmq
   replicas: 1
   template:
     metadata:
       labels:
         run: rabbitmq
     spec:
       containers:
       - name: rabbitmq
         image: rabbitmq_delay_v3.7
         imagePullPolicy: IfNotPresent
 ---
 apiVersion: v1
 kind: Service
 metadata:
   name: rabbitmq-svc
   namespace: test
   labels:
     run: rabbitmq
 spec:
   type: NodePort
   ports:
   - name: rabbit-web
     protocol: TCP
     port: 15672
     targetPort: 15672
     nodePort: 30000
   - name: rabbit-svc
     protocol: TCP
     port: 5672
     targetPort: 5672
   selector:
     run: rabbitmq

Here is app_deployment.yaml

    apiVersion: apps/v1
    kind: Deployment
    metadata:
      name: app_test
      namespace: test
    spec:
      selector:
        matchLabels:
          run: app_test
      replicas: 1
      template:
        metadata:
          labels:
            run: app_test
        spec:
          containers:
          - name: app1
            image: my_app_image
            imagePullPolicy: IfNotPresent
            env:
              - name: "ASPNETCORE_ENVIRONMENT"
                value: "Staging"
    ---
    apiVersion: v1
    kind: Service
    metadata:
      name: app-test-svc
      namespace: test
      labels:
        run: app-test
    spec:
      type: NodePort
      ports:
      - name: app_test_port
        protocol: TCP
        port: 80
        targetPort: 80
        nodePort: 30203
      selector:
        run: app_test

And here is config to connect rabbitmq on app

"QueueConfig": {
        "HostName": "rabbitmq-svc",
        "UserName": "guest",
        "Pwd": "guest",
        "VirtualHost": "/",
        "Port": 5672,
}

Here is output of kubectl -n test describe avc rabbitmq-svc

  Name:                     rabbitmq-svc
  Namespace:                test
  Labels:                   run=rabbitmq
  Annotations:              Selector:  run=rabbitmq
  Type:                     NodePort
  IP:                       10.103.189.233
  Port:                     rabbit-web  15672/TCP
  TargetPort:               15672/TCP
  NodePort:                 rabbit-web  30000/TCP
  Endpoints:                10.244.1.174:15672
  Port:                     rabbit-svc  5672/TCP
  TargetPort:               5672/TCP
  NodePort:                 rabbit-svc  31425/TCP
  Endpoints:                10.244.1.174:5672
  Session Affinity:         None
  External Traffic Policy:  Cluster
  Events:                   <none>

Here is output of kubectl get pods -n kube-system

NAME                                  READY   STATUS    RESTARTS   AGE
coredns-66bff467f8-j8494              1/1     Running   1          7d9h
coredns-66bff467f8-jtn5w              1/1     Running   1          7d9h
etcd-master-node                      1/1     Running   1          7d9h
kube-apiserver-master-node            1/1     Running   1          7d9h
kube-controller-manager-master-node   1/1     Running   1          7d9h
kube-flannel-ds-amd64-8gd7b           1/1     Running   1          7d9h
kube-flannel-ds-amd64-xj2hw           1/1     Running   1          7d8h
kube-proxy-62wsz                      1/1     Running   1          7d9h
kube-proxy-77g2d                      1/1     Running   0          7d8h
kube-scheduler-master-node            1/1     Running   1          7d9h