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rabbitmq dashboard is not accessible from kubernetes cluster

5/21/2019

kubernetes cluster is running on two nodes. one master , one worker ... weave net is pod network.

[root@irf-centos1 ~]# kubectl cluster-info
Kubernetes master is running at https://10.8.156.184:6443
KubeDNS is running at https://10.8.156.184:6443/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy

To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'.

have deployed the rabbit docker image as container in kubernetes pod.

[root@irf-centos1 ~]# kubectl get pods
NAME                        READY   STATUS    RESTARTS   AGE
rabbitmq-86bd97fd9d-8h444   1/1     Running   0          51m
rabbitmq-86bd97fd9d-n2kgk   1/1     Running   0          51m

following are the service and deployment yaml file

deployment file

---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: rabbitmq
spec:
  replicas: 2
  template:
    metadata:
      labels:
        app: rabbitmqapp
    spec:
      containers:
        -
          image: "docker.io/rabbitmq:latest"
          imagePullPolicy: Always
          name: rabbitmq
          ports:
            -
              containerPort: 5672
              name: http-port
          volumeMounts:
            -
              mountPath: /var/rabbitmqapp_home
              name: rabbitmqapp-home
      volumes:
        -
          emptyDir: {}
          name: rabbitmqapp-home

service file

---
apiVersion: v1
kind: Service
metadata:
  name: rabbitmq
  namespace: default
spec:
  ports:
    -
      port: 5672
      targetPort: 5672
      protocol: TCP
      nodePort: 31111
  selector:
    app: rabbitmqapp
  type: NodePort

here are the services and deployment details

[root@irf-centos1 ~]# kubectl get deployments
NAME       READY   UP-TO-DATE   AVAILABLE   AGE
rabbitmq   2/2     2            2           55m


[root@irf-centos1 ~]# kubectl get services
NAME         TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)          AGE
kubernetes   ClusterIP   10.96.0.1      <none>        443/TCP          3d
rabbitmq     NodePort    10.98.204.64   <none>        5672:31111/TCP   55m

now, when i am trying to hit the rabbitmq dashboard/UI on the node port. it is not accessible

[root@irf-centos1 ~]# curl http://10.8.156.187:31111
curl: (56) Recv failure: Connection reset by peer
AMQP    [root@irf-centos1 ~]#

when i hit the same URL from the web browser, nothing is happening

please suggest

NOTE: this cluster is deployed using kubeadm on AZure VMs. for troubleshooting purpose, i have opened all inbound/outbound ports on these VMs so that , it should not be a firewall , port blocking issue.

Edit 1:

I modified the service file as follows and redeployed the same. PSB

---
apiVersion: v1
kind: Service
metadata:
  name: rabbitmq
  namespace: default
spec:
  ports:
    - name: ui
      protocol: TCP
      port: 15672
      targetPort: 15672
      nodePort: 31112
    - name: service
      port: 5672
      targetPort: 5672
      protocol: TCP
      nodePort: 31111
  selector:
    app: rabbitmq
  type: NodePort

still getting the same error

[root@irf-centos1 ~]# curl -I http://guest:guest@10.8.156.187:31111/api/users
curl: (56) Recv failure: Connection reset by peer
AMQP    [root@irf-centos1 ~]# curl -I http://guest:guest@10.8.156.187:31112/api/users
curl: (7) Failed connect to 10.8.156.187:31112; Connection refused

-- user2315104

docker

kubernetes

rabbitmq

2 Answers

5/21/2019

Actually, was using the wrong docker image ... for rabbitmq dashbaord, the docker image should be docker:management. i changed that and it worked.

here is the updated service and deployment yaml file :

---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: rabbitmq
spec:
  replicas: 2
  template:
    metadata:
      labels:
        app: rabbitmq
    spec:
      containers:
        -
          image: "docker.io/rabbitmq:management"
          imagePullPolicy: Always
          name: rabbitmq
          ports:
            -
              containerPort: 15672
              name: http-port
          volumeMounts:
            -
              mountPath: /var/rabbitmqapp_home
              name: rabbitmqapp-home
      volumes:
        -
          emptyDir: {}
          name: rabbitmqapp-home

service yaml file :

---
apiVersion: v1
kind: Service
metadata:
  name: rabbitmq
  namespace: default
spec:
  ports:
    - name: ui
      protocol: TCP
      port: 15672
      targetPort: 15672
      nodePort: 31112
    - name: service
      port: 5672
      targetPort: 5672
      protocol: TCP
      nodePort: 31111
  selector:
    app: rabbitmq
  type: NodePort

-- user2315104

Source: StackOverflow

5/21/2019

For rabbitmq dashboard/UI, it's running on : 15672

So port number in service file should be included : 15672

Then access to dashboard/UI create user for application. then curl using this user.

---
apiVersion: v1
kind: Service
metadata:
  name: rabbitmq
  namespace: default
spec:
  ports:
    -
      port: 5672
      targetPort: 5672
      protocol: TCP
      nodePort: 31111
    - 
      protocol: TCP
      port: 15672
      targetPort: 15672
      nodePort: 31112

  selector:
    app: rabbitmqapp
  type: NodePort

Or using default username & password guest of rabitmq:

curl -I http://guest:guest@10.8.156.187:31112/api/users

Deployment file add containerPort:

      image: "docker.io/rabbitmq:latest"
      imagePullPolicy: Always
      name: rabbitmq
      ports:
        -
          containerPort: 5672
          name: http-port
          containerPort: 15672
          name: ui-port

-- Thanh Nguyen Van

Source: StackOverflow

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rabbitmq dashboard is not accessible from kubernetes cluster

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