how to setup basic rabbitmq on kubernetes

If you don't need more than a replica and persistent. You can go with a simple pod deployment rather than sts. Please refer sts doc

kubectl run rabbitmq --image=rabbitmq:management --expose --port=15672 --restart=Never--dry-run -o yaml > rabbitmq.yml

Edit the relevant container ports and create the pod.

kubectl create -f rabbitmq.yml

Expose the service as NodePort.

kubectl expose po rabbitmq --port 15672

Now, you can access it externally via

NodesIP:NodePort

and internally by using,

[svc].[namespace].svc

Use this StatefulSet yaml file for basic rabbitmq instance:

apiVersion: apps/v1beta1kind: StatefulSetmetadata:  name: rabbitmqspec:  replicas: 1  serviceName: rabbitmq  selector:    matchLabels:      app: rabbitmq  template:    metadata:      labels:        app: rabbitmq    spec:      containers:      - name: rabbitmq        image: rabbitmq:3-management        env:        - name: "RABBITMQ_ERLANG_COOKIE"          value: "1WqgH8N2v1qDBDZDbNy8Bg9IkPWLEpu79m6q+0t36lQ="        volumeMounts:        - mountPath: /var/lib/rabbitmq          name: rabbitmq-data      volumes:        - name: rabbitmq-data          hostPath:            path: /data/rabbitmq            type: DirectoryOrCreate

The proper way to do it, is to install rabbitmq via dedicated helm-chart (stable/rabbitmq) with helm (Kubernetes package manager). The main reason for that: this way is thoroughly tested and verified by open source community.

If you want to take a shortcut, please refer to the following task from Kubernetes official website: Starting a message queue service (rabbitmq). You will find there links to all necessary manifest files.