I used the following yaml files to deploy couchbase in kubernetes.

Master:

apiVersion: v1  
kind: ReplicationController  
metadata:  
  name: couchbase-master-rc
spec:  
  replicas: 1  
  selector:  
    app: master-pod  
  template:  
    metadata:  
      labels:  
        app: master-pod  
    spec:  
      containers:  
      - name: couchbase-master  
        image: arungupta/couchbase:k8s 
        env:  
          - name: TYPE  
            value: MASTER  
        ports:  
        - containerPort: 8091 
---
apiVersion: v1  
kind: Service  
metadata:   
  name: couchbase-master-service  
  labels:   
    app: couchbase-master-service  
spec:   
  ports:  
    - port: 8091  
  selector:   
    app: master-pod  
  type: LoadBalancer

Worker:

apiVersion: v1  
kind: ReplicationController  
metadata:  
  name: couchbase-worker-rc  
spec:  
  replicas: 1  
  selector:  
    app: couchbase-worker-pod  
  template:  
    metadata:  
      labels:  
        app: couchbase-worker-pod  
    spec:  
      containers:  
      - name: couchbase-worker  
        image: arungupta/couchbase:k8s  
        env:  
          - name: TYPE  
            value: "WORKER"  
          - name: COUCHBASE_MASTER  
            value: "couchbase-master-service"  
          - name: AUTO_REBALANCE  
            value: "false"  
        ports:  
        - containerPort: 8091

Ingress:

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: couchbase
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /
spec:
  rules:
  - host: xxx.com
    http:
      paths:
      - path: /
        backend:
          serviceName: couchbase-master-service
          servicePort: 8091

The pods started running and nothing seems to have an issue at first glance. But when I tried to hit the HostUrl it gives me bad gateway. And when I look into the logs of master's pod it shows me connection refused at 127.0.0.1:8091. I tried to exec into the pod and apply the curl statements from entrypoint.sh manually, but it also gave me the error "failed to connect to 127.0.0.1 port 8091: Connection refused".