root@kubemaster:~# vi cr-definition.yaml
root@kubemaster:~# cat cr-definition.yaml
---
apiVersion: v1
kind: ReplicationController
metadata:
  name: myapp-cr
  labels:
    app: myapp
    type: front-end
spec:
  template:

    metadata:
      name: myapp-pod
      labels:
        app: myapp
        type: front-end
    spec:
      containers:
      - name: nginx-container
        image: nginx

  replicas: 3