cat << EOF > roll-nginx.yaml

apiVersion: apps/v1

kind: Deployment

metadata:

  name: roll-nginx

spec:

  replicas: 3

  selector:

    matchLabels:

      app: nginx-pod

  template:

    metadata:

      name: nginx-pod

      labels:

        app: nginx-pod

    spec:

      containers:

      - name: nginx

        image: nginx:1.15.12

EOF