Highest Level of Abstraction Deployment (manage) > RC (manage) > Pod

Create a YML Deployment file

touch deployment.yml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: sampleapp-deployment
  labels:
    app: sampleapp
spec:
  replicas: 7
  minReadySeconds: 10
  strategy:
    type: RollingUpdate
    rollingUpdate:
      maxUnavailable: 1
      maxSurge: 1
  selector:
    matchLabels:
      app: sampleapp
  template:
    metadata:
      labels:
        app: sampleapp
    spec:
      containers:
      - name: myapp-container
        image: nginx:1.7.9
        ports:
        - containerPort: 80

Push the YML to apiserver{}

kubectld create -f deployment.yml

K8s will perform a rolling update

Create new RCs and Pods, but keeps the old ones for rollback *ensure all container images are tagged properly Tuning in readiness probs and time to ready should be done.