ks-question-12.md

Question 12 - Pod anti affinity

Use the following manifest:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: deploy-important
  namespace: project-tiger
  labels:
    id: very-important
spec:
  replicas: 3
  selector:
    matchLabels:
      id: very-important
  template:
    metadata:
      labels:
        id: very-important
    spec:
      affinity:
        podAntiAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            labelSelector:
            - matchExpressions:
              - key: id
                operator: In
                values:
                - very-important
            topologyKey: "kubernetes.io/hostname"    
      containers:
      - name: container1
        image: nginx:1.17.6-alpine
      - name: container2
        image: kubernetes/pause