bbc-topologySpreadConstraints

gistfile1.txt

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-test
  namespace: kube-system
spec:
  strategy:
    rollingUpdate:
      maxSurge: 1
  selector:
    matchLabels:
      app: nginx-test
  replicas: 2
  template:
    metadata:
      labels:
        app: nginx-test
    spec:
      topologySpreadConstraints:
      - maxSkew: 1
        topologyKey: "topology.kubernetes.io/zone"
        whenUnsatisfiable: ScheduleAnyway # toleration zone issue
        labelSelector:
          matchLabels:
            app: nginx-test
      - maxSkew: 2
        topologyKey: kubernetes.io/hostname
        whenUnsatisfiable: DoNotSchedule # clusterAutoscaler will start a new node if needed
        labelSelector:
          matchLabels:
            app: nginx-test
      tolerations:
      - effect: NoSchedule
        key: cloud.blabla.io/k8s-volatile
        operator: Equal
        value: "true"
      affinity:
        podAntiAffinity:
          preferredDuringSchedulingIgnoredDuringExecution:
          - weight: 10
            podAffinityTerm:
              labelSelector:
                matchLabels:
                  app: nginx-test
              topologyKey: kubernetes.io/hostname
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
            - matchExpressions:
              - key: cloud.blabla.io/k8s-volatile
                operator: Exists
      containers:
      - name: nginx
        image: nginx:1.14.2
        resources:
          requests:
            cpu: 500m
        ports:
        - containerPort: 80