固定POD IP

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-test
spec:
  selector:
    matchLabels:
      app: nginx
  replicas: 1 # tells deployment to run 1 pods matching the template
  template:
    metadata:
      labels:
        app: nginx
      annotations:
        "cni.projectcalico.org/ipAddrs": "[\"10.42.210.135\"]"
    spec:
      containers:
      - name: nginx
        image: nginx:1.7.9
        ports:
        - containerPort: 80

cat ippool1.yaml
apiVersion: projectcalico.org/v3
kind: IPPool
metadata:
  name: pool-1
spec:
  blockSize: 31
  cidr: 10.21.0.0/31
  ipipMode: Never
  natOutgoing: true
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-test
spec:
  selector:
    matchLabels:
      app: nginx
  replicas: 1 # tells deployment to run 1 pods matching the template
  template:
    metadata:
      labels:
        app: nginx
      annotations:
        "cni.projectcalico.org/ipv4pools": "[\"pool-1\"]"
    spec:
      containers:
      - name: nginx
        image: nginx:1.7.9
        ports:
        - containerPort: 80