k8s固定pod在某一節點, node添加Label

基本信息：172.16.207.4 172.16.207.5 172.16.207.6
容器：claimlog
配置文件：claimlog.yaml

kind: Deployment
apiVersion: extensions/v1beta1
metadata:
  labels:
    app: devops-claimlog
  name: deploy-devops-claimlog
  namespace: chesun-test
spec:
  replicas: 1
  selector:
    matchLabels:
      app: devops-claimlog
  template:
    metadata:
      labels:
        app: devops-claimlog
      # Comment the following annotation if Dashboard must not be deployed on master
      #annotations:
      #  scheduler.alpha.kubernetes.io/tolerations: |
      #    [
      #      {
      #        "key": "dedicated",
      #        "operator": "Equal",
      #        "value": "master",
      #        "effect": "NoSchedule"
      #      }
      #    ]
    spec:
      nodeSelector:
        name: 172.16.207.6
      containers:
      - name: devops-claimlog
        image: 172.16.207.205/chesun-test/claimlog:2020-01-03_14_55_57
        #command: ["/apps/openresty/openresty"]
        imagePullPolicy: Always
        #securityContext:
        #  privileged: true
        ports:
        - containerPort: 20990
          protocol: TCP
---
kind: Service
apiVersion: v1
metadata:
  labels:
    app: devops-claimlog
  name: srv-devops-claimlog
  namespace: chesun-test
spec:
  type: NodePort
  ports:
  - name: http
    port: 20990
    targetPort: 20990
 #   nodePort: 30006 
  selector:
    app: devops-claimlog
  sessionAffinity: ClientIP
  sessionAffinityConfig:
    clientIP:
      timeoutSeconds: 10800

查看現有node及label:  kubectl get node --show-labels

添加label: kubectl label nodes <node-name> <label-key>=<label-value> 
 
kubectl label nodes 172.16.207.6 name=172.16.207.6

刪除label: kubectl label nodes <node-name> <label-key>

修改Label的值: kubectl label nodes <node-name> <label-key>=<label-value> --overwrite

kind: Deployment
apiVersion: extensions/v1beta1
metadata:
  labels:
    app: devops-claimlog
  name: deploy-devops-claimlog
  namespace: chesun-test
spec:
  replicas: 1
  selector:
    matchLabels:
      app: devops-claimlog
  template:
    metadata:
      labels:
        app: devops-claimlog
      # Comment the following annotation if Dashboard must not be deployed on master
      #annotations:
      #  scheduler.alpha.kubernetes.io/tolerations: |
      #    [
      #      {
      #        "key": "dedicated",
      #        "operator": "Equal",
      #        "value": "master",
      #        "effect": "NoSchedule"
      #      }
      #    ]
    spec:
      nodeSelector:
        name: 172.16.207.6
      containers:
      - name: devops-claimlog
        image: 172.16.207.205/chesun-test/claimlog:2020-01-03_14_55_57
        #command: ["/apps/openresty/openresty"]
        imagePullPolicy: Always
        #securityContext:
        #  privileged: true
        ports:
        - containerPort: 20990
          protocol: TCP

重新應用一下: kubectl apply -f claimlog.yaml