k8s根据节点名或标签调度pod

1.查询节点的标签

kubectl get node --show-labels

 

 

2.给master和worker节点添加label

kubectl label nodes be.master node-role=master
kubectl label nodes be.worker.1 node-role=worker

查询当前标签

 

 

3.在deployment.yaml中指定根据标签调度pod

apiVersion: apps/v1
kind: Deployment
metadata:
  name: mssql
  labels:
    app: mssql
spec:
  replicas: 1
  selector:
    matchLabels:
      app: mssql
  template:
    metadata:
      labels:
        app: mssql
    spec: 
      nodeSelector:
        node-role: worker
      containers:
        - name: mssql
          image: mcr.microsoft.com/mssql/server:2017-CU25-ubuntu-16.04
          imagePullPolicy: IfNotPresent
          ...

根据节点名称调度配置如下

apiVersion: apps/v1
kind: Deployment
metadata:
  name: mssql
  labels:
    app: mssql
spec:
  replicas: 1
  selector:
    matchLabels:
      app: mssql
  template:
    metadata:
      labels:
        app: mssql
    spec: 
      nodeName: be.worker.1
      containers:
        - name: mssql
          image: mcr.microsoft.com/mssql/server:2017-CU25-ubuntu-16.04
          imagePullPolicy: IfNotPresent
          ...