k8s部署tomcat鏡像

vim k8s-tomcat7.yaml

apiVersion: apps/v1beta2              #當前配置格式版本
kind: Deployment                                #創建資源類型
metadata:                                       #資源元數據，name是必須項
  name: tomcat7-deployment
  namespace: kube-system
spec:                                           #資源規格說明
  replicas: 1                                   #副本數量
  selector:
    matchLabels:
      k8s-app: web-tomcat7
  template:                                 #定義pod模板
    metadata:                                   #pod元數據，至少一個label
      labels:
        k8s-app: web-tomcat7
    spec:                                       #pod規格說明
      containers:
      - name: tomcat7
        image: java8tomcat7:1.0
        ports:
        - containerPort: 8080

---
apiVersion: v1
kind: Service
metadata:
  name: web-tomcat7
  namespace: kube-system
spec:
   ports:
     - port: 8099
       targetPort: 8080
       nodePort: 30899  #瀏覽器訪問的端口
   selector:
     k8s-app: web-tomcat7
   type: NodePort

運行：kubectl apply -f k8s-tomcat7.yaml 

刪除：kubectl delete -f k8s-tomcat7.yaml 

查看所有節點：kubectl get pods --all-namespaces -o wide

查看某個節點的情況：kubectl description tomcat7-deployment-87f87c9ff-mks5t get pods