deployment.yaml

使用hostAliases将hosts解析写入pod中的/etc/hosts

apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    k8s-app: tomcat8
  name: tomcat8
  namespace: default
spec:
  replicas: 1
  selector:
    matchLabels:
      k8s-app: tomcat8
  strategy:
    rollingUpdate:
      maxSurge: 1
      maxUnavailable: 0
    type: RollingUpdate
  template:
    metadata:
      labels:
        k8s-app: tomcat8
    spec:
      containers:
      - image: ccr.ccs.tencentyun.com/ecool_tomcat8/centos7-jdk1.8-tomcat8:v3
        imagePullPolicy: IfNotPresent
        name: tomcat8
        resources:
          limits:
            cpu: 500m
            memory: 1Gi
          requests:
            cpu: 250m
            memory: 256Mi
      dnsPolicy: ClusterFirst
      restartPolicy: Always
      hostAliases:
      - hostnames:
        - logdb1
        ip: 172.17.0.
      - hostnames:
        - confcdb1
        ip: 172.17.0.

service.yaml

service通过NodePort方式访问endpoints

apiVersion: v1
kind: Service
metadata:
  name: tomcat8
  namespace: default
spec:
  ports:
  - name: 8080-8080-tcp
    nodePort: 30000
    port: 8080
    protocol: TCP
    targetPort: 8080
  selector:
    k8s-app: tomcat8
  sessionAffinity: None
  type: NodePort