apiVersion: v1
kind: ConfigMap
metadata:
  name: myapp-configmap
  labels:
    app: myapp-configmap
data:
  SPRING_PROFILES_ACTIVE: test
  TZ: Asia/Shanghai
  SPRING_DATASOURCE_HOST: xxx.xxx.xxx.xxx
  SPRING_DATASOURCE_PORT: "3306"
---
apiVersion: v1
kind: Secret
metadata:
  name: myapp-secret
type: Opaque
data:
  SPRING_DATASOURCE_USERNAME: cm9vdA== # echo -n 'root' | base64
  SPRING_DATASOURCE_PASSWORD: cm9vdA== # echo -n 'root' | base64
---
apiVersion: v1
kind: Service
metadata:
  name: myapp-svc
  namespace: default
  labels:
    app: myapp-svc
spec:
  type: NodePort
  ports:
    - name: server
      port: 8080
      targetPort: 8080
      nodePort: 30080
  selector:
    app: myapp-pod
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: myapp-deployment
  labels:
    app: myapp-deployment
spec:
  replicas: 1
  selector:
    matchLabels:
      app: myapp-pod
  template:
    metadata:
      labels:
        app: myapp-pod
    spec:
      containers:
        - name: myapp #容器名称，必须字段，名称唯一且对象创建后不可以被修改
          image: myapp:latest
          imagePullPolicy: Always # 镜像下载策略( Always：总是去仓库下载；Never：从不去仓库下载；IfNotPresent：如果本地没有就去仓库下载。默认是"IfNotPresent" 但是，如果镜像的标签是latest，则总会是"Always，并且对象一旦被创建，这个字段不允许被改变）
          ports:
            - name: server # 端口名称
              containerPort: 8080 # 容器监听端口
              # hostPort: 8080 # 容器所在主机需要监听的端口号，默认与 Container 相同
              protocol: TCP # 端口协议，支持 TCP 和 UDP，默认 TCP
          envFrom:
            - configMapRef:
                name: myapp-configmap
            - secretRef:
                name: myapp-secret
          volumeMounts:
            - name: applog
              mountPath: /app/log # 容器内日志路径
              subPath: myapp
          lifecycle:
            preStop:
              exec:
                command: ["sh", "-c", "sleep 10"] # 优雅关闭 https://docs.spring.io/spring-boot/docs/current/reference/html/deployment.html#deployment.cloud.kubernetes
      volumes:
        - name: applog
          hostPath:
            # 宿主机目录
            path: /root/k8s/log
            # 如果目录不存在则创建(可创建多层目录)
            type: DirectoryOrCreate
      nodeName: k8sworker1 #如果要用hostPath,一般需要指定nodeName,这样pod才能每次都调度到同一个node,不会丢失volume