springboot-devops-demo-sidecar.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  #namespace: springboot-devops-demo
  name: springboot-devops-demo
  labels:
    app: springboot-devops-demo
    tier: backend
spec:
  replicas: 2
  selector:
    matchLabels:
      app: springboot-devops-demo
      tier: backend
  template:
    metadata:
      labels:
        app: springboot-devops-demo
        tier: backend
    spec:
      # refs: https://kubernetes.io/docs/tasks/configure-pod-container/configure-pod-initialization/
      initContainers:
        - name: sidecar-jar
          image: hbstarjason/springboot-devops-demo:jar
          imagePullPolicy: IfNotPresent
          #command: ["cp", "-r", "/project/target/", "/opt"]
          command: ["cp", "/project/target/k8s.jar", "/opt"] 
          volumeMounts:
            - name: sidecar
              mountPath: /opt
      containers:
        - name: runtime
          image: openjdk:8
          resources:
            requests:
              memory: "200Mi"
              cpu: "200m"
            limits:
              memory: "200Mi"
              cpu: "200m"
          ports:
            - containerPort: 8080
          command: ["bash", "-c", "java  -jar /opt/k8s.jar -Djava.security.egd=file:/dev/./urandom"]  
          #command: ["bash", "-c", "java ${JAVA_OPTS} -jar /opt/app.jar -Djava.security.egd=file:/dev/./urandom"]
          #env:
          #  - name: JAVA_OPTS
          #    value: "-javaagent:/sidecar/sidecar/skywalking/agent/skywalking-agent.jar"
          volumeMounts:
            - name: sidecar
              mountPath: /opt
      volumes:
        - name: sidecar
          emptyDir: {}

---
apiVersion: v1
kind: Service
metadata:
  name: springboot-devops-demo
  labels:
    app: springboot-devops-demo
    tier: backend
spec:
  selector:
    app: springboot-devops-demo
    tier: backend
  ports:
  - port: 8080
    name: k8s-backend
  #type: LoadBalancer
  type: NodePort