k8s deployment资源部署java以及skywalking agent示例

cat deploy.yml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: app-name
  namespace: your-namespace
  annotations:
    kubernetes.io/change-cause: 2.11.0 # 版本说明 - 用于回滚等
  labels:
    app: app-name
spec:
  replicas: 1
  selector:
    matchLabels:
      app: app-name
  template:
    metadata:
      labels:
        app: app-name
    spec:
      initContainers:   # 初始化容器挂载sky agent
      - name: skywalking-agent
        image: harbor.jiuqichina.com/public/sky-agent:8.8.0
        imagePullPolicy: IfNotPresent
        command: ['sh']
        args: ['-c','cp -r /usr/skywalking/agent/* /home/skywalking-agent']
        volumeMounts:
          - mountPath: /home/skywalking-agent
            name: skywalking-agent
      containers:
      - name: app-name
        image: harbor.myregister.com/dev/app-name:2.11.0
        imagePullPolicy: IfNotPresent
        volumeMounts:
          - mountPath: /home/skywalking-agent
            name: skywalking-agent
        ports:
        - containerPort: server_port
        env:
        - name: MY_POD_NAME  #获取容器名称 ，给后面的环境变量使用时需要先定义。有顺序，其余内置变量参考：https://kubernetes.io/zh-cn/docs/tasks/inject-data-application/environment-variable-expose-pod-information/
          valueFrom:
            fieldRef:
              fieldPath: metadata.name
        - name: jvm_opts
          value: "-Drocketmq.client.name=app_name-$(MY_POD_NAME) "
        - name: sky_agent
          value: "-javaagent:/home/skywalking-agent/skywalking-agent.jar -DSW_AGENT_NAME=app_name-DSW_AGENT_COLLECTOR_BACKEND_SERVICES=sky-server:11800"
        - name: sky_agent_id
          value: "-Dskywalking.agent.instance_name=test-app_name-$(MY_POD_NAME)"
 
        resources:
          requests:
            memory: "512Mi"
            cpu: "200m"
          limits:
            memory: "4Gi"
            cpu: "2000m"
        livenessProbe:
          httpGet:
            path: /actuator/health
            port: server_port
          initialDelaySeconds: 60
          periodSeconds: 10
          timeoutSeconds: 5
        readinessProbe: # 就绪探针
          httpGet:
            path: /actuator/health
            port: server_port
          initialDelaySeconds: 120
          periodSeconds: 10
          timeoutSeconds: 5
        lifecycle:
          preStop: # pod停止前Hook - 优雅停机
            exec:
              command:
              - "curl"
              - "-XPOST"
              - "http://127.0.0.1:server_port/actuator/shutdown"
      imagePullSecrets:
      - name: regcred
      volumes:
        - name: skywalking-agent
          emptyDir: {}
 

kubectl apply -f app_name-deployment.yml