SkyWalking链路追踪+K8S、

# 服务器部署

---
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: skywalking
  name: skywalking
  namespace: iot-dev
spec:
  replicas: 1
  selector:
    matchLabels:
      app: skywalking
  template:
      labels:
        app: skywalking
    spec:
      containers:
        - envFrom:
            - configMapRef:
                name: skywalking-cm
              prefix: SW_
          image: 'apache/skywalking-oap-server:8.9.1'
          imagePullPolicy: IfNotPresent
          name: skywalking
          ports:
            - containerPort: 12800
              name: http
              protocol: TCP
            - containerPort: 11800
              name: grpc
              protocol: TCP
          volumeMounts:
            - mountPath: /etc/localtime
              name: volume-localtime
      volumes:
        - hostPath:
            path: /etc/localtime
            type: ''
          name: volume-localtime

---
apiVersion: v1
kind: Service
metadata:
  annotations: {}
  labels:
    app: skywalking
  name: skywalking
  namespace: iot-dev
spec:
  ports:
    - name: http
      port: 12800
      protocol: TCP
      targetPort: 12800
    - name: grpc
      port: 11800
      protocol: TCP
      targetPort: 11800
  selector:
    app: skywalking
  type: ClusterIP

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# 前端部署

---
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: skywalking-ui
    k8s.kuboard.cn/name: skywalking-ui
  name: skywalking-ui
  namespace: iot-dev
spec:
  replicas: 1
  selector:
    matchLabels:
      app: skywalking-ui
  template:
    metadata:
      labels:
        app: skywalking-ui
    spec:
      containers:
        - env:
            - name: SW_OAP_ADDRESS
              value: 'http://skywalking:12800'
          image: 'apache/skywalking-ui:8.9.1'
          imagePullPolicy: IfNotPresent
          name: skywalking-ui
          ports:
            - containerPort: 8080
              name: http
              protocol: TCP
          volumeMounts:
            - mountPath: /etc/localtime
              name: volume-localtime
      volumes:
        - hostPath:
            path: /etc/localtime
            type: ''
          name: volume-localtime
---
apiVersion: v1
kind: Service
metadata:
  labels:
    app: skywalking-ui
  name: skywalking-ui
  namespace: iot-dev
spec:
  ports:
    - name: http
      nodePort: 31234
      port: 8080
      protocol: TCP
      targetPort: 8080
  selector:
    app: skywalking-ui
  type: NodePort

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# Agent部署

先启动一个初始化容器，把Agent.jar复制出来。

再通过环境变量让java -jar 通过JVM代理Agent.jar启动。

挂载Skywalking后的java yaml模板如下：

---
apiVersion: apps/v1
kind: Deployment
metadata:
  annotations: {}
  labels:
    k8s.kuboard.cn/name: #{appname}
  name: #{appname}
  namespace: iot-dev
spec:
  replicas: 1
  selector:
    matchLabels:
      k8s.kuboard.cn/name: #{appname}
  template:
    metadata:
      creationTimestamp: null
      labels:
        k8s.kuboard.cn/name: #{appname}
    spec:
      initContainers:
        - name: agent-container
          image: apache/skywalking-java-agent:8.9.0-alpine
          volumeMounts:
            - name: skywalking-agent
              mountPath: /agent
          command: [ "/bin/sh" ]
          args: [ "-c", "cp -R /skywalking/agent /agent/" ]
      containers:
        - name: #{appname}
          image: '192.168.1.177:30303/#{appname}:#{apptag}'
          volumeMounts:
            - name: skywalking-agent
              mountPath: /skywalking
          imagePullPolicy: IfNotPresent
          env:
            - name: JAVA_TOOL_OPTIONS
              value: "-javaagent:/skywalking/agent/skywalking-agent.jar"
            - name: SW_AGENT_NAME
              value: '#{appname}'
            - name: SW_AGENT_COLLECTOR_BACKEND_SERVICES
              value: "skywalking:11800"
          ports:
            - containerPort: 8080
              name: http
              protocol: TCP
            - containerPort: 30652
              name: debug
              protocol: TCP
      imagePullSecrets:
        - name: mydocker
      restartPolicy: Always
      volumes:
        - name: skywalking-agent
          emptyDir: { }

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# SpringCloud Gateway

因为SpringCloud使用WebFlux，需要加载插件才能正常收集。

配置文件如下(区别在于多复制一个Gateway插件)：

---
apiVersion: apps/v1
kind: Deployment
metadata:
  annotations: {}
  labels:
    k8s.kuboard.cn/name: #{appname}
  name: #{appname}
  namespace: iot-dev
spec:
  selector:
    matchLabels:
      k8s.kuboard.cn/name: #{appname}
  template:
    metadata:
      labels:
        k8s.kuboard.cn/name: #{appname}
    spec:
      initContainers:
        - name: agent-container
          image: apache/skywalking-java-agent:8.9.0-alpine
          volumeMounts:
            - name: skywalking-agent
              mountPath: /agent
          command: [ "/bin/sh" ]
          args: [ "-c", "cp /skywalking/agent/optional-plugins/apm-spring-cloud-gateway-3.x-plugin-8.9.0.jar /skywalking/agent/plugins/ && cp -R /skywalking/agent /agent/"]
      containers:
        - name: #{appname}
          image: '192.168.1.177:30303/#{appname}:#{apptag}'
          volumeMounts:
            - name: skywalking-agent
              mountPath: /skywalking
          imagePullPolicy: IfNotPresent
          env:
            - name: JAVA_TOOL_OPTIONS
              value: "-javaagent:/skywalking/agent/skywalking-agent.jar"
            - name: SW_AGENT_NAME
              value: '#{appname}'
            - name: SW_AGENT_COLLECTOR_BACKEND_SERVICES
              value: "skywalking:11800"
          ports:
            - containerPort: 8080
              name: http
              protocol: TCP
            - containerPort: 30652
              name: debug
              protocol: TCP
      imagePullSecrets:
        - name: mydocker
      volumes:
        - name: skywalking-agent
          emptyDir: { }

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#DevOps #K8S #运维 #SkyWalking

上次更新: 10/23/2024

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