1、k8s中安装部署 skywalking
skywalking集群情况下需要保证用同一数据源,这里我们存储方式改为es
1.1 部署elasticsearch
docker run -it -d -p 9200:9200 -p 9300:9300 -e ES_JAVA_OPTS="-Xms256m -Xmx256m" -e "discovery.type=single-node" elasticsearch:7.14.2
1.2 创建skywalking-oap的yaml
apiVersion: apps/v1 kind: Deployment metadata: name: skywalking-oap namespace: default labels: app: skywalking-oap spec: replicas: 1 selector: matchLabels: app: skywalking-oap template: metadata: labels: app: skywalking-oap spec: containers: - env: - name: SW_STORAGE value: elasticsearch7 ##存储方式 - name: SW_STORAGE_ES_CLUSTER_NODES value: 10.0.24.5:9200 ##es地址 name: skywalking-oap image: apache/skywalking-oap-server:8.4.0-es7 ##镜像 imagePullPolicy: IfNotPresent ##如果存在就不拉去取 ports: - containerPort: 11800 name: grpc - containerPort: 12800 name: rest --- apiVersion: v1 kind: Service metadata: name: skywalking-oap namespace: default labels: service: skywalking-oap spec: ports: - port: 12800 name: rest - port: 11800 name: grpc selector: app: skywalking-oap
1.3 创建skywalking-ui的yaml
apiVersion: apps/v1 kind: Deployment metadata: name: skywalking-ui namespace: default labels: app: skywalking-ui spec: replicas: 1 selector: matchLabels: app: skywalking-ui template: metadata: labels: app: skywalking-ui spec: containers: - name: skywalking-ui image: apache/skywalking-ui:8.4.0 ports: - containerPort: 8080 name: page env: - name: SW_OAP_ADDRESS value: skywalking-oap:12800 ##skywalking-oap监听端口 --- apiVersion: v1 kind: Service metadata: name: skywalking-ui namespace: default labels: service: skywalking-ui spec: ports: - port: 8080 name: page nodePort: 30200 type: NodePort selector: app: skywalking-ui
1.3 k8s中部署 skywalking-oap.yaml、skywalking-ui.yaml
kubectl create -f skywalking-oap.yaml kubectl create -f skywalking-ui.yaml
1.4 查看skywalking-ui
2、部署项目使用skywalking进行链路追踪
2.1 下载 skywalking-agent
https://skywalking.apache.org/downloads/#Agents
2.2 idea 中使用skywalking-agent
2.2.1 创建项目server-order 并创建web控制层
@RestController public class OrderController { @GetMapping("/getuuid") public String getuuid(){ String uuid = UUID.randomUUID().toString().replace("-", ""); return uuid; } }
2.2.2 创建项目web-monitor 并创建feign和monitor的控制层
@FeignClient(value = "server-order") @Component public interface OrderService { @GetMapping("/getuuid") public String getuuid(); }
@RestController public class MonitorController { @Autowired private OrderService orderService; @GetMapping("send") public String send(){ String getuuid = orderService.getuuid(); return getuuid; } }
2.2.3 增加环境变量
-javaagent:D:\opts\apache-skywalking-java-agent-8.8.0\skywalking-agent\skywalking-agent.jar -Dskywalking.collector.backend_service=ip地址:端口 -Dskywalking.agent.service_name=服务名称
2.2.3 查看skywalking-ui链路
2.3 k8s 部署项目增加skywalking链路追踪
2.3.1 构建镜像
FROM java:8 WORKDIR /project ENV JAVA_OPTS="" ENV SKYWALKING_OPTS="" CPOY skywalking-agent.jar skywalking-agent.jar COPY web-monitor.jar web-monitor.jar ENTRYPOINT ["sh","-c","java -jar ${JAVA_OPTS} web-monitor.jar ${SKYWALKING_OPTS} "]
2.3.2 创建k8s无状态服务
apiVersion: extensions/v1beta1 #版本 kind: Deployment #资源类型 metadata: labels: workload.user.cattle.io/workloadselector: deployment-cloud-web-monitor #标签,k8s对于资源控制主要是根据labels和selector进行的 name: web-monitor #资源名称 namespace: deafult #所属命名空间 spec: progressDeadlineSeconds: 600 replicas: 1 #一个pod revisionHistoryLimit: 10 selector: matchLabels: workload.user.cattle.io/workloadselector: deployment-cloud-web-monitor strategy: rollingUpdate: maxSurge: 1 maxUnavailable: 0 type: RollingUpdate #发布策略 template: #创建模板 metadata: labels: workload.user.cattle.io/workloadselector: deployment-cloud-web-monitor spec: containers: - env: - name: JAVA_OPTS value: -Xmx3550M -Xms3550M -Xmn2G -Xss256k - name: SKYWALKING_OPTS value: -javaagent:./skywalking-agent.jar -Dskywalking.agent.service_name=web-monitor -Dskywalking.collector.backend_service=skywalking-oap:11800 image: 192.1.1.1/project/web-monitor:stable #镜像 imagePullPolicy: Always #镜像拉取策略 name: web-monitor #容器名称 ports: - containerPort: 8513 #暴露端口 name: 8513tcp02 protocol: TCP resources: limits: memory: 4Gi stdin: true terminationMessagePath: /dev/termination-log terminationMessagePolicy: File tty: true volumeMounts: - mountPath: /log #容器内部挂载位置 name: vol1 dnsPolicy: ClusterFirst restartPolicy: Always #重启策略 schedulerName: default-scheduler securityContext: {} terminationGracePeriodSeconds: 30 volumes: - name: vol1 persistentVolumeClaim: #挂载的pvc claimName: log-pvc
2.3.3 注意点
在上边的镜像中 将skywalking-agent.jar 拷贝到镜像里,这一步可以使用pv挂载,另外也可以将skywalking-agent用initc来做链路追踪
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