jaeger 链路追踪部署

1. 第一步需要先安装 cert-manager

kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.6.3/cert-manager.yaml

2. 安装 jaeger Operator On Kubernetes

kubectl create namespace observability
kubectl create -f https://github.com/jaegertracing/jaeger-operator/releases/download/v1.62.0/jaeger-operator.yaml -n observability

3. 部署 jaeger 前，需要先创建访问 es 的 key

kubectl create secret generic jaeger-secret --from-literal=ES_PASSWORD=gG45x5lzT2eR8IE44571FltV --from-literal=ES_USERNAME=elastic

4. 部署 jaeger

apiVersion: jaegertracing.io/v1
kind: Jaeger
metadata:
  name: jaeger-prod
spec:
  strategy: production
  storage:
    type: elasticsearch  # jaeger 对接的后端存储
    options:
      es:
        server-urls: https://elasticsearch-es-http.default.svc:9200  # 对应之前 elasticsearch operator 部署的 es 服务
        index-prefix: my-prefix
        tls:
          ca: /es/certificates/ca.crt
    secretName: jaeger-secret # 第三步骤创建的 secret
  volumeMounts:
    - name: certificates
      mountPath: /es/certificates/
      readOnly: true
  volumes:
    - name: certificates
      secret:
        secretName: elasticsearch-es-http-certs-public # 这个对应之前 elasticsearch operator 部署的 es 的 secret

5. 如果安装成功，则会如下所示

[root@VM-0-15-opencloudos jaeger]# kubectl get pod,svc
NAME                                         READY   STATUS    RESTARTS   AGE
pod/jaeger-prod-collector-5d77fdf546-vh4lc   1/1     Running   0          143m
pod/jaeger-prod-query-5c4c9769bc-s4drt       2/2     Running   0          143m

NAME                                     TYPE           CLUSTER-IP      EXTERNAL-IP   PORT(S)                                                              AGE
service/jaeger-prod-collector            ClusterIP      192.168.2.132   <none>        9411/TCP,14250/TCP,14267/TCP,14268/TCP,14269/TCP,4317/TCP,4318/TCP   149m
service/jaeger-prod-collector-headless   ClusterIP      None            <none>        9411/TCP,14250/TCP,14267/TCP,14268/TCP,14269/TCP,4317/TCP,4318/TCP   149m
service/jaeger-prod-query                NodePort       192.168.2.70    <none>        16686:31915/TCP,16685:30148/TCP,16687:32182/TCP                      149m

6. 配置 agent，opentelemetry 访问 jaeger 地址 jaeger-prod-collector.default.svc:4318，其中collector是收集器，query是查询与UI，4318是http访问，4317是rpc访问