harryge00 / jaeger-tutorial

Spring Boot App for Jaeger Tutorial

Jaeger Tutorial

Thanks to @egoebelbecker. This repo is based on https://github.com/egoebelbecker/jaeger-tutorial/

部署

目前istio-system namespace 下的istio-tracing 即为 jager 的deploymen。对应的 service 为：

jaeger-agent
jaeger-collector
jaeger-collector-headless
jaeger-query

为了收集埋点信息，只要发送给jaeger-agent， FQDN 为 jaeger-dev-agent.observability.svc.cluster.local。

本项目的代码已经构建为容器镜像hyge/jaegertutorial:v1，只需用该镜像创建应用：

kubectl create namespace tutorial
kubectl apply -n tutorial -f - <<EOF
apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
kind: Deployment
metadata:
  name: webapp
spec:
  selector:
    matchLabels:
      app: webapp
  replicas: 1
  template:
    metadata:
      labels:
        app: webapp
    spec:
      containers:
      - name: webapp
        image: hyge/jaegertutorial:v1
        ports:
        - containerPort: 8080
        env:
        - name: JAEGER_AGENT_HOST
          value: jaeger-agent.istio-system.svc.cluster.local
---
apiVersion: v1
kind: Service
metadata:
  name: webapp
  labels:
    name: webapp
spec:
  ports:
  - port: 8080
    targetPort: 8080
    name: web
  selector:
    app: webapp
EOF

创建完成后能在tutorial namespace下看到pod：

# kubectl get po -n tutorial                                         
NAME                      READY   STATUS    RESTARTS   AGE
webapp-6f76647fbc-88jhc   1/1     Running   0          40m

访问jaegertutorial应用

可以通过ingress暴露服务，也可以执行 kubectl proxy 代理到本地，然后访问应用 http://localhost:8001/api/v1/namespaces/tutorial/services/webapp:web/proxy/swagger-ui.html#/tutorial-controller

a) 访问employee接口： http://localhost:8001/api/v1/namespaces/tutorial/services/webapp:web/proxy/api/tutorial/1.0/employees

b) 创建 employee 接口：

curl --location --request POST 'http://localhost:8001/api/v1/namespaces/tutorial/services/webapp:web/proxy/api/tutorial/1.0/employees' \
--header 'Content-Type: application/json' \
--data-raw '{
  "email": "[e-mail]",
  "employeeId": 5,
  "firstName": "san",
  "lastName": "zhang",
  "phone": "123-45678"
}'

c) 删除 employee 接口：

curl --location --request DELETE 'http://localhost:8001/api/v1/namespaces/tutorial/services/webapp:web/proxy/api/tutorial/1.0/employees/5'

访问 jaeger

通过 ops/portal/jaeger 可以访问 jaeger

构建镜像

本应用基于jaeger官方的客户端：https://github.com/jaegertracing/jaeger-client-java 。构建java应用：

gradle build copyLocal
gradele build copyDeps

打包镜像、推送镜像

cd docker
./build_save.sh <version>