prometheus监控java项目（jvm等）：k8s外、k8s内

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prometheus监控java项目（jvm等）：k8s外、k8s内

2024-07-09 21:10| 来源: 网络整理| 查看: 265

前言

虽然可以使用jvisualvm之类的工具监控java项目，但是集群环境下，还是捉襟见肘，下面介绍如何用主流的prometheus来监控java项目。

java项目配置

在pom.xml中添加依赖

org.springframework.boot spring-boot-starter-actuator io.micrometer micrometer-registry-prometheus 1.5.1 io.github.mweirauch micrometer-jvm-extras 0.2.0

修改spring boot配置(application.yml)

（下面management默认内容也是，可以不配）

server: port: 8096 spring: application: name: gift management: endpoint: health: show-details: always endpoints: web: exposure: include: 'prometheus' # 暴露/actuator/prometheus metrics: tags: application: ${spring.application.name} # 暴露的数据中添加application label

非k8s下java项目监控

打包：mvn clean package

启动项目：java -jar xxx.jar

请求：http://xxx:8096/qzcsbj/actuator/prometheus，查看暴露的数据

在Prometheus中添加配置：vim prometheus.yml

- job_name: "gift" metrics_path: "/qzcsbj/actuator/prometheus" static_configs: - targets: ["qzcsbj:8096"]

重启prometheus：systemctl restart prometheus

访问prometheus：http://ip:9090/targets

targets下可以看到这个端点

grafana导入模板：4701

效果如下：

其它参考：非k8s下java项目监控

https://www.cnblogs.com/uncleyong/p/16335583.html

k8s下java项目监控

打包：mvn clean package -Dmaven.test.skip=true

打镜像：docker build -t 192.168.117.160/gifts/gift:v1 .

把镜像推送到镜像仓库：docker push 192.168.117.160/gifts/gift:v1

编写资源yaml文件：deploy和svc

vim gift.yaml

--- apiVersion: apps/v1 kind: Deployment metadata: name: gift-java-deploy namespace: gift spec: replicas: 1 selector: matchLabels: k8s-app: gift template: metadata: labels: k8s-app: gift spec: imagePullSecrets: - name: gifts-registry containers: - name: gift image: 192.168.117.160/gifts/gift:v1215 imagePullPolicy: IfNotPresent ports: - containerPort: 8096 --- apiVersion: v1 kind: Service metadata: name: gift-java-deploy-svc namespace: gift labels: k8s-app: gift-java-deploy-svc spec: type: ClusterIP selector: k8s-app: gift ports: - name: gift-java-deploy-svc-api port: 8096 targetPort: 8096 protocol: TCP

创建资源：kubectl apply -f gift.yaml

查看资源：kubectl get all -n gift

编写servicemonitor资源yaml文件：

vim gift-sm.yaml

--- apiVersion: monitoring.coreos.com/v1 kind: ServiceMonitor metadata: name: java-servicemonitor namespace: monitoring labels: k8s-app: gift spec: endpoints: - port: gift-java-deploy-svc-api interval: 30s scheme: http path: '/qzcsbj/actuator/prometheus' selector: matchLabels: k8s-app: gift-java-deploy-svc namespaceSelector: matchNames: - gift

创建资源：kubectl apply -f gift-sm.yaml