springboot 2.X接入Prometheus

摘自我球的docs文档，我没时间在CSDN上再写一份，见

前景提要

注意：官方提供的simpleclient_spring_boot这个starter在springboot2.0中不支持，官方issue：https://github.com/prometheus/client_java/issues/345

会报以下错误：

Caused by: java.lang.ClassNotFoundException: org.springframework.boot.actuate.endpoint.AbstractEndpoint
at java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[na:1.8.0_201]
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_201]
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349) ~[na:1.8.0_201]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_201]

相关的组件介绍：

grafana

Prometheus

正式开始

pom添加依赖：

<!-- Spring boot actuator to expose metrics endpoint -->
<dependency>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<!-- Micormeter core dependecy -->
<dependency>
 <groupId>io.micrometer</groupId>
 <artifactId>micrometer-core</artifactId>
</dependency>
<!-- Micrometer Prometheus registry -->
<dependency>
 <groupId>io.micrometer</groupId>
 <artifactId>micrometer-registry-prometheus</artifactId>
</dependency>

application.yml配置监控指标：

## prometheus监控配置 management:   server:     port: 18080 # 修改actuator的端口   metrics:     export:       prometheus:         enabled: true         step: 1m         descriptions: true   web:     server:       auto-time-requests: true   endpoints:     prometheus:       id: springmetrics     web: #     base-path: /xueqiu # 修改actuator的路径名       exposure:         include: health,prometheus         exclude: info,env,metrics,httptrace,threaddump,heapdump

服务发现

该部分正在测试阶段，稍后开放，不影响用户当前使用

安全认证

--------该部分不需要，直接由NGINX层面完成-----------

以下是在项目中添加security安全依赖，也可以使用系统自己的安全认证

配置pom.xml

<dependency>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-security</artifactId>
</dependency>

配置application.xml

## security认证配置   security:     user:       name: monitor       password: monitor123

配置prometheus.xml

…… scrape_configs: # job name 这个配置是表示在这个配置内的时间序例，每一条都会自动添加上这个{job_name:"redis-manage"}的标签。   - job_name: 'redis-manager'     # metrics_path defaults to '/actuator/prometheus'     # scheme defaults to 'http'.     # 重写了全局抓取间隔时间，由15秒重写成5秒。     metrics_path: /xueqiu/prometheus     scrape_interval: 5s     scheme: http     basic_auth:       username: admin       password: admin     static_configs:       - targets: ['192.168.64.51:8099'] ……

样例效果

grafana的dashboard json demo：

spring-boot-statistics_rev2.json

Prometheus监控效果：

参考链接：

https://docs.spring.io/spring-metrics/docs/current/public/prometheus

https://docs.spring.io/spring-boot/docs/current/reference/html/production-ready-endpoints.html

https://prometheus.io/docs/prometheus/latest/configuration/configuration/

https://www.wqp0010.top/2018/12/27/SpringBoot2-0%E6%95%B4%E5%90%88Prometheus-Grafana/

https://segmentfault.com/a/1190000018642077

https://juejin.im/post/5aad3351f265da23994e4ce7

代码稍后给你们。。。