Prometheus-指标监控

Prometheus-指标监控

零、备注

• 监控实体需要提供prometheus抓取的接口，mysql的export，springboot 的actuator.
• 每添加一个监控实体，需要修改prometheus.yml文件
• grafana的datasource默认连接prometheus服务端口
• grafana的dashboard需要从网上查找

一、Prometheus监控

• 下载

https://prometheus.io/download/

• 配置&启动

"prometheus.yml的默认配置"
  - job_name: 'prometheus'

    # metrics_path defaults to '/metrics'
    # scheme defaults to 'http'.
    static_configs:
    - targets: ['localhost:9090']

"启动"
.\prometheus.exe --config.file=.\prometheus.yml

• 访问

http://localhost:9090/

二、Grafana监控

• 下载

https://grafana.com/grafana/download?platform=windows

• 配置&启动

"启动"
.\bin\grafana-server.exe

• 访问

http://localhost:3000/

三、关联prometheus与grafana

• 配置datasource
• grafana中的 Configuration->
• 添加：http://localhost:9090，然后点击：《save&test》

四、添加mysql监控

• exporter监控到prometheus

"下载："
https://github.com/prometheus/mysqld_exporter/releases
"配置：新增<.my.cnf>文件"

[client]
host=127.0.0.1
user=root
password=root

"启动："
.\mysqld_exporter.exe --config.my-cnf=.my.cnf
"查看：http://localhost:9104/metrics"

• prometheus查看结果

"修改：prometheus.yml"
  - job_name: mysql
    static_configs:
      - targets: ['localhost:9104'] "需要设置job的端口"
        labels:
          instance: db1 "可以给每个实例一个名字"
""查看：prometheus监控页的菜单：Status->Targets"
http://localhost:9090/targets"

• grafana的dashboards

"下载dashboard配置"
https://github.com/percona/grafana-dashboards/releases/tag/v1.0.0
"加载：grafana的Dashboards点击《import》,将下载文件中MySQL_Overview.json添加进去生成"

五、spring boot的matrics信息

• 加载配置文件

"依赖"
<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
	<groupId>io.micrometer</groupId>
	<artifactId>micrometer-registry-prometheus</artifactId>
	<version>1.1.3</version>
</dependency>

"启动配置"
spring.application.name=springboot_prometheus
management.endpoints.web.exposure.include=*
management.metrics.tags.application=${spring.application.name}

"启动"
@Bean
MeterRegistryCustomizer<MeterRegistry> metricsCommonTags(@Value("${spring.application.name}") String application) {
    return registry -> registry.config().commonTags("application", application);
}

"查看：http://localhost:8088/actuator/prometheus"

• 配置Prometheus的

"prometheus.yml"
###以下内容为SpringBoot应用配置
  - job_name: 'springboot_prometheus'
    scrape_interval: 5s
    metrics_path: '/actuator/prometheus'
    static_configs:
      - targets: ['127.0.0.1:8080']
"查看"

• 配置Grafana的dashborad

"下载Json文件"
https://grafana.com/grafana/dashboards/4701

• 查看