Prometheus监控JVM

1. jmx_exporter

下载jmx_exporter

ubuntu:/# mkdir -p /usr/local/prometheus/jmx_exporter 
ubuntu:/# cd /usr/local/prometheus/jmx_exporter
ubuntu:/# wget https://repo1.maven.org/maven2/io/prometheus/jmx/jmx_prometheus_javaagent/0.16.1/jmx_prometheus_javaagent-0.16.1.jar

配置文件jmx_exporter

jmx_exporter.yml

 vim /usr/local/prometheus/jmx_exporter/jmx_exporter.yml
---
rules:
- pattern: ".*"

java agent运行jmx_exporter

以java agent的方式启动你的一个java应用

java -javaagent:/usr/local/prometheus/jmx_prometheus_javaagent-0.16.1.jar=3010:/usr/local/prometheus/jmx_exporter.yml  -jar  xxx-web-0.1-SNAPSHOT.jar

2. prometheus

docker方式下载运行

# docker pull prom/prometheus    #下载docker镜像
# mkdir -p /etc/prometheus
# vim /etc/prometheus/prometheus.yml  #配置
# docker run -d \
    -p 192.168.3.13:9090:9090 \
    -v /etc/prometheus:/etc/prometheus \
    prom/prometheus;

prometheus中配置上步的jmx的metrics

global:
  scrape_interval: 15s
  scrape_timeout: 10s
  evaluation_interval: 15s
alerting:
  alertmanagers:
  - follow_redirects: true
    scheme: http
    timeout: 10s
    api_version: v2
    static_configs:
    - targets: []
scrape_configs:
- job_name: prometheus
  honor_timestamps: true
  scrape_interval: 15s
  scrape_timeout: 10s
  metrics_path: /metrics
  scheme: http
  follow_redirects: true
  static_configs:
  - targets:
    - 192.168.3.13:9090
  ### 以下为jmx_exporter地址：需改为你实际的
- job_name: 'jmx'
  static_configs:
  scrape_interval: 15s
  - targets: ['192.168.3.14:3010']

验证

访问http://192.168.3.13:9090 可看到读取的jmx_exporter的metrics

3. Grafana连接Prometheus

docker pull grafana/grafana
docker run -d --name=grafana -p 3000:3000 grafana/grafana

访问http://192.168.3.13:3000 使用admin/admin即可登录

配置prometheus数据源

配置dashboard

找一个合适的dashboard导入。如https://grafana.com/grafana/dashboards/3457

效果

参考

prometheus安装 https://prometheus.io/docs/prometheus/latest/installation/

JMX Exporter 项目地址: https://github.com/prometheus/jmx_exporter
JVM 监控面板: https://grafana.com/grafana/dashboards/3457
Grafana(https://grafana.com/)