Prometheus+Grafana监控JVM

配置JMX Exporter

下载jmx_exporter

$ mkdir -p /opt/monitor/jmx_exporter
$ chmod 777 -R /opt/monitor/jmx_exporter
$ wget https://repo1.maven.org/maven2/io/prometheus/jmx/jmx_prometheus_javaagent/0.3.1/jmx_prometheus_javaagent-0.3.1.jar

创建配置文件

$ vi /opt/monitor/jmx_exporter/jmx_exporter.yml

jmx_exporter.yml文件内容如下：

lowercaseOutputLabelNames: true
lowercaseOutputName: true
whitelistObjectNames: ["java.lang:type=OperatingSystem"]
rules:
 - pattern: 'java.lang<type=OperatingSystem><>((?!process_cpu_time)w+):'
   name: os_$1
   type: GAUGE
   attrNameSnakeCase: true

配置应用程序

普通运行

java -jar -javaagent:/opt/monitor/jmx_exporter/jmx_prometheus_javaagent-0.3.1.jar=8099:/opt/monitor/jmx_exporter/jmx_exporter.yml app.jar

docker运行

1. 修改启动配置：添加-javaagent:/opt/monitor/jmx_exporter/jmx_prometheus_javaagent-0.3.1.jar=8099:/opt/monitor/jmx_exporter/jmx_exporter.yml
2. 挂载数据卷：-v /opt/monitor/jmx_exporter:/opt/monitor/jmx_exporter
3. 添加端口映射：-p 8099:8099
4. 创建容器

配置Prometheus拉取监控指标

1. 在prometheus.yml中添加任务：

scrape_configs:
  - job_name: 'java'
    scrape_interval: 30s
    static_configs:
    - targets:
      - 'ip:port'
      - 'ip:port'

2. 重启prometheus

配置Grafana模板

1. 配置Prometheus数据源
2. 添加JVM dashboard模板