prometheus+grafana监控tomcat java应用

一、prometheus监控tomcat java应用

https://github.com/prometheus/jmx_exporter

下载jmx_prometheus_javaagent jar包：

https://repo1.maven.org/maven2/io/prometheus/jmx/jmx_prometheus_javaagent/0.14.0/jmx_prometheus_javaagent-0.14.0.jar

config.yaml配置文件示例：

https://github.com/prometheus/jmx_exporter/blob/master/example_configs/tomcat.yml

---   
lowercaseOutputLabelNames: true
lowercaseOutputName: true
rules:
- pattern: 'Catalina<type=GlobalRequestProcessor, name=\"(\w+-\w+)-(\d+)\"><>(\w+):'
  name: tomcat_$3_total
  labels:
    port: "$2"
    protocol: "$1"
  help: Tomcat global $3
  type: COUNTER
- pattern: 'Catalina<j2eeType=Servlet, WebModule=//([-a-zA-Z0-9+&@#/%?=~_|!:.,;]*[-a-zA-Z0-9+&@#/%=~_|]), name=([-a-zA-Z0-9+/$%~_-|!.]*), J2EEApplication=none, J2EEServer=none><>(requestCount|maxTime|processingTime|errorCount):'
  name: tomcat_servlet_$3_total
  labels:
    module: "$1"
    servlet: "$2"
  help: Tomcat servlet $3 total
  type: COUNTER
- pattern: 'Catalina<type=ThreadPool, name="(\w+-\w+)-(\d+)"><>(currentThreadCount|currentThreadsBusy|keepAliveCount|pollerThreadCount|connectionCount):'
  name: tomcat_threadpool_$3
  labels:
    port: "$2"
    protocol: "$1"
  help: Tomcat threadpool $3
  type: GAUGE
- pattern: 'Catalina<type=Manager, host=([-a-zA-Z0-9+&@#/%?=~_|!:.,;]*[-a-zA-Z0-9+&@#/%=~_|]), context=([-a-zA-Z0-9+/$%~_-|!.]*)><>(processingTime|sessionCounter|rejectedSessions|expiredSessions):'
  name: tomcat_session_$3_total
  labels:
    context: "$2"
    host: "$1"
  help: Tomcat session $3 total
  type: COUNTER

修改tomcat目录catalina.sh脚本，找到JAVA_OPTS,添加如下配置：

示例：

JAVA_OPTS="$JAVA_OPTS $JSSE_OPTS   -javaagent:/data/apps/jmx_prometheus_javaagent-0.14.0.jar=9151:/data/apps/config.yaml"

启动tomcat，访问http://IP:9151即可查看收集到的监控指标。

prometheus添加如下配置：

 - job_name: 'tomcat'
    static_configs:
    - targets: ['localhost:9151']

二、grafana数据展示

导入dashboard模板（8563）

修改grafana模板中的job变量，更改值为tomcat；

展示效果如下：