prometheus 监控tomcat

1.下载相关资源

项目地址: https://github.com/prometheus/jmx_exporter

jar包下载地址: https://repo1.maven.org/maven2/io/prometheus/jmx/jmx_prometheus_javaagent/0.3.1/jmx_prometheus_javaagent-0.3.1.jar

配置文件实例地址:
https://github.com/prometheus/jmx_exporter/blob/master/example_configs/tomcat.yml

--- 
lowercaseOutputLabelNames: true
lowercaseOutputName: true
rules:
- pattern: 'Catalina<>(\w+):'
  name: tomcat_$3_total
  labels:
    port: "$2"
    protocol: "$1"
  help: Tomcat global $3
  type: COUNTER
- pattern: 'Catalina<>(requestCount|maxTime|processingTime|errorCount):'
  name: tomcat_servlet_$3_total
  labels:
    module: "$1"
    servlet: "$2"
  help: Tomcat servlet $3 total
  type: COUNTER
- pattern: 'Catalina<>(currentThreadCount|currentThreadsBusy|keepAliveCount|pollerThreadCount|connectionCount):'
  name: tomcat_threadpool_$3
  labels:
    port: "$2"
    protocol: "$1"
  help: Tomcat threadpool $3
  type: GAUGE
- pattern: 'Catalina<>(processingTime|sessionCounter|rejectedSessions|expiredSessions):'
  name: tomcat_session_$3_total
  labels:
    context: "$2"
    host: "$1"
  help: Tomcat session $3 total
  type: COUNTER
- pattern: ".*"  #让所有的jmx metrics全部暴露出来

2.收集tomcat数据

Jar包应用

安装github上的方式启动就好了

java -javaagent:./jmx_prometheus_javaagent-0.3.0.jar=9151:config.yaml -jar yourJar.jar

Tomcat war包应用

进入bin目录$TOMCAT_HOME/bin，将jmx_exporter.jar包文件和config.yaml文件复制到这里。然后修改里面的一个catalina.sh的脚本，找到JAVA_OPTS,加上以下配置(代理)：

如果有多tomcat,建议将jmx_prometheus_javaagent和config.yaml文件放到固定的目录,$TOMCAT_HOME/bin/catalina.sh文件中写绝对路径.

#修改bin/catalina.sh 文件
添加：
JAVA_OPTS="-javaagent:bin/jmx_prometheus_javaagent-0.3.1.jar=39081:bin/config.yaml"

访问服务器上的39081端口,查看是否采集到数据

[root@sfa_1-47 sfa_haid]# curl -s http://192.168.1.47:39081/ | more 
# HELP jmx_config_reload_success_total Number of times configuration have successfully been reloaded.
# TYPE jmx_config_reload_success_total counter
jmx_config_reload_success_total 0.0
# HELP jmx_config_reload_failure_total Number of times configuration have failed to be reloaded.
# TYPE jmx_config_reload_failure_total counter
jmx_config_reload_failure_total 0.0
# HELP jvm_buffer_pool_used_bytes Used bytes of a given JVM buffer pool.
# TYPE jvm_buffer_pool_used_bytes gauge
jvm_buffer_pool_used_bytes{pool="direct",} 381497.0
jvm_buffer_pool_used_bytes{pool="mapped",} 0.0
# HELP jvm_buffer_pool_capacity_bytes Bytes capacity of a given JVM buffer pool.
# TYPE jvm_buffer_pool_capacity_bytes gauge
jvm_buffer_pool_capacity_bytes{pool="direct",} 381497.0
jvm_buffer_pool_capacity_bytes{pool="mapped",} 0.0
# HELP jvm_buffer_pool_used_buffers Used buffers of a given JVM buffer pool.
# TYPE jvm_buffer_pool_used_buffers gauge
jvm_buffer_pool_used_buffers{pool="direct",} 5.0
jvm_buffer_pool_used_buffers{pool="mapped",} 0.0
# HELP jvm_threads_current Current thread count of a JVM
# TYPE jvm_threads_current gauge
jvm_threads_current 155.0

3.配置Prometheus

添加自动发现文件

[root@localhost prometheus]# vim /opt/prometheus/prometheus.yml
  - job_name: 'tomcat'
    file_sd_configs:
    - files: ['/opt/prometheus/sd_config/tomcat.yml']
      refresh_interval: 180s

配置文件

[root@localhost prometheus]# vim /opt/prometheus/sd_config/tomcat.yml
- targets:
  - 192.168.1.47:39081
  labels:
    idc: bj_company
    service: tomcat

重载配置文件

kill -hup `ps -ef |grep prometheus|grep -v grep|awk '{print $2}'`

到Prometheus控制台查询

111.png

4.配置grafana

导入模板, 需要略作修改就可以使用了

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最终效果图

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