probe

probe是一个只需要扔个war包进去就可以监控tomcat、jvm运行情况的项目，配置超级简单，看Jmeter实战书中发现的

项目地址：https://github.com/psi-probe/

粘贴一段官方的介绍

Unlike many other server monitoring tools, PSI Probe does not require any changes to your existing apps. It provides all of its features through a web-accessible interface that becomes available simply by deploying it to your server. These features include:

  • Requests: Monitor traffic in real-time, even on a per-application basis.
  • Sessions: Browse/search attributes, view last IP, expire, estimate size.
  • JSP: Browse, view source, compile.
  • Data Sources: View pool usage, execute queries.
  • Logs: View contents, download, change levels at runtime.
  • Threads: View execution stack, kill.
  • Connectors: Status, usage charts.
  • Certificates: System trust store and connector keystore / * truststore
  • Cluster: Status, usage charts.
  • JVM: Memory usage charts, advise GC
  • Java Service Wrapper: Restart JVM.
  • System: CPU usage, memory usage, swap file usage.

安装

# wget https://github.com/psi-probe/psi-probe/releases/download/3.0.0/probe.war

配置jvm开启远程调试

root@128b6b436d37:/usr/local/tomcat# head bin/catalina.sh 
#!/bin/sh
export CATALINA_OPTS="$CATALINA_OPTS -Duser.timezone=Asia/Shanghai -Dcom.sun.management.jmxremote"

配置访问控制

root@128b6b436d37:/usr/local/tomcat# cat conf/tomcat-users.xml 
<?xml version="1.0" encoding="UTF-8"?>
<tomcat-users>  
  <role rolename="manager-gui"/>
  <role rolename="manager-script"/>
  <role rolename="manager-jmx"/>
  <role rolename="manager-status"/>
  <role rolename="admin-gui"/>
  <role rolename="admin-script"/>
  <user username="user" password="passwd" roles="manager-gui,manager-script,manager-jmx,manager-status,admin-gui,admin-script"/>
</tomcat-users>

重启tomcat

root@128b6b436d37:/usr/local/tomcat# ./bin/shutdown.sh && ./bin/startup.sh

观察日志检查是否启动

catalina.out无明显异常则应该启动成功，访问http://url/probe可以probe页面

下午偷懒看书时(Jmeter实战)，看到一款tomcat监控工具psi-probe，简单了解了下，非常的厉害，manager能做的它都可以做，而且初次之外还可以看到更多的性能数据，例如各个项目的请求情况，Tomcat线程状态，线程在执行那些代码，堆非堆使用情况等等，但是有一个问题就是，这个项目没有http api，这就优点让人头大了，如果提供http api的话就非常容易集成进zabbix监控中去了，但是google、github、甚至连g+找了一圈都没有发现，这着实让人难受~

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