Tomcat监控

内存监控在我们的大点的应用中是常事，所以怎们检测tomcat占用多少内存那?

随便在网上copy了一下。留做笔记。

Note: This configuration is needed only if you are going to monitor Tomcat remotely. It is not needed if you are going to monitor it locally, using the same user that Tomcat runs with.

The Oracle website includes the list of options and how to configure JMX Remote on Java 6: http://docs.oracle.com/javase/6/docs/technotes/guides/management/agent.html.

The following is a quick configuration guide for Java 6:

Add the following parameters to setenv.bat script of your Tomcat (see RUNNING.txt for details).
Note: This syntax is for Microsoft Windows. The command has to be on the same line. It is wrapped to be more readable. If Tomcat is running as a Windows service, use its configuration dialog to set java options for the service. For un*xes remove "set " from beginning of the line.

	set CATALINA_OPTS=-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=%my.jmx.port% -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false

1. If you require authorization, add and change this:

   	-Dcom.sun.management.jmxremote.authenticate=true -Dcom.sun.management.jmxremote.password.file=../conf/jmxremote.password -Dcom.sun.management.jmxremote.access.file=../conf/jmxremote.access

2. edit the access authorization file $CATALINA_BASE/conf/jmxremote.access:

   	monitorRole readonly controlRole readwrite

3. edit the password file $CATALINA_BASE/conf/jmxremote.password:

   	monitorRole tomcat controlRole tomcat

   Tip: The password file should be read-only and only accessible by the operating system user Tomcat is running as.

Note: The JSR 160 JMX-Adaptor opens a second data channel on a random port. That is a problem when you have a local firewall installed. To fix it, configure a JmxRemoteLifecycleListener, as described in listenersdocumentation.

利用jconsole查看，OK