To monitor tomcat service, a special "tomcat7-admin" package is used. It can be downloaded from Ubuntu repositories:
apt-get install tomcat7-admin
When the package is installed, user account should be set up for authorization in the monitoring system:
The file $TOMCAT_HOME/conf/tomcat-users.xml (standard SoftWLC installation uses /var/lib/tomcat7/conf/tomcat-users.xml path) should be supplemented by the following lines:
<role rolename="manager-gui"/> <user username="admin" password="admin" roles="manager-gui"/>
After that, restart tomcat7 service:
service tomcat7 restart
To use service monitoring GUI, enter the following URL in your browser: http://localhost:8080/manager, where localhost should be replaced by the server's IP address.
Login = admin, password = admin, according to the tomcat-users.xml configuration file.
GUI for monitoring is as follows:
Applications monitoring
Resources monitoring
Further guidance can be found here: http://tomcat.apache.org/tomcat-7.0-doc/manager-howto