This is a set of custom filters and settings for monitoring different services with logwatch (http:https://sourceforge.net/projects/logwatch/). Copy this files in your /etc/logwatch/ directory.
This service able to accumulate and summarize information about Errors in catalina.out log file. It has 2 modes:
- short (logwatch detail level is LOW) - produse only information about total errors count and unique errors count
- full (logwatch detail level is MED or HIGH) - additionally, produce error messages for every unique error
Short mode:
--------------------- Tomcat 7 Begin ------------------------
Unique errors: 2
Total num of Errors: 18
--------------------- Tomcat 7 End ------------------------
Full mode:
--------------------- Tomcat 7 Begin ------------------------
Message: SEVERE: Terminal error:
java.lang.ClassCastException: java.util.Collections$UnmodifiableSet cannot be cast to java.lang.Boolean
Count: 14
-------------------------------
Message: SEVERE: Terminal error:
com.vaadin.event.ListenerMethod$MethodException: Invocation of method buttonClick in com..admin.ui.view.pe.process.ProcessInstancesView$2 failed.
Caused by: java.lang.NullPointerException
Count: 4
-------------------------------
Unique errors: 2
Total num of Errors: 18
--------------------- Tomcat 7 End ------------------------
Service provide accumulation of Java ERROR logs, whitch created by Logback Framework in default configuration. You can specify typical errors, whitch only will be counted by Logwatch. Rest of messages will be marked as "unmatched" and included in Logwatch output (without stacktrace).