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Enabling audit logs for WSO2 carbon based servers

Audit logs provide very useful information related to the users who has tried to access the server. By default, most of the WSO2 carbon based products (ESB, APIM, DSS) have not enabled this logging. In production environments, it is always better to enable audit logs due to various reasons.

All you need to do is add the following section to log4j.properties file which resides in <CARBON_HOME>/repository/conf directory.

# Configure audit log for auditing purposes
log4j.logger.AUDIT_LOG=INFO, AUDIT_LOGFILE
log4j.appender.AUDIT_LOGFILE=org.apache.log4j.DailyRollingFileAppender
log4j.appender.AUDIT_LOGFILE.File=${carbon.home}/repository/logs/audit.log
log4j.appender.AUDIT_LOGFILE.Append=true
log4j.appender.AUDIT_LOGFILE.layout=org.wso2.carbon.utils.logging.TenantAwarePatternLayout
log4j.appender.AUDIT_LOGFILE.layout.ConversionPattern=[%d] %P%5p - %x %m %n
log4j.appender.AUDIT_LOGFILE.layout.TenantPattern=%U%@%D [%T] [%S]
log4j.appender.AUDIT_LOGFILE.threshold=INFO
log4j.additivity.AUDIT_LOG=false


Once you enable this, you can see the audit log file is created under <CARBON_HOME>/repository/logs directory. It will contain information similar to below mentioned lines.

[2015-03-12 10:44:01,565]  INFO -  'admin@carbon.super [-1234]' logged in at [2015-03-12 10:44:01,565-0500]
[2015-03-12 10:44:45,825]  INFO -  User admin successfully authenticated to perform JMX operations.
[2015-03-12 10:44:45,826]  INFO -  User : admin successfully authorized to perform JMX operations.
[2015-03-12 10:44:45,851]  WARN -  Unauthorized access attempt to JMX operation.
java.lang.SecurityException: Login failed for user : jmx_user. Invalid username or password.
at org.wso2.carbon.core.security.CarbonJMXAuthenticator.authenticate(CarbonJMXAuthenticator.java:124)
at javax.management.remote.rmi.RMIServerImpl.doNewClient(RMIServerImpl.java:232)
at javax.management.remote.rmi.RMIServerImpl.newClient(RMIServerImpl.java:199)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:322)
at sun.rmi.transport.Transport$1.run(Transport.java:177)
at sun.rmi.transport.Transport$1.run(Transport.java:174)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:173)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:556)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:811)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:670)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
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