Allows users to select the log level in Moab Cluster Manager, which can be used to help prepare logs to be accompanied with bug reports. Logs are written to the <MCM_HOME>/logs/mcm.log file. Higher logging levels create more detailed logging information, which facilitates debugging but may slow performance.

Below are the logging levels available, listed in order of increasing verbosity.

• 0 - Off : Turns off logging.
• 1 - Fatal : Logs only server events that cause the application to abort.
• 2 - Error : Logs all events that Fatal logs plus error events that might allow the application to continue running.
• 3 - Warn : Logs everything that Error logs plus other minor problems.
• 4 - Info : Logs everything that Warn logs does, plus informational messages that highlight the progress of the application at coarse-grained level.
• 5 - Info-With-Moab-Cmd-Debug : Logs everything that Info logs plus all the interaction with Moab Workload Manager except the frequent (defaults to every 2 seconds) commands to determine if Moab Cluster Manager should refresh data from Moab Workload Manager.
• 6 - Debug : Logs everything that Info-With-Moab-Cmd-Debug level logs plus fine-grained informational events that are useful in debugging.
• 7 - Trace : The most verbose logging level. The only level that logs all interaction with Moab Workload Manager, including the frequent refresh checks ignored by other logging levels.

Users can configure extremely fine grained logging information by editing the <MCM_HOME>/conf/log4j.properties file. Using this file, one can set the log level on individual classes or packages within Moab Cluster Manager. It should be noted that configuring individual package or class loggers in the log4j.properties file other than the root logger or the logger for com.moab.api.XMLDebuggingTools may override the settings applied from this window.

Verbose log levels cause a small performance penalty. Because levels 5 and above log all the interaction with Moab Workload Manager, they can use substantially more memory when connected to larger systems.