Modifying log4j to retain log files

IBM® Control Center uses CCEngine.log4j to configure the engine logs and CCClient.log4j file for the console logs. You can modify these two properties files to change how the log files are rolled over and then rolled off. After the log file settings are configured, you could create a backup/archival process, either manual or through some separate process outside of IBM Control Center. If the content of a log file is empty, the log file will not be rolled over.

This documentation contains samples of the CCEngine.log4j and CClient.log4j properties files, which when used as-is will cause log files to roll over every 12 hours (midday and midnight) without ever rolling off or being limited by size. The last section provides some notes about the types of parameters changed within the sample files.

The file format of the log files ends with either –AM or –PM, for example, CCEngine_20081105_140306184.log.2008-11-06-AM. This file name format enables you to easily identify and move or copy all log files for a given time period, such as 90 days.

To use a sample configuration file, you must replace the existing log4j file contents with the content of the sample configuration file.

Each time, you upgrade to a new version of IBM Control Center or install a maintenance release, you must replace the contents of the log4j file to keep the settings that you want.