what are the log purging and rotation policies for Cassandra? How and where they are configured?
I could see debug, system and gc logs being zipped and rotated. Also finally purged after some days.
Just need to identify where these settings are configured. Are they handled by cassandra or we need to define our log4j settings?
By default, Cassandra allows for 20 system.logs and 20 debug.log files. You'll see a new file created once the current log file hits 20MB in size. These defaults can be changed by altering the SYSTEMLOG and DEBUGLOG sections of the logback.xml file.
Check out the docs for more information: Configuring Logging
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