The system/debug/gc logs

Based on configurations set in $CASSANDRA_HOME/conf/logback.xml, the system.log and debug.log files are generated. But by default, logs related to the repair, storage, and streaming services have INFO level logs. These can be switched to WARN by adding the following lines at the end, just to reduce chattiness for efficient troubleshooting:

  <logger name="org.apache.Cassandra.service.StorageService"     level="WARN"/>  <logger name="org.apache.Cassandra.streaming.StreamResultFuture"    level="WARN"/>  <logger name="org.apache.Cassandra.repair" level="WARN"/></configuration>

GC logs for Cassandra are configured in $CASSANDRA_HOME/conf/Cassandra-env.sh or jvm.options, and by default they are disabled. Although we have JVM-related ...

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