Changing logging locations

Logging locations for DataStax Enterprise (DSE) are set at installation. Generally, the default logs location is /var/log. For example, /var/log/cassandra and /var/log/tomcat.

For details, see Default file locations for package and Installer-Services installations or Default file locations for tarball and Installer-No Services installations.

If you use DSE OpsCenter, you can change logging locations for DSE using configuration profiles.

To change logging locations after installation, do the following:

  1. Update the log directory location in the dse-env.sh file or the logback.xml file:

    dse-env.sh

    To generate all logs in the same location, update the dse-env.sh file.

    The location of the dse-env.sh file depends on your installation type:

    • Package installations and installer-services installations: /etc/dse/dse-env.sh

    • Tarball installations and installer-no services installations: INSTALLATION_LOCATION/bin/dse-env.sh

    Add CASSANDRA_LOG_DIR to the dse-env.sh file, replacing LOG_DIRECTORY_PATH with the absolute path to your preferred log directory:

    export CASSANDRA_LOG_DIR="LOG_DIRECTORY_PATH"
    logback.xml

    To generate logs in separate locations, update the logback.xml file. The location of the logback.xml file depends on the type of installation:

    • Package installations and installer-services installations: /etc/dse/cassandra/logback.xml

    • Tarball installations and installer-no services installations: INSTALLATION_LOCATION/resources/cassandra/conf/logback.xml

    Replace ${cassandra.logdir} with the absolute path to your preferred log directory in both the <file> and <fileNamePattern> elements for each appender. To use different directories for different log types (system, debug, audit), specify different paths for each appender.

    The ${cassandra.logdir} variable appears in the following locations:

    • SYSTEMLOG appender: Controls system.log and its archived files. For example:

      <!-- Before -->
<file>${cassandra.logdir}/system.log</file>
<fileNamePattern>${cassandra.logdir}/system.log.%d{yyyy-MM-dd}.%i.zip</fileNamePattern>

<!-- After -->
<file>LOG_DIRECTORY_PATH/system.log</file>
<fileNamePattern>LOG_DIRECTORY_PATH/system.log.%d{yyyy-MM-dd}.%i.zip</fileNamePattern>

    • DEBUGLOG appender: Controls debug.log and its archived files. For example:

      <!-- Before -->
<file>${cassandra.logdir}/debug.log</file>
<fileNamePattern>${cassandra.logdir}/debug.log.%d{yyyy-MM-dd}.%i.zip</fileNamePattern>
<!-- After -->
<file>LOG_DIRECTORY_PATH/debug.log</file>
<fileNamePattern>LOG_DIRECTORY_PATH/debug.log.%d{yyyy-MM-dd}.%i.zip</fileNamePattern>

    • AUDIT appender: Controls audit.log and its archived files. Must be uncommented to apply. For example:

      <!-- Before -->
<file>${cassandra.logdir}/audit.log</file>
<fileNamePattern>${cassandra.logdir}/audit.log.%d{yyyy-MM-dd}.%i.zip</fileNamePattern>
<!-- After -->
<file>LOG_DIRECTORY_PATH/audit.log</file>
<fileNamePattern>LOG_DIRECTORY_PATH/audit.log.%d{yyyy-MM-dd}.%i.zip</fileNamePattern>

  2. Optional: Change the Apache Tomcat® server log locations for DSE Search:

    cassandra-env.sh

    To generate all logs in the same location, update the cassandra-env.sh file. The location of the cassandra-env.sh file depends on the type of installation:

    • Package installations and installer-services installations: /etc/dse/cassandra/cassandra-env.sh

    • Tarball installations and installer-no services installations: INSTALLATION_LOCATION/conf/cassandra-env.sh

    Update the TOMCAT_LOGS environment variable, replacing LOG_DIRECTORY_PATH with the absolute path to your preferred log directory:

    export TOMCAT_LOGS="LOG_DIRECTORY_PATH"
    logging.properties

    To generate logs in separate locations, update the logging.properties file.

    Set the locations in the resources/tomcat/conf/logging.properties file by replacing ${tomcat.logs} with the path to your log directory, and then save the file:

    1catalina.org.apache.juli.AsyncFileHandler.level = FINE
1catalina.org.apache.juli.AsyncFileHandler.directory = LOG_DIRECTORY_PATH
1catalina.org.apache.juli.AsyncFileHandler.prefix = catalina.

2localhost.org.apache.juli.AsyncFileHandler.level = FINE
2localhost.org.apache.juli.AsyncFileHandler.directory = LOG_DIRECTORY_PATH
2localhost.org.apache.juli.AsyncFileHandler.prefix = localhost.

3manager.org.apache.juli.AsyncFileHandler.level = FINE
3manager.org.apache.juli.AsyncFileHandler.directory = LOG_DIRECTORY_PATH
3manager.org.apache.juli.AsyncFileHandler.prefix = manager.

4host-manager.org.apache.juli.AsyncFileHandler.level = FINE
4host-manager.org.apache.juli.AsyncFileHandler.directory = LOG_DIRECTORY_PATH
4host-manager.org.apache.juli.AsyncFileHandler.prefix = host-manager.

java.util.logging.ConsoleHandler.level = FINE
java.util.logging.ConsoleHandler.formatter = org.apache.juli.OneLineFormatter

  3. Restart DSE.

  4. Go to your log directory and verify that DSE is writing logs to the new location.

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