Change logging locations

Logging locations are automatically set during installation. The default logs location is /var/log. For example, /var/log/cassandra.

To change logging locations after installation, update the log directory location in the hcd-env.sh file or the logback.xml file.

Generate all logs in the same location

To generate all logs in the same location, do the following:

Add CASSANDRA_LOG_DIR to the hcd-env.sh file.

The location of the hcd-env.sh file depends on your installation type:
- Package installations: /etc/hcd/hcd-env.sh
- Tarball installations: INSTALL_DIRECTORY/bin/hcd-env.sh
  export CASSANDRA_LOG_DIR="LOG_DIRECTORY_PATH"
  Replace LOG_DIRECTORY_PATH with the absolute path to your preferred log directory.
Restart HCD.
Go to your log directory and verify that HCD is writing logs to the new location.

Generate logs in separate locations

To generate logs in separate locations, do the following:

Locate the logback.xml file in your installation:
The location of the logback.xml file depends on your installation type:
- Package installations: /etc/hcd/cassandra/logback.xml
- Tarball installations: INSTALL_DIRECTORY/resources/cassandra/conf/logback.xml

In the logback.xml file, 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 (if uncommented). 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>

Replace LOG_DIRECTORY_PATH with the absolute path to your preferred log directory.

Restart HCD.
Go to your log directory and verify that HCD is writing logs to the new location.

Change logging locations

Generate all logs in the same location

Generate logs in separate locations

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