Configuring Apache Cassandra event logging in KUMA

To configuring Apache Cassandra event logging in KUMA:

  1. Make sure that the server where Apache Cassandra is installed has 5 GB of free disk space.
  2. Connect to the Apache Cassandra server using an account with administrator rights.
  3. Before making changes, create backup copies of the following configuration files:
    • /etc/cassandra/cassandra.yaml
    • /etc/cassandra/logback.xml
  4. Make sure that the settings in the /etc/cassandra/cassandra.yaml configuration file have the following values; make changes if necessary:
    1. in the audit_logging_options section, set the enabled setting to true.
    2. in the logger section, set the class_name setting to FileAuditLogger.
  5. Add the following lines to the /etc/cassandra/logback.xml configuration file:

    <!-- Audit Logging (FileAuditLogger) rolling file appender to audit.log -->

    <appender name="AUDIT" class="ch.qos.logback.core.rolling.RollingFileAppender">

    <file>${cassandra.logdir}/audit/audit.log</file>

    <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">

    <!-- rollover daily -->

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

    <!-- each file should be at most 50MB, keep 30 days worth of history, but at most 5GB -->

    <maxFileSize>50MB</maxFileSize>

    <maxHistory>30</maxHistory>

    <totalSizeCap>5GB</totalSizeCap>

    </rollingPolicy>

    <encoder>

    <pattern>%-5level [%thread] %date{ISO8601} %F:%L - %replace(%msg){'\n', ' '}%n</pattern>

    </encoder>

    </appender>

    <!-- Audit Logging additivity to redirect audt logging events to audit/audit.log -->

    <logger name="org.apache.cassandra.audit" additivity="false" level="INFO">

    <appender-ref ref="AUDIT"/>

    </logger>

  6. Save changes to the configuration file.
  7. Restart the Apache Cassandra service using the following commands:
    1. sudo systemctl stop cassandra.service
    2. sudo systemctl start cassandra.service
  8. After restarting, check the status of Apache Cassandra using the following command:

    sudo systemctl status cassandra.service

    Make sure that the command output contains the following sequence of characters:

    Active: active (running)

Apache Cassandra event export is configured. Events are located in the /var/log/cassandra/audit/ directory, in the audit.log file (${cassandra.logdir}/audit/audit.log).

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