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Published Sep. 10, 2025

Logs rotation based on size in Liferay DXP 7.4

Written By

Koustuv Dhani

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Issue

  • Configuring log rotation for logs based on the size.

Environment

  • Liferay DXP 7.4

Resolution

  • The logs can be rotated based on size by making a small adjustment in the portal-log4j.xml file.
  • Extract portal-impl.jar from /tomcat-9.0.73/webapps/ROOT/WEB-INF/shielded-container-lib/ and copy the portal-log4j.xml file. Then, paste portal-log4j.xml into ${TOMCAT_HOME}/webapps/ROOT/WEB-INF/classes/META-INF and rename it to portal-log4j-ext.xml.
  • Modify both <Appender> blocks for .log and .xml in portal-log4j-ext.xml to enable log rotation based on size. Following is the sample configuration for reference:
     
    <Appender name="TEXT_FILE" type="RollingFile"
    fileName="@liferay.home@/logs/liferay.log"
    filePattern="@liferay.home@/logs/liferay.%d{yyyy-MM-dd}-%i.log.gz"
    ignoreExceptions="false">
    <Layout type="PatternLayout" pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} %-5p [%t][%c{1}:%L] %m%n" />
    <Policies>
    <SizeBasedTriggeringPolicy size="10KB"/>
    </Policies>
    <DefaultRolloverStrategy max="30"/>
    </Appender>

    <Appender name="XML_FILE" type="RollingFile"
    fileName="@liferay.home@/logs/liferay.xml"
    filePattern="@liferay.home@/logs/liferay.%d{yyyy-MM-dd}-%i.xml.gz"
    ignoreExceptions="false">
    <Log4j1XmlLayout locationInfo="true" />
    <Policies>
    <SizeBasedTriggeringPolicy size="10KB"/>
    </Policies>
    <DefaultRolloverStrategy max="30"/>
    </Appender>
  • Note: The file is rolled over after reaching a specified size of 10KB, creating a maximum of 30 log files. Initially, the log file is named liferay.log. Once it reaches 10KB, it is renamed to liferay.2024-08-22-1.log.gz.

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