Tomcat uses log4j for log segmentation

because the Tomcat catalina.out log is not automatically segmented,
one, the need for log segmentation in the vicinity of the package
1, the compression package has three Jar packs: Log4j-1.2.16.jar Tomcat-juli-adapters.jar Tomcat-juli.jar
Note: If not TOMCAT7 version, please go to the official website to download the corresponding version of the Tomcat-juli.jar,tomcat-juli-adapters.jar class package, download the address: Http://www.apache.org/dist/tomcat in Under the Bin/extras path in the corresponding version second, modify the relevant configuration file
1, modify ${catalina.home}/conf/context.xml modification: <context > <context swallowoutput= "true" > Only in this way can the Tomcat's stdout be completely taken over. 2, copy Log4j-1.2.16.jar and Tomcat-juli-adapters.jar to Tomcat's Lib 3, copy Tomcat-juli.jar to ${catalina.home}/bin, the file will exist in the directory, Overlay can be 4, build log4j.properties, and put it under the/lib of Tomcat Log4j.properties is as follows: Relevant parameters can be modified as needed
Log4j.rootlogger=info, CATALINA
# Define all the Appenders log4j.appender.catalina=org.apache.log4j.dailyrollingfileappender Log4j.appender.catalina.file=/home/richmail/logs/tomcat/catalina.log Log4j.appender.catalina.append=true Log4j.appender.catalina.encoding=utf-8 # Roll-over The log once per day log4j.appender.catalina.datepattern= '. ' Yyyy-mm-dd log4j.appender.CATALINA.layout = org.apache.log4j.PatternLayout Log4j.appender.CATALINA.layout.ConversionPattern =%d [%t]%-5p%c-%m%n
Log4j.appender.localhost=org.apache.log4j.dailyrollingfileappender Log4j.appender.localhost.file=/home/richmail /logs/tomcat/localhost.log log4j.appender.localhost.append=true Log4j.appender.localhost.encoding=utf-8 Log4j.appender.localhost.datepattern= '. ' Yyyy-mm-dd log4j.appender.LOCALHOST.layout = org.apache.log4j.PatternLayout Log4j.appender.LOCALHOST.layout.ConversionPattern =%d [%t]%-5p%c-%m%n
Log4j.appender.manager=org.apache.log4j.dailyrollingfileappender log4j.appender.manager.file=/home/richmail/ Logs/tomcat/manager.log log4j.appender.manager.append=true Log4j.appender.manager.encoding=utf-8 Log4j.appender.manager.datepattern= '. ' Yyyy-mm-dd log4j.appender.MANAGER.layout = org.apache.log4j.PatternLayout Log4j.appender.MANAGER.layout.ConversionPattern =%d [%t]%-5p%c-%m%n
Log4j.appender.host-manager=org.apache.log4j.dailyrollingfileappender log4j.appender.host-manager.file=/home/ Richmail/logs/tomcat/host-manager.log Log4j.appender.host-manager.append=true Log4j.appender.host-manager.encoding=utf-8 log4j.appender.host-manager.datepattern= '. ' Yyyy-mm-dd log4j.appender.host-manager.layout = org.apache.log4j.PatternLayout Log4j.appender.host-manager.layout.conversionpattern =%d [%t]%-5p%c-%m%n
Log4j.appender.console=org.apache.log4j.consoleappender Log4j.appender.console.encoding=utf-8 Log4j.appender.CONSOLE.layout = org.apache.log4j.PatternLayout Log4j.appender.CONSOLE.layout.ConversionPattern =%d [%t]%-5p%c-%m%n
# Configure which loggers log to which appenders log4j.logger.org.apache.catalina.core.ContainerBase. [Catalina]. [Localhost]=info, localhost log4j.logger.org.apache.catalina.core.ContainerBase. [Catalina]. [localhost]. [/manager]=\ INFO, manager log4j.logger.org.apache.catalina.core.ContainerBase. [Catalina]. [localhost]. [/host-manager]=\ INFO, Host-manager
5. Modify bin/catalina.sh A. Screen or delete the following: (1) If [-Z "$CATALINA _out"]; Then catalina_out= $CATALINA _base/logs/catalina.out fi
(2) Touch "$CATALINA _out" (3) >> "$CATALINA _out" 2>&1 "&" (two)
B. Modify Org.apache.catalina.startup.Bootstrap "$@" Start \ Content (two)
Modified to: Org.apache.catalina.startup.Bootstrap "$@" start &\ 6. To modify the Localhost_access_log log path in Conf/server.xml
<valve classname= "Org.apache.catalina.valves.AccessLogValve" directory= "/home/richmail/logs/tomcat" pref Ix= "Localhost_access_log." suffix= ". txt" pattern= "%h%l%u%t &quot;%r&quot; %s%b "/>
7. Delete conf/logging.properties file
8. Start Tomcat.