Linux tomcat下catalina.out日志文件分割
<p><strong>Linux tomcat下catalina.out日志文件分割</strong></p>
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<strong>前言：</strong></p>
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tomcat默认使用Java.util.logging记录日志，默认只记录tomcat的日志，不记录应用的日志。tomcat支持采用log4j进行日志记录，配置方法如下：</p>
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1.更新最新的tomcat_juli.jar包到./bin/目录下；</p>
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2.拷贝log4j.jar,lo4j.properties到./lib目录下;</p>
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3.删除./conf/logging.properties</p>
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4.重启</p>
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log4j配置样本</p>
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实例代码：</p>
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<code class="xml plain">log4j.rootLogger=INFO,CATALINA </code>
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<code class="xml plain">log4j.logger.com.danga.MemCached.MemCachedClient=WARN,CATALINA </code>
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<code class="xml plain">#log4j.appender.CONSOLE = org.apache.log4j.ConsoleAppender </code>
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<code class="xml plain">#log4j.appender.CONSOLE.layout = org.apache.log4j.PatternLayout </code>
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<code class="xml plain">#log4j.appender.CONSOLE.encoding = UTF-8 </code>
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<code class="xml plain">#log4j.appender.CONSOLE.layout.conversionPattern =[%p-%d{yyyy/MM/dd/HH\:mm\:ss}]%c{1}.(%L) - %m%n </code>
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<code class="xml plain"># Define CATALINA appenders </code>
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<code class="xml plain">log4j.appender.CATALINA = org.apache.log4j.DailyRollingFileAppender </code>
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<code class="xml plain">log4j.appender.CATALINA.file = ${catalina.base}/logs/catalina.out </code>
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<code class="xml plain">log4j.appender.CATALINA.DatePattern ='.'yyyy-MM-dd </code>
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<code class="xml plain">log4j.appender.CATALINA.layout = org.apache.log4j.PatternLayout </code>
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<code class="xml plain">log4j.appender.CATALINA.layout.conversionPattern = [%p-%d{yyyy/MM/dd/HH\:mm\:ss}]%c{1}.(%L) - %m%n </code>
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<code class="xml plain">log4j.appender.CATALINA.append = true </code>
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lo4j自动在午夜切割catalina.out成catalina.out.2011-03-07</p>
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感谢阅读，希望能帮助到大家，谢谢大家对本站的支持！</p> 感谢楼主的分享！这个方法很实用，解决了Tomcat日志文件过大的问题。按照楼主的配置，log4j会自动在每天午夜将catalina.out按日期分割成catalina.out.2011-03-07这样的文件，确实很方便管理和归档。
想请教一下：
1. 这种方式分割后，旧的日志文件需要手动清理吗？有没有配置自动清理的方案？
2. 如果Tomcat应用本身也有自己的log4j配置，会不会和Tomcat的全局配置冲突？
另外提醒一下，帖子开头说的步骤里有个小笔误：
2.拷贝log4j.jar,lo4j.properties到./lib目录下;
应该是log4j.properties，不是lo4j.properties哦。
再次感谢楼主的分享，对我们这些需要管理Tomcat服务器的人来说很有帮助！👍
Tomcat官方文档也有相关说明，感兴趣的朋友可以去看看。
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