How do I configure logback to gzip my logs automatically?

Question

i am using logback in my java web appliaction. here's my "logback.xml" file.

<?xml version="1.0" encoding="UTF-8"?> <configuration debug="false">      <property name="LOG_DIR" value="/home/ying/.jetty_logs/vehicle" />      <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">         <encoder>             <pattern>%date [%thread] %-5level %logger{36}[%L] - %msg%n</pattern>         </encoder>     </appender>      <appender name="LAST" class="ch.qos.logback.core.rolling.RollingFileAppender">         <file>${LOG_DIR}/last.log</file>         <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">             <fileNamePattern>last.%d{yyyy-MM}.gz</fileNamePattern>             <maxHistory>24</maxHistory>         </rollingPolicy>         <encoder>             <pattern>%date:%msg%n</pattern>         </encoder>     </appender>      <logger name="org.springframework" level="WARN" />     <logger name="org.apache.shiro" level="WARN" />     <logger name="org.hibernate" level="WARN" />      <logger name="ying.car.interceptor.AutoLoginInterceptor" additivity="false" level="INFO">         <appender-ref ref="LAST" />     </logger>     <logger name="ying.car.controller.LoginController" additivity="false" level="INFO">         <appender-ref ref="LAST" />     </logger>     <logger name="ying.car.controller.LogoutController" additivity="false" level="INFO">         <appender-ref ref="LAST" />     </logger>      <root level="DEBUG">         <appender-ref ref="STDOUT" />     </root>  </configuration> 

today is june 1st 2013, all my old logs are overwrited and no *.gz created. somebody help me, please.

Answer 1

Try to do like this, Hope it will work for you.

<appender name="FILE"     class="ch.qos.logback.core.rolling.RollingFileAppender">     <File>${LOGDIR}/filename.log</File>     <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">         <!-- rollover daily -->         <FileNamePattern>${LOGDIR}/file.%d{yyyy-MM-dd}.%i.log.gz         </FileNamePattern>         <!-- keep 30 days' worth of history -->         <MaxHistory>30</MaxHistory>         <!-- or whenever the file size reaches 10MB -->         <timeBasedFileNamingAndTriggeringPolicy             class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">             <maxFileSize>10MB</maxFileSize>         </timeBasedFileNamingAndTriggeringPolicy>     </rollingPolicy>     <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">         <Pattern>%date [%thread] %-5level %logger{36} - %msg%n         </Pattern>     </encoder> </appender> 

The above code will compress your file on the day basis or If the log file size exceeds 10MB.

Note : I have added "%i" in filePattern, It will iterate your file name as file1,file2 etc.