Linux下切分Tomcat的catalina.out日志文件

随着Tomcat的运行，catalina.out文件会越来越大，虽然Tomcat每日会生成一个catalina.ymd.log的文件，但catalina.out主文件仍然不断增加，需要对catalina.out按日切分才好，在网上找了一下，看到一篇《rotating catalina.out in tomcat 5.5 using cronolog》，就用公司的Tomcat配置一下。

 

First, install cronolog, which can be downloaded from here.

the cronolog command works like this:

cronolog [OPTIONS] logfile-spec

a simple example is:

cronolog /logs/catalina.out.%Y-%m-%d

so once output is piped to cronolog, it will create a logfile that looks like:

catalina.out.2007-08-14

and when the date changes, it creates a new file:

catalina.out.2007-08-15

so to configure, in the catalina.sh replace this string:

org.apache.catalina.startup.Bootstrap "$@" start /
>> "$CATALINA_BASE"/logs/catalina.out 2>&1 &

with this:

org.apache.catalina.startup.Bootstrap "$@" start 2>&1 /
| /usr/local/sbin/cronolog /logs/catalina.out.%Y-%m-%d >> /dev/null &

and the catalina.out will now be rotated daily and stored in the path we specified "/logs". If you wish to keep the logs in the tomcat logs dir, just specify that path in the cronolog command in catalina.sh

| cronolog "$CATALINA_BASE"/logs/catalina.out.%Y-%m-%d >> /dev/null &

I also removed this line from catalina.sh:

touch "$CATALINA_BASE"/logs/catalina.out

as it would no longer be necessary.

so now instead of one gigantic, ever-growing catalina.out, I have this:

catalina.2007-08-10.log
catalina.2007-08-11.log
catalina.2007-08-12.log
catalina.2007-08-13.log
catalina.2007-08-14.log
catalina.2007-08-15.log

and all my old log-removal scripts can work and I no longer have to stop the tomcat server just to deal with a log file...