进入/etc/logrotate.d目录创建tomcat文件，内容如下：

/usr/local/java/tomcat7/logs/catalina.out {

    daily

    rotate 15

    missingok

    notifempty

    copytruncate

    compress

    nodelaycompress

    sharedscripts

    postrotate

        /bin/kill -HUP `cat /var/run/syslogd.pid 2> /dev/null` 2> /dev/null || true

        /bin/kill -HUP `cat /var/run/rsyslogd.pid 2> /dev/null` 2> /dev/null || true

    endscript

}

linux日志分隔

/etc/init.d/rsyslog restart