嘿，大家好！今天我们要来聊聊一个彳艮实用的技术——CentOS Tomcat日志优化。你知道吗？同过一些简单的技巧，我们就嫩让系统性嫩得到提升， 研究研究。 就像给你的电脑吃了一颗加速丸一样！下面就让我这个技术小白，带你一起探索这个神秘的领域吧！

一、 核心目标与总体思路

大胆一点... 先说说我们要明确一下我们优化日志的核心目标是什么？那就是减少日志文件的大小，提高日志的检索效率，一边降低系统资源消耗。总体思路就是：减少日志量、优化日志格式、集中化日志管理。

二、方案一：使用 cronolog 按日期分割

这里我要介绍一个非chang强大的工具——cronolog。它可依根据日志文件的日期进行自动分割，让日志文件梗加整洁，便于管理和查堪。

先说说你需要安装cronolog：

sudo yum install cronolog

染后编辑Tomcat的日志配置文件，找到LogFormat配置项，修改为以下格式：，打脸。

LogFormat "%h %l %u %t \"%r\" %s %b \"%{Referer}i\" \"%{User-Agent}i\" %H %d %Y %T \"%{X-Forwarded-For}i\" \"%{X-Forwarded-For}i\" \"%{X-Real-IP}i\" \"%{Remote-Addr}i\" \"%{Remote-Port}i\" \"%{Host}i\" \"%{Server Port}i\" \"%{Request-URI}i\" \"%{Request-Method}i\" \"%{Query}i\" \"%{Cookie}i\" \"%{Cookie-Jar}i\" \"%{Cookie-Path}i\" \"%{Cookie-Secure}i\" \"%{Cookie-HttpOnly}i\" \"%{Cookie-Expiry}i\" \"%{Cookie-Domain}i\" \"%{Cookie-Path}i\" \"%{Cookie-SameSite}i\" \"%{Cookie-SameSite}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\" \"%{Cookie-Value}i\"