Apache deflate模块配置说明

一、 需求

压缩apache的输出内容，降低网站带宽

二、 加载Apache的deflate模块

1、 修改apr-config

vi /usr/local/apache2/bin/apr-config

修改LDFLAGS=" " 为 LDFLAGS="-lz"

2、 到apache源安装目录下,例如

cd /root/httpd-2.0.55/modules/filters

3、加载mod_deflate模块

/usr/local/apache2/bin/apxs -i -a -c mod_deflate.c

如果没有安装headers模块，加载headers模块

cd /root/httpd-2.0.55/modules/metadata

加载mod_headers模块

/usr/local/apache2/bin/apxs -i -a –c mod_headers.c

三、配置Apache主配置文件

1. 在httpd.conf主配置文件里添加如下行

#声明输入流的byte数量

DeflateFilterNote Input instream

#声明输出流的byte数量

DeflateFilterNote Output outstream

#声明压缩的百分比

DeflateFilterNote Ratio ratio

#声明日志类型

LogFormat '"%r" %{outstream}n/%{instream}n (%{ratio}n%%)' deflate

CustomLog logs/deflate_log deflate

#指定压缩参数

<Location />

# Insert filter

SetOutputFilter DEFLATE

# Netscape 4.x has some problems...

BrowserMatch ^Mozilla/4 gzip-only-text/html

# Netscape 4.06-4.08 have some more problems

BrowserMatch ^Mozilla/4\.0[678] no-gzip

# MSIE masquerades as Netscape, but it is fine

# BrowserMatch \bMSIE !no-gzip !gzip-only-text/html

# NOTE: Due to a bug in mod_setenvif up to Apache 2.0.48

# the above regex won't work. You can use the following

# workaround to get the desired effect:

BrowserMatch \bMSI[E] !no-gzip !gzip-only-text/html

# Don't compress images

SetEnvIfNoCase Request_URI \.(?:gif|jpg|cab|jpe?g|exe|bmp|mp3|rar|zip|swf|png)$ no-gzip dont-vary

# Make sure proxies don't deliver the wrong content

Header append Vary User-Agent env=!dont-vary

</Location>

二、日志输出格式如下

[root@trffic2 logs]# tail -f access_log

"GET /apache_pb.gif HTTP/1.1" -/- (-%)

"GET /manual/ HTTP/1.1" 2163/7434 (29%)

"GET /manual/style/css/manual.css HTTP/1.1" 3973/18335 (21%)

"GET /manual/style/css/manual-loose-100pc.css HTTP/1.1" 1006/2882 (34%)

"GET /manual/style/css/manual-print.css HTTP/1.1" 2994/13017 (23%)