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Apache2运用mod_deflate已经代替了mod_gizp
发表于 2009年05月22日 没有评论apache2已经用mod_deflate代替了mod_gzip
apache2已经包含了mod_deflate
打开模组
- /usr/local/apache2/bin/apxs -i -c /yourpath/httpd-2.2.3/modules/filters/mod_deflate.c
httpd.conf添加
- LoadModule deflate_module modules/mod_deflate.so
如果想只压缩html,text,xml 如果下面配置:
- AddOutputFilterByType DEFLATE text/html text/plain text/xml
下面给出我的配置档:
- LoadModule deflate_module modules/mod_deflate.so
- SetOutputFilter DEFLATE
- BrowserMatch ^Mozilla/4 gzip-only-text/html
- BrowserMatch ^Mozilla/4\.0[678] no-gzip
- BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
- # Don’t compress images
- SetEnvIfNoCase Request_URI \
- \.(?:gif|jpe?g|png)$ no-gzip dont-vary
- SetEnvIfNoCase Request_URI \
- \.(?:exe|t?gz|zip|bz2|sit|rar)$ no-gzip dont-vary
- SetEnvIfNoCase Request_URI \
- \.pdf$ no-gzip dont-vary
- SetEnvIfNoCase Request_URI \
- \.(css|js)$ no-gzip dont-vary
- # Make sure proxies don’t deliver the wrong content
- Header append Vary User-Agent env=!dont-vary
- DeflateFilterNote Input input_info
- DeflateFilterNote Output output_info
- DeflateFilterNote Ratio ratio_info
- LogFormat ‘”%r” %{output_info}n/%{input_info}n (%{ratio_info}n%%)’ deflate
- CustomLog logs/deflate_log.log deflate
在apache的使用手册上还有这么一句,但是不知道为什么不能添加上去.
- # Make sure proxies don’t deliver the wrong content
- Header append Vary User-Agent env=!dont-vary
这个可以压缩 SVN 出来的文件。
———————————————
不能添加的原因是下面的模组没有打开：
- LoadModule headers_module modules/mod_headers.so
=================
Apache deflate模块配置说明
前几天一直在找apache2.0以dso方式编译后加载deflate模块的办法
试了apxs -ica mod_deflate.c N次，始终是报- Cannot load /opt/apache/modules/mod_deflate.so into server: /opt/apache/modules/mod_deflate.so: undefined symbol: deflate
异常的痛苦，什么ldd mod_deflate.so后再export LIB_LIBRARY_PATH呀，都试了N次，google也go了N天。终于在google上go出来一篇文章，终于解决，方法如下：
- vi /usr/local/apache2/bin/apr-config
- 修改LDFLAGS=” ” 为 LDFLAGS=”-lz”
- 然后再apxs -ica mod_deflate.c
- 就OK了
另外在配置deflate规则时
apache2.0推荐加上这句- Header append Vary User-Agent env=!dont-vary
以便确保不会输出在压缩过程中出现内容方面的error
但一般情况下，在测试apache的语法过程中会现出
Invalid command ‘Header’, perhaps mis-spelled or defined by a module not included in the server configuration
解决办法就是加载一个headers模块就OK了不过最好还是在编译apache模块时直接加上–enable-deflate –enable-headers就省事多了。
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
- # 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
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%)
_________________
apache1.3.x可以用mod_gzip进行优化网页浏览的速度，可以明显的感觉到速度的提升。在apache2中也尝试用mod_gzip，但是配置后确发现网页不能正确显示（空白页），所以改换mod_deflate。
在Linux命令行下运行以下命令安装mod_deflate模块（斜体是apache2的目录）- /usr/local/apache2/bin/apxs -i -c /root/httpd-2.0.48/modules/filters/mod_deflate.c
编辑httpd.conf，加入以下内容：
- LoadModule deflate_module modules/mod_deflate.so
- DeflateFilterNote ratio
- LogFormat ‘”%v %h %l %u %t “%r” %>s %b “%{Referer}i” “%{User-Agent}i”" (%{ratio}n)’ deflate
- # 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
- # Don’t compress images
- SetEnvIfNoCase Request_URI
- .(?:gif|jpe?g|png)$ no-gzip dont-vary
- # Make sure proxies don’t deliver the wrong content
- # Header命令不对？注释这一行
- # Header append Vary User-Agent env=!dont-vary
- #查找Customlog 注释原来的的一行，改成
- CustomLog logs/deflate_log deflate
- #查看logs目录下deflate_log文件，你可以看到许多这样的信息：
- “www.21php.com 220.163.107.88 - - [27/Mar/2004:01:03:55 -0800] “GET /ad/usrlogo/21PHPLOGO_88X31.gif HTTP/1.1″ 200 3656 “http://soft.ttee.com/vbb/” “Mozilla/4.0 (compatible; MSIE 5.5; Windows 98)”" (-)
- “www.21php.com 211.144.88.138 - - [27/Mar/2004:01:03:57 -0800] “GET /tutorial/tutorial.php?tid=68 HTTP/1.1″ 200 5173 “http://www.21php.com/tutorial/tutorial.php?catalogid=12″ “Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; MyIE2; .NET CLR 1.0.3705; Alexa Toolbar)”" (29)
- “www.21php.com 211.144.88.138 - - [27/Mar/2004:01:03:58 -0800] “GET /style.cssHTTP/1.1″ 304 - “http://www.21php.com/tutorial/tutorial.php?tid=68″ “Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; MyIE2; .NET CLR 1.0.3705; Alexa Toolbar)”" (-)
- “www.21php.com 211.144.88.138 - - [27/Mar/2004:01:03:58 -0800] “GET /images/bar-4.gif HTTP/1.1″ 304 - “http://www.21php.com/tutorial/tutorial.php?tid=68″ “Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; MyIE2; .NET CLR 1.0.3705; Alexa Toolbar)”" (-)
- “www.21php.com 211.144.88.138 - - [27/Mar/2004:01:03:58 -0800] “GET /images/logo.gif HTTP/1.1″ 304 - “http://www.21php.com/tutorial/tutorial.php?tid=68″ “Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; MyIE2; .NET CLR 1.0.3705; Alexa Toolbar)”" (-)
- “www.21php.com 211.144.88.138 - - [27/Mar/2004:01:03:58 -0800] “GET /images/icon1.gif HTTP/1.1″ 304 - “http://www.21php.com/tutorial/tutorial.php?tid=68″ “Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; MyIE2; .NET CLR 1.0.3705; Alexa Toolbar)”" (-)
Boban 写于2004年3月27日凌晨
附注：关于mod_deflate的详细内容，可以参考http://httpd.apache.org/docs-2.0/mod/mod_deflate.html
__________________如果apache是rpm安装的，那么默认就已经有mod_deflate这个模块了。
更详细的可以看这里：http://sysoev.ru/mod_deflate/readme.html因为mod_deflate相比较mod_gzip来说，有了更多的更新，所以我用上了它！
注意：mod_gzip在apache1.x上用起来比较好，但是在apache2.x上用起来就不是很爽，老出错，也许是我的水平问题，没办法，所以改用：mod_deflate
我的apache：2.0.55
配置如下：（修改：httpd.conf）- DeflateCompressionLevel 9
- AddOutputFilterByType DEFLATE text/html text/plain text/xml
- application/x-httpd-php
- AddOutputFilter DEFLATE js css
- BrowserMatch ^Mozilla/4 gzip-only-text/html
- BrowserMatch ^Mozilla/4\.0[678] no-gzip
- BrowserMatch \bMSI[E] !no-gzip !gzip-only-text/html
- Header append Vary User-Agent env=!dont-vary
- DeflateFilterNote deflate_ratioLogFormat “%v %h %l %u %t \”%r\” %>s %b mod_deflate: %{deflate_ratio}n pct.” vhost_with_deflate_infoCustomLog logs/order.7180.com-access_log vhost_with_deflate_info
将以上的配置文字加入到：之间即可:)
以上的做法是压缩一般的网页html、xml、php、css、js等格式文件的输出，虽然会占用一点服务器的资源，不过这个可以减少带宽被占用的情况:)
这里：DeflateCompressionLevel 9是指压缩程度的等级，从1到9，9是最高级别的。这样做可以压缩到20%的大小，最少也有50%。至于jpg等已经压缩过的文件，就不需要再压缩了。发表评论