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在同一台机器上安装squid给apache加速

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简单原理说明:
squid可以缓存经常访问的静态页面,图片等,因此加上squid以后,客户端再访问这些页面的时候就会直接从squid的缓存中读取,而不再去向apache请求了
服务器上先按照正常安装好apache,确保能够正常访问,然后安装squid
下载squid,地址:http://www.squid-cache.org/Versions/v2/2.5/squid-2.5.STABLE10.tar.gz(这是当前稳定版的最新一个)
解压缩
  tar zxvf squid-2.5.STABLE10.tar.gz
  cd squid-2.5.STABLE10
使用如下的命令行来配置squid
./configure --enable-useragent-log --enable-referer-log --disable-icmp --disable-delay-pools --enable-default-err-language=Simplify_Chinese --enable-err-languages="Simplify_Chinese English" --disable-internal-dns --enable-async-io=160 --enable-cahce-digests --enable-underscore  --enable-kill-parent-hack --enable-gnuregex
关于每一项参数的说明,请参考./configure --help
然后make,确认编译正常没有报错信息,就make install 安装,默认的安装路径是/usr/local/squid
添加squid用户和组
  pw groupadd squid
 pw useradd squid -g squid -s /sbin/nologin
创建高速缓存目录和log目录
 cd /var/
 mkdir squid
 cd squid
 mkdir cache
 mkdir logs
 chown -R squid:squid /var/squid
修改squid配置文件squid.conf为以下内容
http_port 80
icp_port 0
hierarchy_stoplist cgi-bin ?
acl QUERY urlpath_regex cgi-bin \? \.asp \.php \.jsp \.cgi
no_cache deny QUERY
cache_mem 128 MB
log_icp_queries off
half_closed_clients off
cache_swap_low 60
cache_swap_high 95
maximum_object_size 1024 KB
minimum_object_size 0 KB
maximum_object_size_in_memory 8 KB
ipcache_size 1024
ipcache_low 90
ipcache_high 95
cache_dir ufs /var/squid/cache 4096 16 256
cache_access_log none
cache_log /var/squid/logs/cache.log
cache_store_log none
pid_filename /var/squid/logs/squid.pid
quick_abort_min 16 KB
quick_abort_max 16 KB
quick_abort_pct 95
connect_timeout 120 seconds
read_timeout 15 minutes
request_timeout 30 seconds
client_lifetime 60 minutes
pconn_timeout 120 seconds
dns_children 20
redirect_children 20
refresh_pattern ^ftp:           1440    20%     10080
refresh_pattern ^gopher:        1440    0%  1440
refresh_pattern -i .html 0 40% 60 ignore-reload
refresh_pattern -i .hml 0 40% 60 ignore-reload
refresh_pattern -i .gif 10 40% 60 ignore-reload
refresh_pattern -i .swf 10 40% 60 ignore-reload
refresh_pattern -i .jpg  10 40% 60 ignore-reload
refresh_pattern -i .js$ 10 40% 60 ignore-reload
refresh_pattern -i .css  10 40% 60 ignore-reload
refresh_pattern . 0 20% 60
acl all src 0.0.0.0/0.0.0.0
acl manager proto cache_object
acl localhost src 127.0.0.1/255.255.255.255
acl to_localhost dst 127.0.0.0/8
acl SSL_ports port 443 563
acl Safe_ports port 80          # http
acl Safe_ports port 21          # ftp
acl Safe_ports port 443 563     # https, snews
acl Safe_ports port 70          # gopher
acl Safe_ports port 210         # wais
acl Safe_ports port 1025-65535  # unregistered ports
acl Safe_ports port 280         # http-mgmt
acl Safe_ports port 488         # gss-http
acl Safe_ports port 591         # filemaker
acl Safe_ports port 777         # multiling http
acl Safe_ports port 8080
acl CONNECT method CONNECT
acl conncount maxconn 20
http_access deny conncount
http_access allow manager localhost
http_access deny manager
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow all
http_reply_access allow all
icp_access allow all
cache_effective_user squid
cache_effective_group squid
visible_hostname 192.168.18.114
redirect_rewrites_host_header off
httpd_accel_port 8080
httpd_accel_host virtual
httpd_accel_uses_host_header on
buffered_logs on
icp_access allow all
cache_mgr kiyo@dsez.net
coredump_dir /var/squid/cache
logfile_rotate 2
为了能够和squid相配合,修改apache的配置文件httpd.conf
一,修改apache监听端口
port 8080
二,修改虚拟主机设置的端口,举例如下
NameVirtualHost 192.168.18.114:8080
<VirtualHost 192.168.18.114:8080>
    ServerAdmin webmaster@dummy-host.example.com
    DocumentRoot /zhongsou
    ServerName test.test.com
</VirtualHost>
<VirtualHost 192.168.18.114:8080>
    ServerAdmin webmaster@dummy-host.example.com
    DocumentRoot /usr/local/apache/htdocs
    ServerName test.example.com
</VirtualHost>
所有的虚拟主机都要修改
其次为了能够正确记录来访者的IP,需要修改CustomLog
将%h改为%{X-Forwarded-For}i,其余不变
然后分别起动apache和squid
/usr/local/apache/bin/apachectl start
/usr/local/squid/sbin/squid -z
/usr/local/squid/sbin/squid -D
 
From:http://roadli.spaces.live.com/blog/cns!98deb1e47c7829cb!133.entry

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