varnish安装和配置过程

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配置环境  : Centos 6.3x86

编译安装varnish：
yum install -y automake autoconf libtool ncurses-devel libxslt groff pcre-devel pkgconfig
wgethttp://repo.varnish-cache.org/source/varnish-3.0.4.tar.gztar
zxvf varnish-3.0.4.tar.gz
cd varnish-3.0.4
./configure --prefix=/usr/local/varnish
make && make install

配置缓存存放+日志地址
mkdir -p /data/varnish/
chmod +w /data/varnish/
chown -R www:www /data/varnish/  ### 以网站权限运行

编辑配置文件:

1. [root@server110 ~]# vim /usr/local/varnish/default.vclbackend web1 {.host = "192.168.101.112";.port = "80";.connect_timeout = 1s;      #连接超时时间.first_byte_timeout = 8s;.between_bytes_timeout = 5s;}#backend web2 {#       .host = "xx.xx.xx.xx";#       .port = "80";#}acl purge {"localhost";"127.0.0.1";"192.168.101.0"/24;}sub vcl_recv {if (req.request == "PURGE") {if (!client.ip ~ purge){error 405 "Not allowed.";}return(lookup);}if (req.http.host ~ "^www.server110.com") {               #web1对应的域名set req.backend = web1;}#elseif (req.http.host ~ "^(www)|(my).baidu.com") {        #web2对应的域名#   set req.backend = web2;#}else {error 404 "Caesar's cache-server ! Email:[email protected]"; #如果域名不在以上范围的出错提示#set req.backend = web1;}if (req.request != "GET" && req.request != "HEAD") {return(pipe);}elseif (req.url ~ "\.(php|cgi)($|\?)")                #动态页面直接通过，不缓存{return(pass);}return(lookup);}sub vcl_hit {if (req.request == "PURGE") {set obj.ttl = 0s;error 200 "Purged.";}}sub vcl_miss{return (fetch);}##让varnish服务器缓存的类型，从后端取得数据后调用sub vcl_fetch{##对访问中get有包含jpg,png等格式的文件进行缓存，缓存时间为7天，s为秒if (req.request == "GET" && req.url ~ "\.(js|css|mp3|jpg|png|gif|swf|jpeg|ico)$"){ set beresp.ttl = 7d; }##对访问get中包含htm等静态页面，缓存300秒if (req.request == "GET" && req.url ~ "\/[0-9]\.htm$"){ set beresp.ttl = 300s; }return (deliver);}####添加在页面head头信息中查看缓存命中情况########sub vcl_deliver{set resp.http.x-hits = obj.hits ;if (obj.hits > 0){ set resp.http.X-Cache = "HIT cqtel-bbs"; }else { set resp.http.X-Cache = "MISS cqtel-bbs"; }}

复制代码

参数:
-u 以什么用运行
-g 以什么组运行
-f varnish配置文件
-a 绑定IP和端口
-s varnish缓存文件位置与大小
-w 最小，最大线程和超时时间
-t 缓存时间s
-T varnish管理端口，主要用来清除缓存
-p client_http11=on 支持http1.1协议
-P(大P) /usr/local/varnish/var/varnish.pid 指定其进程码文件的位置，实现管理
停止varnish
pkill varnishd   ###结束varnishd进程

启动 varnish
/usr/local/varnish/sbin/varnishd -u www -g www -f /usr/local/varnish/default.vcl -a 192.168.101.111:80 -s file,/data/varnish/cache/varnish_cache.data,1G -w 1024,51200,10 -t 3600 -T 192.168.101.111:3000
追加 varnish 启动项到开机启动
echo "/usr/local/varnish/sbin/varnishd -u www -g www -f /usr/local/varnish/default.vcl -a 192.168.101.111:80 -s file,/data/varnish/cache/varnish_cache.data,1G -w 1024,51200,10 -t 3600 -T 192.168.101.111:3000" >> /etc/rc.local
启动日志,方便分析网站访问情况
/usr/local/varnish/bin/varnishncsa -w /data/varnish/logs/varnish.log & echo "/usr/local/varnish/bin/varnishncsa -w /data/varnish/logs/varnish.log &" >> /etc/rc.local
参数: -w 指定varnish访问日志要写入的目录与文件

varnish日志切割

[root@server110 ~]# vim /data/shell/cut_varnish_log.sh #!/bin/sh logs_path=/data/varnish/logs vlog=${logs_path}/varnish.log date=$(date -d "yesterday" +"%Y-%m-%d") pkill -9 varnishncsa mkdir -p ${logs_path}/$(date -d "yesterday" +"%Y")/$(date -d"yesterday" +"%m")/ mv /data/varnish/logs/varnish.log ${logs_path}/$(date -d"yesterday" +"%Y")/$(date -d "yesterday"+"%m")/varnish-${date}.log /usr/local/varnish/bin/varnishncsa -w/data/varnish/logs/varnish.log & 使用计划任务,每天晚上凌晨00点运行日志切割脚本 echo "0 0 * * * /data/shell/cut_varnish_log.sh" >>/etc/crontab

其他设置 {清除缓存,命中率等 }
/usr/local/varnish/bin/varnishadm -T 192.168.101.111:3000 purge "req.http.host ~ www.server110.com$ && req.url ~ /static/image/tp.php"
详细介绍：
192.168.101.111:3000 ###为被清除缓存服务器地址
www.server110.com  ###为被清除的域名
/static/image/tp.php ###为被清除的url地址列表
清除所有缓存
/usr/local/varnish/bin/varnishadm -T 192.168.9.201:3000 url.purge *$
清除image目录下所有缓存
/usr/local/varnish/bin/varnishadm -T 192.168.9.201:3000 url.purge /image/
查看Varnish服务器连接数与命中率
/usr/local/varnish/bin/varnishstat –n /data/varnish/cache/varnish_cache.data