一. varnish1.安装pcre库,兼容正则表达式# tar -zxvf pcre-8.10.tar.gz# cd pcre-8.10# ./configure --prefix=/usr/local/pcre# make && make install2.配置安装varnish# tar -zxvf varnish-3.0.2.tar.gz# cd varnish-3.0.2# export PKG_CONFIG_PATH=/usr/local/pcre/lib/pkgconfig/# ./configure --prefix=/usr/local/varnish# make && make install3.修改varnish配置文件/usr/local/varnish/etc/varnish/default.vcl# mv default.vcl default.vcl.bak# vi cq.vclbackend cqserver {.host = "127.0.0.1";.port = "8087";.connect_timeout = 20s;}acl purge {"localhost";"127.0.0.1";"192.168.1.0"/24;}sub vcl_recv {if (req.request == "PURGE") {if (!client.ip ~ purge) {error 405 "Not allowed.";}return (lookup);}if (req.http.host ~ "^www.baidu.com") {set req.backend = cqserver;if (req.request != "GET" && req.request != "HEAD") {return (pipe);}else{return (lookup);}}else {error 404 "caoqing Cache Server";return (lookup);}}sub vcl_hit {if (req.request == "PURGE") {set obj.ttl = 0s;error 200 "Purged.";}}sub vcl_miss {if (req.request == "PURGE") {error 404 "Not in cache.";}}(1)Varnish通过反向代理请求后端IP为127.0.0.1,端口为8087的web服务器,即nginx服务器监听端口;(2)Varnish允许localhost、127.0.0.1、192.168.1.*三个来源IP通过PURGE方法清除缓存;(3)Varnish对域名为www.baidu.com的请求进行处理,非www.baidu.com域名的请求则返回"caoqing Cache Server";(4)Varnish对HTTP协议中的GET、HEAD请求进行缓存,对POST请求透过,让其直接访问后端Web服务器。4.启动varnish# cd /usr/local/varnish/sbin/# ./varnishd -f /usr/local/varnish/etc/varnish/cq.vcl -s file,/var/varnish_cache,1G -T 127.0.0.1:2000 -a 0.0.0.0:80二. nginx1.安装nginx# rpm -ivh zlib-devel-1.2.3-4.el5.i386.rpm# tar zxvf nginx-1.4.1.tar.gz# cd nginx-1.4.1# ./configure --prefix=/usr/local/nginx --with-openssl=/usr/lib --with-pcre=/root/tool/pcre-8.10 --with-http_stub_status_module# make && make install2.启动nginx# cd /usr/local/nginx/sbin# ./nginx3.修改ngnix配置文件测试配置文件/usr/local/nginx/sbin/./nginx -t# cd /usr/local/nginx/conf# vi nginx.conf#使用的用户和组user root root;#制定工作衍生进程数(一般为CPU总核数两倍)worker_processes 8;#制定文件描述符数量worker_rlimit_nofile 51200;#指定错误日志存放路径error_log logs/error.log#指定pid存放路径pid logs/nginx.pid;event{ #使用网络I/O模型 use epoll;#允许的连接数 worker_connections 65535;}http {#访问日志存放路径 access_log logs/access.log;#开启gzip压缩 gzip on; gzip_min_length 1000; gzip_proxied expired no-cache no-store private auth; gzip_types text/plain text/css text/xml text/javascript application/x-javascript application/xml application/rss+xml application/xhtml+xml application/atom_xml; gzip_disable "MSIE [1-6].(?!.*SV1)";#限定PHP-CGI的连接、发送和读取的时间为300s fastcgi_connect_timeout 300s; fastcgi_send_timeout 300s; fastcgi_read_timeout 300s;#虚拟主机配置server {#监听端口 listen 8087;#主机名称 server_name 127.0.0.1;#google提供的DNS服务 resolver 8.8.8.8 location / {#nginx作为HTTP代理服务器 proxy_pass http://$http_host$request_uri; proxy_set_header Accept-Encoding ''; proxy_redirect off; }}}三. 排错优化1)修改环境变量vi ~/.bashrcPATH=$PATH:/usr/local/nginx/sbin:/usr/local/varnish/sbin:/usr/local/varnish/binexport PATH2)nginx启动与关闭参数:-v:查看版本-V:查看配置模块-t:查看配置文件是否正确-c:制定其他配置文件pkill -9 nginx3)varnish启动与关闭参数: -u:以什么用户运行-g:以什么组运行-f:varnish配置文件 -a:绑定IP和端口-s:varnish缓存位置和大小-w:最小,最大线程和超时时间-T:varnish管理端口,主要用来清除缓存pkill varnishdvarnish服务动态加载配置文件 #varnishadm -T 127.0.0.1:2000vcl.load vcl-name_vcl "配置文件路径" # vcl-name 这里可以任意取名 vcl.use vcl-namevcl.show vcl-name #显示vcl-name配置文件内容 # varnishncsa -w /usr/local/varnish/logs/varnish.log将输出日志写入到制定日志文件。4)修改windows客户端C:\Windows\System32\drivers\etc\hosts192.168.1.202 www.baidu.com