varnish配置實例

vim /usr/local/varnish3.0/etc/varnish/default.vcl #设置后端服务 backend linuxidc {     .host = "192.168.100.5";     .port = "80";     .connect_timeout = 1s;     .first_byte_timeout = 5s;     .between_bytes_timeout = 2s; } backend 88181 {     .host = "192.168.100.6";     .port = "80";     .connect_timeout = 1s;     .first_byte_timeout = 5s;     .between_bytes_timeout = 2s; } #定义负载均衡 director lb_test random {     {       .backend = linuxidc;       .weight = 5;      }      {        .backend = 88181;        .weight = 5;      } } #定义访问控制列表 acl purge {     "localhost";     "127.0.0.1";     "192.168.100.0"/24;     "192.168.0.0"/24; } sub vcl_recv { #开启压缩模式，图片格式取消压缩 if (req.http.Accept-Encoding) {     if (req.url ~ "\.(jpg|png|gif|jpeg|flv)" ) {         remove req.http.Accept-Encoding;         remove req.http.Cookie;     } else if (req.http.Accept-Encoding ~ "gzip") {         set req.http.Accept-Encoding = "gzip";     } else if (req.http.Accept-Encoding ~ "deflate") {         set req.http.Accept-Encoding = "deflate";     } else {         remove req.http.Accept-Encoding;     } } #根据host设置后端服务器   if (req.http.Host ~ "(?i)(www.linuxidc.com|www.88181.com)") {      set req.backend = lb_test;    }else   if (req.http.Host ~ "(?i)image.Android.com"){      set req.backend = linuxidc;   }else   {     error 408 "Hostname not found";    }   #如果为purge请求，客户端ip不在访问列表中，返回405拒绝   if (req.request == "PURGE") {      if (!client.ip ~purge) {        error 405 "Not Allowed";    } #本地缓存查找    return(lookup);   } #如果为GET请求，url后缀为jpg,png,gif等 取出cookie   if (req.request == "GET"&&req.url ~ "(?i)\.(jpg|png|gif|swf|jpeg|ico)$") {         unset req.http.cookie;   } #如果GET请求，url为php，则穿过cache，不缓存   if (req.request =="GET"&&req.url ~ "(?i)\.php($|\?)"){         return (pass);   } #简单防盗链 if (req.http.referer ~ "http://.*") {   if ( !(req.http.referer ~ "http://.*linuxidc\.com"      || req.http.referer ~ "http://.*88181\.com"      || req.http.referer ~ "http://.*android\.com"      || req.http.referer ~ "http://.*google\.com"      || req.http.referer ~ "http://.*baidu\.com"      || req.http.referer ~ "http://.*yahoo\.cn"   )) {       error 404 "Not Found!";  } } #获取客户端ip #     if (req.restarts == 0) {         if (req.http.x-forwarded-for) {             set req.http.X-Forwarded-For =                 req.http.X-Forwarded-For + ", " + client.ip;         } else {             set req.http.X-Forwarded-For = client.ip;         } #   } #不是以下请求进入pipe模块     if (req.request != "GET" &&       req.request != "HEAD" &&       req.request != "PUT" &&       req.request != "POST" &&       req.request != "TRACE" &&       req.request != "OPTIONS" &&       req.request != "DELETE") {         /* Non-RFC2616 or CONNECT which is weird. */         return (pipe);     } #不是GET 和HEAD请求不缓存     if (req.request != "GET" && req.request != "HEAD") {         /* We only deal with GET and HEAD by default */         return (pass);     }     if (req.http.Authorization) {         /* Not cacheable by default */         return (pass);     }     return (lookup); } #   sub vcl_pipe {      return (pipe);  } #  sub vcl_pass {     return (pass); } #使用url+host hash算法查找数据 sub vcl_hash {     hash_data(req.url);     if (req.http.host) {         hash_data(req.http.host);     } else {         hash_data(server.ip);     }     return (hash); } # 如果请求为purge 将清除缓存 sub vcl_hit {    if (req.request == "PURGE") {        set obj.ttl = 0s;        error 200 "Purged";     }     return (deliver); } sub vcl_miss {     return (fetch); } #  sub vcl_fetch {     if (beresp.ttl <= 0s ||         beresp.http.Set-Cookie ||         beresp.http.Vary == "*") {                 /*                  * Mark as "Hit-For-Pass" for the next 2 minutes                  */                 set beresp.ttl = 0 s;                 return (hit_for_pass);     }     if (beresp.http.Pragma ~"no-cache" ||      beresp.http.Cache-Control ~"no-cache" ||     beresp.http.Cache-Control ~"private") {       return (deliver);    } #为特定格式文件设置缓存时间     if (req.request == "GET"&&req.url ~ "(?i)\.(js|css|mp3|jpg|png|gif|swf|jpeg|ico)$") {     set beresp.ttl = 30d;   }    if (req.request == "GET"&&req.url ~ "(?i)\.(html|htm)$") {     set beresp.ttl = 1d;   }     return (deliver); } # 设置返回状态  sub vcl_deliver {      set resp.http.x-hits = obj.hits;      if (obj.hits > 0) {       set resp.http.X-Cache = "Hit test.com";    }else {        set resp.http.X-Cache = "Miss test.com";    }      set resp.http.Server = "BWM";      return (deliver);  } # 定义错误 sub vcl_error {     set obj.http.Content-Type = "text/html; charset=utf-8";     set obj.http.Retry-After = "5";     synthetic {" <?xml version="1.0" encoding="utf-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html>   <head>     <title>"} + obj.status + " " + obj.response + {"</title>   </head>   <body>     <h1>Error "} + obj.status + " " + obj.response + {"</h1>     <p>"} + obj.response + {"</p>     <h3>Guru Meditation:</h3>     <p>XID: "} + req.xid + {"</p>     <hr>     <p>Varnish cache server</p>   </body> </html> "};     return (deliver); } sub vcl_init {         return (ok); } sub vcl_fini {         return (ok); } 四、启动 启动命令 /usr/local/varnish3.0/sbin/varnishd  -f /usr/local/varnish3.0/etc/varnish/default.vcl  -s malloc,2G  -a 0.0.0.0:80 -w 1024,51200,10 -t  3600 -T 192.168.100.2:3500 检测配置文件是否存在错误 /usr/local/varnish3.0/sbin/varnishd －C -f /usr/local/varnish3.0/etc/varnish/default.vcl 参数 －a  address:port 监听端口 －f  指定配置文件 －s 指定缓存类型 malloc为内存， file 文件缓存 －t 默认TTL －T address:port 管理端口 －w 最小线程，最大线程，超时时间 记录varnish日志  /usr/local/varnish3.0/bin/varnishncsa -w /var/logs/varnish.log & 五、缓存刷新 php脚步如下 <?php    function purge($ip, $url)    {        $errstr = '';        $errno = '';        $fp = fsockopen ($ip, 80, $errno, $errstr, 2);        if (!$fp)        {             return false;        }        else       {            $out = "PURGE $url HTTP/1.1\r\n";            $out .= "Host:image.android.com\r\n";            $out .= "Connection: close\r\n\r\n";            fputs ($fp, $out);            $out = fgets($fp , 4096);            fclose ($fp);             return true;        }    }    if(isset($_POST['content'])) { //$str=str_replace("\r","<br>",$_POST[content]); $arr=(explode("\n",$_POST['content'])); $Server="192.168.100.2"; foreach ($arr as $value) {   echo $value;   purge($Server, $value);      echo "刷新成功"."<br />"; } //purge($Server, "$_POST[content]");    //echo "刷新成功"; } ?>  <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>varnish缓存刷新</title> </head> <body> <form action="?" method="post"> 填写需要刷新url<br /> <textarea name="content" cols="40" rows="10"></textarea> <input type="submit" value="submit" /> </form> </body> </html> ＃＃＃＃＃＃＃＃＃＃＃ 通过管理端口清除缓存 telnet 192.168.100.2 3500 3.0版本 为ban.url aaaa.html 2.版本为purge.url aaaa.html