Varnish cache setup

March 15, 2012

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7482 words

Installation on Debian

echo "deb http://repo.varnish-cache.org/debian/ squeeze varnish-3.0" >> /etc/apt/sources.list
apt-get update
apt-get install varnish

配置默认的端口：

nano /etc/default/varnish

DAEMON_OPTS="-a :80 \
             -T localhost:6082 \
              -f /etc/varnish/default.vcl \
             -S /etc/varnish/secret \
             -s malloc,256m"

配置default.vcl文件

nano /etc/varnish/default.vcl

配置文件代码如下，唯一需要修改的是www.yyphs.com改为你的博客域名，如果有多个，可以使用|分隔。

backend default {
.host = "服务器的ip";
.port = "80";
}
acl purge {
        "localhost";
        "127.0.0.1";
}
sub vcl_recv {
        # Only cache the following site
        if (req.http.host ~ "(www.yyphs.com)") {
                set req.backend = default;
        } else {
                return (pass);
        }
if (req.request == "PURGE") {
                if (!client.ip ~ purge) {
                        error 405 "Not allowed.";
                }
                return (lookup);
        }

     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;
        }
     }
     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);
     }
     if (req.request != "GET" && req.request != "HEAD") {
         /* We only deal with GET and HEAD by default */
         return (pass);
     }
if (req.url ~ "^/wp-content") {
        unset req.http.cookie;
    }
     if (req.http.Authorization || req.http.Cookie ~ "wordpress_logged" || req.http.Cookie ~ "comment_") {
         return (pass);
     }
     return (lookup);
}
sub vcl_pipe {
     return (pipe);
}
sub vcl_pass {
     return (pass);
}
sub vcl_hash {
     hash_data(req.url);
     if (req.http.host) {
         hash_data(req.http.host);
     } else {
         hash_data(server.ip);
     }
     return (hash);
}
sub vcl_hit {
if (req.request == "PURGE") {
                purge;
                error 200 "Purged.";
        }
     return (deliver);
}
sub vcl_miss {
if (req.request == "PURGE") {
                purge;
                error 200 "Purged.";
        }
     return (fetch);
}
sub vcl_fetch {
if (req.url ~ "^/wp-content") {
        unset beresp.http.set-cookie;
    }
     if (beresp.ttl <= 0s ||
         beresp.http.Set-Cookie ||
         beresp.http.Vary == "*") {
                set beresp.ttl = 120 s;
                return (hit_for_pass);
     }
set beresp.ttl = 7d;
     return (deliver);
}
sub vcl_deliver {
     return (deliver);
}
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>
&nbs
p;   <p>Varnish cache server</p>
   </body>
</html>
"};
     return (deliver);
}
sub vcl_init {
        return (ok);
}
sub vcl_fini {
        return (ok);
}