CentOS系统安装配置varnish服务器

采用redhat，rpm安装方式。
rpm --nosignature -i http://repo.varnish-cache.org/redhat/varnish-3.0/el5/noarch/varnish-release-3.0-1.noarch.rpm
yum install varnish
配置文件在 /etc/varnish/default.vcl 和 /etc/sysconfig/varnish
以下为我的配置文件。

# This is a basic VCL configuration file for varnish.  See the vcl(7)
# man page for details on VCL syntax and semantics.
# Default backend definition.  Set this to point to your content
# server.
backend webserver1 {
 .host = “8.8.8.8″;
 .port = “81″;
 .probe = {
         .url = “/”;
         .interval = 5s;
         .timeout = 5 s;
         .window = 10;
         .threshold = 8;
    }
}
backend webserver2 {
 .host = “8.8.8.8″;
 .port = “83″;
 .probe = {
         .url = “/”;
         .interval = 5s;
         .timeout = 5 s;
         .window = 10;
         .threshold = 8;
    }
}
#director webserver round-robin {
# { .backend = webserver1; }
# { .backend = webserver2; }
#}
director webserver random {
        .retries = 6;
{
        .backend = webserver1;
        .weight = 2;
}
{
        .backend = webserver2;
        .weight = 2;
}
}
#director webserver random {
#    { .backend = www; .weight = 2; }
#    { .backend = { .host = “www2.example.com”; .port = “http”; } .weight = 1; }
#}
acl purge {
        “localhost”;
        “127.0.0.1″;
}
# Below is a commented-out copy of the default VCL logic.  If you
# redefine any of these subroutines, the built-in logic will be
# appended to your code.
 sub vcl_recv {
  # Only cache the following site
# if (req.http.host ~ “(app.iamle.com)”) {
#   set req.backend = webserver;
#  } else {
#   return (pass);
#  }
  if (req.http.host ~ “^(.*?)iamle.com$”) {
        set req.backend = webserver;
    }
  else {
error 404 “Unknown HostName!”;
  }
  if (req.request == “PURGE”) {
if (!client.ip ~ purge) {
error 405 “Not allowed.”;
}
return (lookup);
        }
     if (req.request ==”GET”&&req.url ~ “(?i)\.php($|\?)”){
        return (pass);
     }
 if (req.request == “GET” && req.url ~ “\.(js|css|jpg|png|gif|swf|flv|ico|jpeg|htm|html)$”) {
  unset req.http.COOKIE;
 }
#    if (req.url ~ “^/[^?]+\.(jpeg|jpg|png|gif|ico|js|css|swf|flv|htm|html|shtm)(\?.*|)$”) {
#      unset req.http.COOKIE;
#       set req.url = regsub(req.url, “\?.*$”, “”);
#    }
  if (req.url ~ “^/$”) {
       unset req.http.COOKIE;
    }
#    if (req.request ==”GET”&&req.url ~ “(?i)\.shtml($|\?)”){
#       unset req.http.COOKIE;
#   }
     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.http.Authorization || req.http.COOKIE ~ “wordpress_logged” || req.http.COOKIE ~ “comment_”) {
#         /* Not cacheable by default */
#         return (pass);
#     }
# nocache authorization
#     if (req.http.Authorization) {
#         return (pass);
#     }
     if (req.http.Authorization || req.http.COOKIE) {
         return (pass);
     }
     return (lookup);
}
 
 sub vcl_pipe {
     # Note that only the first request to the backend will have
     # X-Forwarded-For set.  If you use X-Forwarded-For and want to
     # have it set for all requests, make sure to have:
     # set bereq.http.cOnnection= “close”;
     # here.  It is not set by default as it might break some broken web
     # applications, like IIS with NTLM authentication.
     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 ~ “^/$”) {
  unset beresp.http.set-COOKIE;
  set beresp.ttl = 10m;
  set beresp.do_gzip = true;
  unset beresp.http.Cache-Control;
  unset beresp.http.Pragma;
  set beresp.http.Cache-COntrol= “max-age=600″;
  unset beresp.http.Expires;
     }
#    if (req.request ==”GET”&&req.url ~ “(?i)\.shtml($|\?)”){
#    unset beresp.http.set-COOKIE;
#       set beresp.ttl = 10m;
#    set beresp.do_gzip = true;
#     unset beresp.http.Cache-Control;
#    unset beresp.http.Pragma;
#    set beresp.http.Cache-COntrol= “max-age=600″;
#    unset beresp.http.Expires;
#    }    
     if (beresp.ttl <= 0s ||
beresp.http.Set-COOKIE ||
         beresp.http.Vary == “*”) {
   /*
    * Mark as “Hit-For-Pass” for the next 2 minutes
    */
   set beresp.ttl = 120 s;
   return (hit_for_pass);
     }
#    if (beresp.http.Pragma ~ “no-cache” ||
#        beresp.http.Cache-Control ~ “no-cache” ||
#        beresp.http.Cache-Control ~ “private”) {
#        return(deliver);
#     }
     if(beresp.status == 404 || beresp.status == 300) {
        error 404;
     }
     if (req.request == “GET” && req.url ~ “\.(jpg|png|gif|swf|flv|ico|jpeg)$”) {
        set beresp.ttl = 3h;
     }
#     if (req.request == “GET” && req.url ~ “\.(htm|html|shtml)$”) {
#        set beresp.ttl = 1h;
#     }
 set beresp.ttl = 1h;
     return (deliver);
 }
 
 sub vcl_deliver {
 set resp.http.x-hits = obj.hits;   
 if (obj.hits > 0) {
  set resp.http.X-Cache = “cached”;
 } else {
  set resp.http.x-Cache = “uncached”;
   }
# Remove some headers: PHP version
 unset resp.http.X-Powered-By;  
# Remove some headers: Apache version & OS
 unset resp.http.Server;
    return (deliver);
 }
 sub vcl_error {
     set obj.http.Content-Type = “text/html; charset=utf-8″;
     set obj.http.Retry-After = “5″;
     synthetic {”
 
 
 
   
     
   
   
     Error “} + obj.status + ” ” + obj.response + {“
     
”} + obj.response + {“
     
Guru Meditation:
     
XID: “} + req.xid + {“
     

     
www.iamle.com cache server
   
 
 ”};
     return (deliver);
 }
 sub vcl_init {
  return (ok);
 }
 sub vcl_fini {
  return (ok);
 }