varnish安装步骤

1.

安装环境，其他软件，varnish需要这些软件的支持。

yum install -y automake autoconf libtool ncurses-devel libxslt groff pcre-devel pkgconfig   libedit*

2.

wget http://jaist.dl.sourceforge.net/project/pcre/pcre/8.34/pcre-8.34.zip

手动下载地址：http://sourceforge.net/projects/pcre/files/pcre/

安装pcre

unzip -o pcre-8.34.zip
cd pcre-8.34
./configure --prefix=/usr/local/pcre/
make
make install

3

安装varnish

wget http://repo.varnish-cache.org/source/varnish-3.0.4.tar.gz

tar zxvf varnish-3.0.4.tar.gz
cd varnish-3.0.4
export PKG_CONFIG_PATH=/usr/local/pcre/lib/pkgconfig/
./configure --prefix=/usr/local/varnish --enable-dependency-tracking --enable-debugging-symbols --enable-developer-warnings
make
make install
cp redhat/varnish.initrc  /etc/init.d/varnish  --varnish的启动脚本
cp redhat/varnish.sysconfig  /etc/sysconfig/varnish  --varnish配置文件
cp redhat/varnish_reload_vcl /usr/local/varnish/bin/ --此文件用于修改配置文件后重新加载，这样避免重启造成已缓存文件丢失



新建文件，用来做缓存输出。
mkdir /data/varnish/cache
touch /data/varnish/cache/varnish_cache.data


修改配置

/usr/local/varnish/etc/varnish/default.vcl修改,配置

启动

/usr/local/varnish/sbin/varnishd -f /usr/local/varnish/etc/varnish/default.vcl -s file, ,2G -T 192.168.1.216:2000 -a 

注：192.168.1.216:100

192.168.1.216:2000是通过telnet访问的端口，-a后面的192.168.1.216:100是监听的http。也就是访问192.168.1.216:100,varnish就会执行，反向代理到后端主机



关闭varnish命令
pkill varnishd

端口访问：telnet 192.168.1.216 2000

如果无法没有找到telnet：yuminstalltelnet

/usr/local/varnish/bin/varnishlog -n /data/varnish/cache
/usr/local/varnish/bin/varnishstat -n /data/varnish/cache


用url访问查看是否缓存(X-Cache)
/usr/bin/curl -I 192.168.1.216:100

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

域名实例：

开启varnish：

#########################/usr/local/varnish/sbin/varnishd -f /usr/local/varnish/etc/varnish/default.vcl -s file, ,1G -T www.51buylink.com:2000 -a www.51buylink.com:80 //注释

标准开启写法（上面的哪行是错误的，在magento站不会更新）：/usr/local/varnish/sbin/varnishd -f /usr/local/varnish/etc/varnish/default.vcl -s file, ,1G -T www.51buylink.com:2000 -a :80

default.vcl:

backend default1 {
  .host = "113.10.149.150";
  .port = "81";
}

nginx.conf

listen      81;
server_name 113.10.149.150,www.51buylink.com;
root /www/web/51buylink.com;

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

记录varnish日志
/usr/local/varnish/bin/varnishncsa -w /data/logs/varnish.log &
查看命中率：
/usr/local/varnish/bin/varnishstat

1675         0.00         0.06 Client requests received   为服务端接收的客户端请求次数
179         0.00         0.01 Cache hits    为命中缓存，从缓存中取得数据返回给客户端的次数，即命中率
11         0.00         0.00 Cache misses  为跳过pass缓存，从后端服务应用中取得数据返回给用户的次数，及查找缓存没有命中的

用help看看可以使用哪些Varnish命令：
/usr/local/varnish-2.1.3/bin/varnishadm -T 127.0.0.1:3500 help

default.vcl的配置：
# This is a basic VCL configuration file for PageCache powered by Varnish for Magento module.


# default backend definition.  Set this to point to your content server.
backend default1 {
  .host = "192.168.1.216";
  .port = "80";
}


backend default2 {
  .host = "192.168.1.215";
  .port = "80";
}


# admin backend with longer timeout values. Set this to the same IP & port as your default server.




director webserver random{
{.backend = default1; .weight = 5;}
{.backend = default2; .weight = 5;}
}
# add your Magento server IP to allow purges from the backend
acl purge {
  "localhost";
  "127.0.0.1";
}


import std;


sub vcl_recv {
set req.backend = webserver;
    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" &&
        req.request != "PURGE") {
        /* Non-RFC2616 or CONNECT which is weird. */
        return (pipe);
    }


    # purge request
    if (req.request == "PURGE") {
        if (!client.ip ~ purge) {
            error 405 "Not allowed.";
        }
        ban("obj.http.X-Purge-Host ~ " + req.http.X-Purge-Host + " && obj.http.X-Purge-URL ~ " + req.http.X-Purge-Regex + " && obj.http.Content-Type ~ " + req.http.X-Purge-Content-Type);
        error 200 "Purged.";
    }


    # switch to admin backend configuration
    if (req.http.cookie ~ "adminhtml=") {
      //  set req.backend = admin;
    }


    # we only deal with GET and HEAD by default
    if (req.request != "GET" && req.request != "HEAD") {
        return (pass);
    }


    # normalize url in case of leading HTTP scheme and domain
    set req.url = regsub(req.url, "^http[s]?://[^/]+", "");


    # collect all cookies
    std.collect(req.http.Cookie);


    # static files are always cacheable. remove SSL flag and cookie
    if (req.url ~ "^/(media|js|skin)/.*\.(png|jpg|jpeg|gif|css|js|swf|ico)$") {
        unset req.http.Https;
        unset req.http.Cookie;
    }


    # not cacheable by default
    if (req.http.Authorization || req.http.Https) {
        return (pass);
    }


    # do not cache any page from index files
    if (req.url ~ "^/(index)") {
        return (pass);
    }


    # as soon as we have a NO_CACHE cookie pass request
    if (req.http.cookie ~ "NO_CACHE=") {
        return (pass);
    }


    # remove Google gclid parameters
    set req.url = regsuball(req.url,"\?gclid=[^&]+$",""); # strips when QS = "?gclid=AAA"
    set req.url = regsuball(req.url,"\?gclid=[^&]+&","?"); # strips when QS = "?gclid=AAA&foo=bar"
    set req.url = regsuball(req.url,"&gclid=[^&]+",""); # strips when QS = "?foo=bar&gclid=AAA" or QS = "?foo=bar&gclid=AAA&bar=baz"


    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);
    }


    if (req.http.cookie ~ "PAGECACHE_ENV=") {
        set req.http.pageCacheEnv = regsub(
            req.http.cookie,
            "(.*)PAGECACHE_ENV=([^;]*)(.*)",
            "\2"
        );
        hash_data(req.http.pageCacheEnv);
        remove req.http.pageCacheEnv;
    }


    if (!(req.url ~ "^/(media|js|skin)/.*\.(png|jpg|jpeg|gif|css|js|swf|ico)$")) {
        call design_exception;
    }
    return (hash);
}
#
# sub vcl_hit {
#     return (deliver);
# }
#
# sub vcl_miss {
#     return (fetch);
# }


sub vcl_fetch {
    if (beresp.status == 500) {
       set beresp.saintmode = 10s;
       return (restart);
    }
    set beresp.grace = 5m;


    # enable ESI feature if needed
    if (beresp.http.X-Cache-DoEsi == "1") {
        set beresp.do_esi = true;
    }


    # add ban-lurker tags to object
    set beresp.http.X-Purge-URL = req.url;
    set beresp.http.X-Purge-Host = req.http.host;


    if (beresp.status == 200 || beresp.status == 301 || beresp.status == 404) {
        if (beresp.http.Content-Type ~ "text/html" || beresp.http.Content-Type ~ "text/xml") {
            if ((beresp.http.Set-Cookie ~ "NO_CACHE=") || (beresp.ttl < 1s)) {
                set beresp.ttl = 0s;
                return (hit_for_pass);
            }


            # marker for vcl_deliver to reset Age:
            set beresp.http.magicmarker = "1";


            # Don't cache cookies
            unset beresp.http.set-cookie;
        } else {
            # set default TTL value for static content
            set beresp.ttl = 4h;
        }
        return (deliver);
    }


    return (hit_for_pass);
}


sub vcl_deliver {
    # debug info
    if (resp.http.X-Cache-Debug) {
        if (obj.hits > 0) {
            set resp.http.X-Cache = "HIT";
            set resp.http.X-Cache-Hits = obj.hits;
        } else {
           set resp.http.X-Cache = "MISS";
        }
        set resp.http.X-Cache-Expires = resp.http.Expires;
    } else {
        # remove Varnish/proxy header
        remove resp.http.X-Varnish;
        remove resp.http.Via;
        remove resp.http.Age;
        remove resp.http.X-Purge-URL;
        remove resp.http.X-Purge-Host;
    }


    if (resp.http.magicmarker) {
        # Remove the magic marker
        unset resp.http.magicmarker;


        set resp.http.Cache-Control = "no-store, no-cache, must-revalidate, post-check=0, pre-check=0";
        set resp.http.Pragma = "no-cache";
        set resp.http.Expires = "Mon, 31 Mar 2008 10:00:00 GMT";
        set resp.http.Age = "0";
    }
}


# sub vcl_error {
#     set obj.http.Content-Type = "text/html; charset=utf-8";
#     set obj.http.Retry-After = "5";
#     synthetic {"
#
# #  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
#
#  
#    
#  
#  
#    

Error "} + obj.status + " " + obj.response + {"

#    

"} + obj.response + {"

#    

Guru Meditation:

#    

XID: "} + req.xid + {"

#    

---

#    

Varnish cache server

#  
#
# "};
#     return (deliver);
# }
#
# sub vcl_init {
#   return (ok);
# }
#
# sub vcl_fini {
#   return (ok);
# }


sub design_exception {
}