安装配置Varnish3.0手记

最新推荐文章于 2017-11-22 21:33:00 发布

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最新推荐文章于 2017-11-22 21:33:00 发布

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本文介绍如何在内网VPS上安装并配置Varnish缓存服务器3.0版本，包括源码编译安装步骤、配置文件详解及启动脚本设置。

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在内网的vps上安装Varnish的最新版3.0来用做测试

Varnish有centos下的rpm和ubuntu下的deb二进制包下载，但我选择的是源码编译安装

先下载 wget http://repo.varnish-cache.org/source/varnish-3.0.0.tar.gz

tar -xzvf varnish-3.0.0.tar.gz

yum install gcc

yum install gcc-c++ libstdc++-devel

yum install -y httpd-devel pcre perl pcre-devel zlib zlib-devel GeoIP GeoIP-devel

Varnish需要pcre支持，如果服务器没有安装pcre-devel会提示需要指定prce目录。
Centos服务器上使用yum install pcre-devel安装

解压varnish进行编译安装

cd varnish-3.0.0

./autogen.sh

./configure --prefix=/usr/local/varnish PKG_CONFIG_PATH=/usr/lib/pkgconfig

make

make install

安装成功后,安装的目录是

cd /usr/local/varnish/sbin

./varnishd -V

查看版本，看是否安装成功

测试varnish

先编辑配置文件

vi /usr/local/varnish/etc/varnish/default.vcl

# 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 default {
     .host = " 192.168.88.156 ";
     .port = " 80 ";
     ###下面三行为新加配
     .connect_timeout = 1s;
     .first_byte_timeout = 5s;
     .between_bytes_timeout = 2s;
}
#
# 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 {
      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) {
          /* Not cacheable by default */
          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 {
      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 = 120 s;
                 return (hit_for_pass);
     }
      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>
#     <p>Varnish cache server</p>
#   </body>
# </html>
# " };
#      return (deliver);
# }
#
sub vcl_init {
         return (ok);
}
#
sub vcl_fini {
         return (ok);
}

/usr/local/varnish/sbin/varnishd -f /usr/local/varnish/etc/varnish/default.vcl -s malloc,1024m -T 127.0.0.1:200 -a 0.0.0.0:80

现在可以打开varnish了

http://192.168.88.1/ (开启varnish的端口号)

戴图显示，nginx 为177上运行的web服务器，出现了varnish字样，表示缓存架设成功，已正常工作了。

启动varnishncsa用来将Varnish访问日志写入日志文件：

/usr/local/varnish/bin/varnishncsa -n /var/vcache -w /var/logs/varnish.log &

配置开机自动启动Varnish

vi /etc/rc.local

　　在末尾增加以下内容：

引用

ulimit -SHn 51200
/usr/local/varnish/sbin/varnishd -n /var/vcache -f /usr/local/varnish/vcl.conf -a 0.0.0.0:80 -s file,/var/vcache/varnish_cache.data,1G -g www -u www -w 30000,51200,10 -T 127.0.0.1:3500 -p client_http11=on
/usr/local/varnish/bin/varnishncsa -n /var/vcache -w /var/logs/youvideo.log &

　优化Linux内核参数

vi /etc/sysctl.conf

　　在末尾增加以下内容：

引用

net.ipv4.tcp_fin_timeout = 30
net.ipv4.tcp_keepalive_time = 300
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.ip_local_port_range = 5000 65000

查看Varnish服务器连接数与命中率
/usr/local/varnish/bin/varnishstat

配置启动脚本：

mkdir /cache/varnish/V -p

vi /usr/local/varnish/sbin/start.sh

#!/bin/sh
#file:start.sh
date -u
/usr/local/varnish/sbin/varnishd -a 0.0.0.0:80 -s file,/cache/varnish/V,1024m -f /usr/local/varnish/etc/varnish/default.vcl -p thread_pool_max=1500 -p thread_pools=5 -p listen_depth=512

chmod 777 start.sh

运行：

/usr/local/varnish/sbin/start.sh

http://www.cnblogs.com/littlehb/archive/2012/02/11/2346319.html