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 varnish-3.0.0.rar 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 {” 

#  

#

# “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); 

} 

/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