如何安装与使用varnish3.0

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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 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 

复制代码

代码如下:

# 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： 

复制代码

代码如下:

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

配置开机自动启动Varnish 

复制代码

代码如下:

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 

复制代码

代码如下:

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

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