安装配置Varnish3.0手记-it论坛-系统架构论坛-运维论坛

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安装配置Varnish3.0手记-it论坛-系统架构论坛-运维论坛


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

1. # This is a basic VCL configuration file for varnish.  See the vcl(7)
   
2. # man page for details on VCL syntax and semantics.
   
3. #
   
4. # Default backend definition.  Set this to point to your content
   
5. # server.
   
6. #
   
7. backend default {
   
8.      .host = "192.168.88.156";
   
9.      .port = "80";
   
10.      ###下面三行为新加配
    
11.      .connect_timeout = 1s;
    
12.      .first_byte_timeout = 5s;
    
13.      .between_bytes_timeout = 2s;
    
14. }
    
15. #
    
16. # Below is a commented-out copy of the default VCL logic.  If you
    
17. # redefine any of these subroutines, the built-in logic will be
    
18. # appended to your code.
    
19. sub vcl_recv {
    
20.      if (req.restarts == 0) {
    
21.         if (req.http.x-forwarded-for) {
    
22.             set req.http.X-Forwarded-For =
    
23.                 req.http.X-Forwarded-For + ", " + client.ip;
    
24.         } else {
    
25.             set req.http.X-Forwarded-For = client.ip;
    
26.         }
    
27.      }
    
28.      if (req.request != "GET" &&
    
29.        req.request != "HEAD" &&
    
30.        req.request != "PUT" &&
    
31.        req.request != "POST" &&
    
32.        req.request != "TRACE" &&
    
33.        req.request != "OPTIONS" &&
    
34.        req.request != "DELETE") {
    
35.          /* Non-RFC2616 or CONNECT which is weird. */
    
36.          return (pipe);
    
37.      }
    
38.      if (req.request != "GET" && req.request != "HEAD") {
    
39.          /* We only deal with GET and HEAD by default */
    
40.          return (pass);
    
41.      }
    
42.      if (req.http.Authorization || req.http.Cookie) {
    
43.          /* Not cacheable by default */
    
44.          return (pass);
    
45.      }
    
46.      return (lookup);
    
47. }
    
48. #
    
49. sub vcl_pipe {
    
50. #     # Note that only the first request to the backend will have
    
51. #     # X-Forwarded-For set.  If you use X-Forwarded-For and want to
    
52. #     # have it set for all requests, make sure to have:
    
53. #     # set bereq.http.connection = "close";
    
54. #     # here.  It is not set by default as it might break some broken web
    
55. #     # applications, like IIS with NTLM authentication.
    
56.      return (pipe);
    
57. }
    
58. #
    
59. sub vcl_pass {
    
60.      return (pass);
    
61. }
    
62. #
    
63. sub vcl_hash {
    
64.      hash_data(req.url);
    
65.      if (req.http.host) {
    
66.          hash_data(req.http.host);
    
67.      } else {
    
68.          hash_data(server.ip);
    
69.      }
    
70.      return (hash);
    
71. }
    
72. #
    
73. sub vcl_hit {
    
74.      return (deliver);
    
75. }
    
76. #
    
77. sub vcl_miss {
    
78.      return (fetch);
    
79. }
    
80. #
    
81. sub vcl_fetch {
    
82.      if (beresp.ttl <= 0s ||
    
83.          beresp.http.Set-Cookie ||
    
84.          beresp.http.Vary == "*") {
    
85.                 /*
    
86.                  * Mark as "Hit-For-Pass" for the next 2 minutes
    
87.                  */
    
88.                 set beresp.ttl = 120 s;
    
89.                 return (hit_for_pass);
    
90.      }
    
91.      return (deliver);
    
92. }
    
93. #
    
94. sub vcl_deliver {
    
95.      return (deliver);
    
96. }
    
97. #
    
98. # sub vcl_error {
    
99. #     set obj.http.Content-Type = "text/html; charset=utf-8";
    
100. #     set obj.http.Retry-After = "5";
     
101. #     synthetic {"
     
102. # <?xml version="1.0" encoding="utf-8"?>
     
103. # <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
     
104. #  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
     
105. # <html>
     
106. #   <head>
     
107. #     <title>"} + obj.status + " " + obj.response + {"</title>
     
108. #   </head>
     
109. #   <body>
     
110. #     <h1>Error "} + obj.status + " " + obj.response + {"</h1>
     
111. #     <p>"} + obj.response + {"</p>
     
112. #     <h3>Guru Meditation:</h3>
     
113. #     <p>XID: "} + req.xid + {"</p>
     
114. #     <hr>
     
115. #     <p>Varnish cache server</p>
     
116. #   </body>
     
117. # </html>
     
118. # "};
     
119. #     return (deliver);
     
120. # }
     
121. #
     
122. sub vcl_init {
     
123.         return (ok);
     
124. }
     
125. #
     
126. sub vcl_fini {
     
127.         return (ok);
     
128. }

复制代码

/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

安装配置Varnish3.0手记-it论坛-系统架构论坛-运维论坛
摘自：http://www.cnblogs.com/littlehb/archive/2012/02/11/2346319.html