varnish的服务配置（实验说明）

实验环境

varnish ——172.25.54.5 server1（虚拟机test1）
apache ——172.25.54.6 server2（虚拟机test2）
apache ——172.25.54.7 server3（虚拟机test3）

每个实验都在前一个实验的基础上

实验一、简单实现varnish

配置varnish服务器（server1）

安装varnish yum install varnish-3.0.5-1.el6.x86_64.rpm varnish-libs-3.0.5-1.el6.x86_64.rpm -y
varnish 安装包
配置varnish服务器server1

[root@server1 ~]# yum install varnish-3.0.5-1.el6.x86_64.rpm varnish-libs-3.0.5-1.el6.x86_64.rpm -y
[root@server1 ~]# cd /etc/varnish/
[root@server1 varnish]# ls
default.vcl  secret
[root@server1 varnish]# ll default.vcl
-rw-r--r-- 1 root root 3119 Dec  2  2013 default.vcl
[root@server1 varnish]# ll secret
-rw------- 1 root root 37 Jul 28 14:00 secret
[root@server1 varnish]# vim default.vcl  ##配置一个后端服务器7 backend default {8   .host = "172.25.54.6";9   .port = "80";10 }
[root@server1 varnish]# vim /etc/sysconfig/varnish
##配置varnish服务端口66 VARNISH_LISTEN_PORT=80
[root@server1 varnish]# sysctl -a | grep file
fs.file-nr = 512    0   98862
fs.file-max = 98862
[root@server1 varnish]# cd /lib64/security/
[root@server1 security]# ll pam_limits.so
-rwxr-xr-x. 1 root root 18592 Oct  7  2013 pam_limits.so
[root@server1 security]# vim /etc/security/limits.conf 52 varnish         -       nofile          9800053 varnish         -       memlock         8200054 varnish         -       nproc           unlimited
[root@server1 security]# /etc/init.d/varnish start
Starting Varnish Cache:                                    [  OK  ]
[root@server1 security]# cd /etc/varnish/
[root@server1 varnish]# /etc/init.d/varnish reload
Loading vcl from /etc/varnish/default.vcl
Current running config name is reload_2018-07-28T14:32:35
Using new config name reload_2018-07-28T14:33:25
VCL compiled.available       0 boot
available       0 reload_2018-07-28T14:32:35
active          0 reload_2018-07-28T14:33:25Done
[root@server1 varnish]#

apache服务器server2

[root@server2 html]# yum install httpd -y
[root@server2 ~]# /etc/init.d/httpd start
Starting httpd: httpd: Could not reliably determine the server's fully qualified domain name, using 172.25.54.2 for ServerName[  OK  ]
[root@server2 ~]# cd /var/www/html/
[root@server2 html]# vim index.html
[root@server2 html]# cat index.html
www.westos.org - server2
[root@server2 html]#

真机测试

[root@foundation54 ~]# vim /etc/hosts
[root@foundation54 ~]# cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
172.25.54.5 www.westos.org bbs.westos.org westos.org
[root@foundation54 ~]# curl www.westos.org
<h1>www.westos.org - server2</h1>
[root@foundation54 ~]#

实验二、查看缓存情况

配置server1

[root@server1 varnish]# vim default.vcl12 sub vcl_deliver {13 if (obj.hits > 0) {14 set resp.http.X-Cache = "HIT from westos cache";   ##命中缓存15 }16 else {17 set resp.http.X-Cache = "MISS from westos cache";  ##未命中缓存18 }19 return (deliver);20 }
[root@server1 varnish]# /etc/init.d/varnish stop
Stopping Varnish Cache:                                    [  OK  ]
[root@server1 varnish]# /etc/init.d/varnish start
Starting Varnish Cache:                                    [  OK  ]
[root@server1 varnish]# /etc/init.d/varnish reload
Loading vcl from /etc/varnish/default.vcl
Current running config name is boot
Using new config name reload_2018-07-28T14:58:29
VCL compiled.available       0 boot
active          0 reload_2018-07-28T14:58:29Done
[root@server1 varnish]#

真机测试缓存命中

清除缓存
[root@server1 varnish]# varnishadm ban.url /index.html
再测试

没有改变,是因为存在浏览器缓存的问题,用 curl 测试

清除缓存
[root@server1 varnish]# varnishadm ban.url /index.html

实验三、定义多个不同域名站点的后端服务器

配置server1

[root@server1 varnish]# vim default.vcl ##定义多个不同域名站点的后端服务器7 backend web1 {8   .host = "172.25.54.6";9   .port = "80";10 }11 12 backend web2 {13   .host = "172.25.54.7";14   .port = "80";15 }##当访问 www.westos.org 域名时从 web1 上取数据,##访问 bbs.westos.org 域名时到 web2 取数据,##访问其他页面报错17 sub vcl_recv {18 if (req.http.host ~ "^(www.)?westos.org") {19 set req.http.host = "www.westos.org";20 set req.backend = web1;21 } elsif (req.http.host ~ "^bbs.westos.org") {22 set req.backend = web2;23 } else {error 404 "westos cache";24 }25 }26 27 sub vcl_deliver {28 if (obj.hits > 0) {29 set resp.http.X-Cache = "HIT from westos cache";30 }31 else {32 set resp.http.X-Cache = "MISS from westos cache";33 }34 return (deliver);35 }
[root@server1 varnish]# /etc/init.d/varnish reload
Loading vcl from /etc/varnish/default.vcl
Current running config name is reload_2018-07-28T14:58:29
Using new config name reload_2018-07-28T15:19:24
VCL compiled.available       0 boot
available       2 reload_2018-07-28T14:58:29
active          0 reload_2018-07-28T15:19:24Done
[root@server1 varnish]#

配置server3

[root@server3 ~]# yum install httpd -y
[root@server3 ~]# /etc/init.d/httpd start
Starting httpd: httpd: Could not reliably determine the server's fully qualified domain name, using 172.25.54.3 for ServerName[  OK  ]
[root@server3 ~]# cd /var/www/html/
[root@server3 html]# ls
[root@server3 html]# vim index.html
[root@server3 html]# cat index.html
bbs.westos.org
[root@server3 html]#

真机测试

实验四、把多个后端聚合为一个组

配置server3

[root@server3 html]# vim /etc/httpd/conf/httpd.conf 990 NameVirtualHost *:80
1010 <VirtualHost *:80>
1011     DocumentRoot /var/www/html
1012     ServerName bbs.westos.org
1013 </VirtualHost>
1014
1015 <VirtualHost *:80>
1016     DocumentRoot /www1
1017     ServerName www.westos.org
1018 </VirtualHost>
[root@server3 html]# mkdir /www1
[root@server3 html]# cd /www1/
[root@server3 www1]# ls
[root@server3 www1]# vim index.html
[root@server3 www1]# cat index.html
www.westos.org - server3
[root@server3 www1]# /etc/init.d/httpd restart
[root@server3 www1]# vim /etc/hosts
[root@server3 www1]# cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
172.25.54.7 server7 www.westos.org bbs.westos.org
[root@server3 www1]# curl www.westos.org
www.westos.org - server3
[root@server3 www1]# curl bbs.westos.org
bbs.westos.org
[root@server3 www1]#

配置server1

[root@server1 varnish]# vim default.vcl 17 director tutu round-robin {18 {.backend = web1;}19 {.backend = web2;}20 }21 22 sub vcl_recv {23 if (req.http.host ~ "^(www.)?westos.org") {24 set req.http.host = "www.westos.org";25 set req.backend = tutu;26 return (pass);   #为了测试方便,不进行缓存27 } elsif (req.http.host ~ "^bbs.westos.org") {28 set req.backend = web2;29 } else {error 404 "westos cache";30 }31 }
[root@server1 varnish]# /etc/init.d/varnish reload
Loading vcl from /etc/varnish/default.vcl
Current running config name is reload_2018-07-28T15:19:24
Using new config name reload_2018-07-28T15:50:54
VCL compiled.available       0 boot
available       0 reload_2018-07-28T14:58:29
available       2 reload_2018-07-28T15:19:24
active          0 reload_2018-07-28T15:50:54Done
[root@server1 varnish]#

真机测试

[root@foundation54 ~]# curl www.westos.org
www.westos.org - server2
[root@foundation54 ~]# curl www.westos.org
www.westos.org - server3
[root@foundation54 ~]# curl www.westos.org
www.westos.org - server2
[root@foundation54 ~]# curl www.westos.org
www.westos.org - server3
[root@foundation54 ~]# curl www.westos.org
www.westos.org - server2
[root@foundation54 ~]# curl www.westos.org
www.westos.org - server3
[root@foundation54 ~]#

实验五、varnish cdn 推送平台

配置server1

[root@server1 ~]# yum install lftp php unzip -y
[root@server1 ~]# ls
bansys.zip
[root@server1 ~]# unzip bansys.zip -d /var/www/html/
[root@server1 ~]# cd /var/www/html/
[root@server1 html]# ls
bansys
[root@server1 html]# cd bansys/
[root@server1 bansys]# ls
class_socket.php  config.php  index.php  purge_action.php  static
[root@server1 bansys]# mv * ..
[root@server1 bansys]# ls
[root@server1 bansys]# cd ..
[root@server1 html]# ls
bansys  class_socket.php  config.php  index.php  purge_action.php  static
[root@server1 html]# vim config.php

[root@server1 html]# yum install httpd -y
[root@server1 html]# vim /etc/httpd/conf/httpd.conf 136 Listen 8080   ##为了避免与varnish冲突
[root@server1 html]# /etc/init.d/httpd start
[root@server1 html]# netstat -antpl
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address               Foreign Address             State       PID/Program name
tcp        0      0 :::8080                     :::*                        LISTEN      1422/httpd

[root@server1 html]# cd /etc/varnish/
[root@server1 varnish]# ls
default.vcl  secret
[root@server1 varnish]# vim default.vcl
##添加7 acl westos {8 "127.0.0.1";9 "172.25.54.0"/24;10 }sub vcl_recv {28 ##在函数内添加29 if (req.request == "BAN") {30 if (!client.ip ~ westos) {31 error 405 "Not allowed.";32 }33 ban("req.url ~ " + req.url);34 error 200 "ban added";35 }36 #####37 if (req.http.host ~ "^(www.)?westos.org") {38 set req.http.host = "www.westos.org";39 set req.backend = tutu;41 } elsif (req.http.host ~ "^bbs.westos.org") {42 set req.backend = web2;43 } else {error 404 "westos cache";44 }45 }
[root@server1 varnish]# /etc/init.d/varnish reload
Loading vcl from /etc/varnish/default.vcl
Current running config name is boot
Using new config name reload_2018-07-29T09:43:47
VCL compiled.available       2 boot
active          0 reload_2018-07-29T09:43:47Done
[root@server1 varnish]#

浏览器页面未改变是因为浏览器缓存导致的

浏览器推送+shell的curl测试

[root@foundation54 ~]# curl www.westos.org/index.html
<h1>www.westos.org - server3</h1>
[root@foundation54 ~]# curl www.westos.org/index.html
<h1>www.westos.org - server3</h1>
[root@foundation54 ~]# curl www.westos.org/index.html
<h1>www.westos.org - server3</h1>
[root@foundation54 ~]#

[root@foundation54 ~]# curl www.westos.org/index.html
<h1>www.westos.org - server2</h1>
[root@foundation54 ~]# curl www.westos.org/index.html
<h1>www.westos.org - server2</h1>
[root@foundation54 ~]# curl www.westos.org/index.html
<h1>www.westos.org - server2</h1>
[root@foundation54 ~]#

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varnish的服务配置（实验说明）

实验环境

实验一、简单实现varnish

实验二、查看缓存情况

实验三、定义多个不同域名站点的后端服务器

实验四、把多个后端聚合为一个组

实验五、varnish cdn 推送平台

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