haproxy基于一般的调度器设置（有listen，但无frontend和backend）
项目1：haproxy机器部署web集群（httpd是虚拟主机情况，只检查IP端口，不检查域名和站点网页）
haproxy机器：（双网卡：eth0:192.168.4.5 eth1:172.10.10.5）(不用配hosts解析，客户端能自动按照域名识别)
[root@localhost 桌面]# ifconfig eth0 |head -2
eth0 Link encap:Ethernet HWaddr 00:0C:29:90:BC:2C
inet addr:192.168.4.5 Bcast:192.168.4.255 Mask:255.255.255.0
[root@localhost 桌面]# ifconfig eth1 |head -2
eth1 Link encap:Ethernet HWaddr 00:0C:29:90:BC:36
inet addr:172.10.10.5 Bcast:172.10.10.255 Mask:255.255.255.0
[root@localhost 桌面]# vim /etc/sysctl.conf //也可不开路由转发，养成习惯最好
net.ipv4.ip_forward = 1
wq
[root@localhost 桌面]# sysctl -p
[root@localhost 桌面]# yum -y install gcc gcc-c++
[root@localhost 桌面]# ls
haproxy-1.4.24.tar.gz
[root@localhost 桌面]# tar -zxf haproxy-1.4.24.tar.gz
[root@localhost 桌面]# ls
haproxy-1.4.24 haproxy-1.4.24.tar.gz
[root@localhost 桌面]# cd haproxy-1.4.24
[root@localhost haproxy-1.4.24]# ls
CHANGELOG ebtree LICENSE Makefile.osx src TODO
contrib examples Makefile README SUBVERS VERDATE
doc include Makefile.bsd ROADMAP tests VERSION
[root@localhost haproxy-1.4.24]# make TARGET=linux2628 ARCH=x86_64 //编译，target指定内核，架构选择
[root@localhost haproxy-1.4.24]# make PREFIX=/usr/local/haproxy install
[root@localhost haproxy-1.4.24]# cd /usr/local/haproxy/
[root@localhost haproxy]# ls
doc sbin share
[root@localhost haproxy]# mkdir conf logs var/run var/chroot -p //优化目录结构，也可不做，根据需要
[root@localhost haproxy]# ls
conf doc logs sbin share var
安装后链接变量路径和cp配置文件和启动脚本：
[root@localhost haproxy]# ln -s /usr/local/haproxy/sbin/haproxy /usr/sbin/
[root@localhost haproxy]# mkdir /etc/haproxy
[root@localhost haproxy]# cp /root/桌面
/haproxy-1.4.24/examples/haproxy.cfg /etc/haproxy/
[root@localhost haproxy]# cp /root/桌面
/haproxy-1.4.24/examples/haproxy.init /etc/init.d/haproxy
[root@localhost haproxy]# chmod +x /etc/init.d/haproxy
[root@localhost haproxy]# /etc/init.d/haproxy start //第一次启动会报错，配置文件模板需改
[root@localhost haproxy]# vim /etc/haproxy/haproxy.cfg //只检查IP端口，不检查域名和站点网页
global
log 127.0.0.1:514 local0 warning
log 127.0.0.1 local1 notice
chroot /usr/local/haproxy/var/chroot
pidfile /usr/local/haproxy/var/run/haproxy.pid
maxconn 20480
nbproc 8
daemon
group haproxy
user haproxy
spread-checks 3
defaults
log global
mode http
option httplog
option dontlognull
retries 3
redispatch
maxconn 2000
contimeout 5000
clitimeout 50000
srvtimeout 50000
listen test
bind 172.10.10.5:80
mode http
stats enable
stats uri /admin?stats //web界面的uri，访问时格式：http://调度IP或域名/admin?stats
stats hide-version
stats auth admin:123456
balance roundrobin
option forwardfor //在web网站配置日志中能够看到客户端真实的IP,不好演示，做一个说明即可。
timeout server 15s
timeout connect 15s
option httpclose
cookie SERVERID rewrite
server web1 192.168.4.100:80 cookie A maxconn 2048 weight 1 check port 80 inter 2000 rise 2 fall 5
server web2 192.168.4.200:80 cookie B maxconn 4096 weight 1 check port 80 inter 2000 rise 2 fall 5
wq
[root@localhost haproxy]# useradd -s /sbin/nologin haproxy -M
利用rsyslog配置haproxy记录日志功能： //当看
/usr/local/haproxy/logs/haproxy.log可看haproxy日志，只做下说明
[root@localhost haproxy]# echo “local0.* /usr/local/haproxy/logs/haproxy.log” >> /etc/rsyslog.conf
[root@localhost haproxy]# tail -1 /etc/rsyslog.conf
local0.*
/usr/local/haproxy/logs/haproxy.log //因为haproxy.cfg中是local0，用这个设备写日志
[root@localhost haproxy]# tail -1 /etc/sysconfig/rsyslog //这个不用动
SYSLOGD_OPTIOn=”-c 5″ //6.0版以上不用动，5.8版应写为：SYSLOGD_OPTIOn=”-c 2 -m 0 -r -x”,兼容2版本
[root@localhost haproxy]# /etc/init.d/rsyslog restart //启动记录haproxy日志服务，6.4版启动无端口
[root@localhost haproxy]# vim /etc/rsyslog.conf //解决rsyslog启动服务后无端口问题
$ModLoad imudp //注释取消
$UDPServerRun 514 //注释取消
wq
[root@localhost haproxy]# /etc/init.d/rsyslog restart
[root@localhost haproxy]# netstat -anptu |grep 514
udp 0 0 0.0.0.0:514 0.0.0.0:* 27715/rsyslogd
udp 0 0 :::514 :::* 27715/rsyslogd
[root@localhost haproxy]# /etc/init.d/haproxy start //启动haproxy服务
[root@localhost haproxy]# ps -elf |grep haproxy //查看进程
[root@localhost haproxy]# /etc/init.d/haproxy stop //停止haproxy
//也可以用源码启动，如下：
/usr/local/haproxy/sbin/haproxy -f /etc/haproxy/haproxy.cfg -c //检查语法
/usr/local/haproxy/sbin/haproxy -f /etc/haproxy/haproxy.cfg -D //启动 pkill haproxy //停止
-f指定配置文件，-D后台启动，-q安静的执行，-c检查语法，-n并发连接数，-m使用内存多少M限制,-p指定把pid号写到哪个文件去，-sf平滑重启参数。
两台web服务器上配置：（192.168.4.100上）
[root@localhost 桌面]# yum -y install httpd
[root@localhost 桌面]# /etc/init.d/httpd start
[root@localhost 桌面]# vim
/etc/httpd/conf/httpd.conf
#LogFormat “%h %l %u %t \”%r\” %>s %b” common //默认如此，修改为下面，把%h修改为:\”%{X-Forwarded-For}i\”
LogFormat “\”%{X-Forwarded-For}i\” %l %u %t \”%r\” %>s %b” common //记录客户端访问的真实IP的设置
NameVirtualHost *:80
<VirtualHost *:80>
ServerAdmin [email protected]
DocumentRoot /changyou
ServerName www.changyou.com
ErrorLog logs/changyou-error_log
CustomLog logs/changyou-access_log common //记录客户端真实IP
</VirtualHost>
<VirtualHost *:80>
ServerAdmin [email protected]
DocumentRoot /tarena
ServerName www.tarena.com
ErrorLog logs/tarena-error_log
CustomLog logs/tarena-access_log common //记录客户机真实IP
</VirtualHost>
wq
[root@localhost 桌面]# /etc/init.d/httpd restart
[root@localhost 桌面]# mkdir /changyou
[root@localhost 桌面]# mkdir /tarena
[root@localhost 桌面]# echo changyou1 > /changyou/index.html
[root@localhost 桌面]# echo tarena1 > /tarena/index.html
两台web服务器上配置：（192.168.4.200上）
[root@localhost 桌面]# yum -y install httpd
[root@localhost 桌面]# /etc/init.d/httpd start
[root@localhost 桌面]# vim
/etc/httpd/conf/httpd.conf
#LogFormat “%h %l %u %t \”%r\” %>s %b” common //默认如此，修改为下面，把%h修改为:\”%{X-Forwarded-For}i\”
LogFormat “\”%{X-Forwarded-For}i\” %l %u %t \”%r\” %>s %b” common //记录客户端访问的真实IP
NameVirtualHost *:80
<VirtualHost *:80>
ServerAdmin [email protected]
DocumentRoot /changyou
ServerName www.changyou.com
ErrorLog logs/changyou-error_log
CustomLog logs/changyou-access_log common
</VirtualHost>
<VirtualHost *:80>
ServerAdmin [email protected]
DocumentRoot /tarena
ServerName www.tarena.com
ErrorLog logs/tarena-error_log
CustomLog logs/tarena-access_log common
</VirtualHost>
wq
[root@localhost 桌面]# /etc/init.d/httpd restart
[root@localhost 桌面]# mkdir /changyou
[root@localhost 桌面]# mkdir /tarena
[root@localhost 桌面]# echo changyou2 > /changyou/index.html
[root@localhost 桌面]# echo tarena2 > /tarena/index.html
客户端机器（172.10.10.6）
[root@localhost 桌面]# vim /etc/hosts
172.10.10.5 www.changyou.com www.tarena.com
[root@localhost 桌面]# curl www.changyou.com
changyou1
[root@localhost 桌面]# curl www.changyou.com
changyou2
[root@localhost 桌面]# curl www.changyou.com
changyou1
[root@localhost 桌面]# curl www.changyou.com
changyou1
[root@localhost 桌面]# curl www.changyou.com
changyou1
[root@localhost 桌面]# curl www.changyou.com
changyou2
[root@localhost 桌面]# curl www.changyou.com
changyou2
[root@localhost 桌面]# curl www.tarena.com
tarena1
[root@localhost 桌面]# curl www.tarena.com
tarena2
[root@localhost 桌面]# curl www.tarena.com
tarena2
[root@localhost 桌面]# curl www.tarena.com
tarena1
[root@localhost 桌面]# curl www.tarena.com
tarena1
[root@localhost 桌面]# curl www.tarena.com
tarena2
做个说明：当后端的服务器的其中一个宕机后，会被haproxy自动剔除集群，不演示了，但看到效果了。
客户端访问调度器的web页面，查看后端web服务器是否正常：
输入:http://调度器IP或域名/admin?Stats如下图：
输入配置文件中设置的用户名和密码：admin，123456，如下图：（当后台两服务器都正常时）
当web1宕机后，如下图：
当web1恢复启动后，web界面又恢复正常，如下图：
项目2：haproxy机器部署web集群（httpd是虚拟主机情况，健康检查站点网页，当检查到站点有网页才认为正常）
haproxy机器：（双网卡：eth0:192.168.4.5 eth1:172.10.10.5）(不用配hosts解析，客户端能自动按照域名识别) [root@localhost 桌面]# ifconfig eth0 |head -2
eth0 Link encap:Ethernet HWaddr 00:0C:29:90:BC:2C
inet addr:192.168.4.5 Bcast:192.168.4.255 Mask:255.255.255.0
[root@localhost 桌面]# ifconfig eth1 |head -2
eth1 Link encap:Ethernet HWaddr 00:0C:29:90:BC:36
inet addr:172.10.10.5 Bcast:172.10.10.255 Mask:255.255.255.0
[root@localhost 桌面]# vim /etc/sysctl.conf //也可不开路由转发，养成习惯最好
net.ipv4.ip_forward = 1
wq
[root@localhost 桌面]# sysctl -p
[root@localhost 桌面]# yum -y install gcc gcc-c++
[root@localhost 桌面]# ls
haproxy-1.4.24.tar.gz
[root@localhost 桌面]# tar -zxf haproxy-1.4.24.tar.gz
[root@localhost 桌面]# ls
haproxy-1.4.24 haproxy-1.4.24.tar.gz
[root@localhost 桌面]# cd haproxy-1.4.24
[root@localhost haproxy-1.4.24]# ls
CHANGELOG ebtree LICENSE Makefile.osx src TODO
contrib examples Makefile README SUBVERS VERDATE
doc include Makefile.bsd ROADMAP tests VERSION
[root@localhost haproxy-1.4.24]# make TARGET=linux2628 ARCH=x86_64 //编译，target指定内核，架构选择
[root@localhost haproxy-1.4.24]# make PREFIX=/usr/local/haproxy install
[root@localhost haproxy-1.4.24]# cd /usr/local/haproxy/
[root@localhost haproxy]# ls
doc sbin share
[root@localhost haproxy]# mkdir conf logs var/run var/chroot -p //优化目录结构，也可不做，根据需要
[root@localhost haproxy]# ls
conf doc logs sbin share var
安装后链接变量路径和cp配置文件和启动脚本：
[root@localhost haproxy]# ln -s /usr/local/haproxy/sbin/haproxy /usr/sbin/
[root@localhost haproxy]# mkdir /etc/haproxy
[root@localhost haproxy]# cp /root/桌面
/haproxy-1.4.24/examples/haproxy.cfg /etc/haproxy/
[root@localhost haproxy]# cp /root/桌面
/haproxy-1.4.24/examples/haproxy.init /etc/init.d/haproxy
[root@localhost haproxy]# chmod +x /etc/init.d/haproxy
[root@localhost haproxy]# /etc/init.d/haproxy start //第一次启动会报错，配置文件模板需改
[root@localhost haproxy]# vim /etc/haproxy/haproxy.cfg //健康检查站点网页
global
log 127.0.0.1:514 local0 warning
log 127.0.0.1 local1 notice
chroot /usr/local/haproxy/var/chroot
pidfile /usr/local/haproxy/var/run/haproxy.pid
maxconn 20480
nbproc 8
daemon
group haproxy
user haproxy
spread-checks 3
defaults
log global
mode http
option httplog
option dontlognull
retries 3
redispatch
maxconn 2000
contimeout 5000
clitimeout 50000
srvtimeout 50000
listen test
bind 172.10.10.5:80
mode http
stats enable
stats uri /admin?stats //web界面的uri，访问时格式：http://调度IP或域名/admin?stats
stats hide-version
stats auth admin:123456
balance roundrobin
option forwardfor //在web网站配置日志中能够看到客户端真实的IP,不好演示，做一个说明即可。
option httpchk HEAD /check.html HTTP/1.0 //当站点目录有check.html才认为网站正常，HEAD也可换成GET
timeout server 15s
timeout connect 15s
option httpclose
cookie SERVERID rewrite
server web1 192.168.4.100:80 cookie A maxconn 2048 weight 1 check port 80 inter 2000 rise 2 fall 5
server web2 192.168.4.200:80 cookie B maxconn 4096 weight 1 check port 80 inter 2000 rise 2 fall 5
wq
[root@localhost haproxy]# useradd -s /sbin/nologin haproxy -M
利用rsyslog配置haproxy记录日志功能： //当看
/usr/local/haproxy/logs/haproxy.log可看haproxy日志，只做下说明
[root@localhost haproxy]# echo “local0.* /usr/local/haproxy/logs/haproxy.log” >> /etc/rsyslog.conf
[root@localhost haproxy]# tail -1 /etc/rsyslog.conf
local0.*
/usr/local/haproxy/logs/haproxy.log //因为haproxy.cfg中是local0，用这个设备写日志
[root@localhost haproxy]# tail -1 /etc/sysconfig/rsyslog //这个不用动
SYSLOGD_OPTIOn=”-c 5″ //6.0版以上不用动，5.8版应写为：SYSLOGD_OPTIOn=”-c 2 -m 0 -r -x”,兼容2版本
[root@localhost haproxy]# /etc/init.d/rsyslog restart //启动记录haproxy日志服务，6.4版启动无端口
[root@localhost haproxy]# vim /etc/rsyslog.conf //解决rsyslog启动服务后无端口问题
$ModLoad imudp //注释取消
$UDPServerRun 514 //注释取消
wq
[root@localhost haproxy]# /etc/init.d/rsyslog restart
[root@localhost haproxy]# netstat -anptu |grep 514
udp 0 0 0.0.0.0:514 0.0.0.0:* 27715/rsyslogd
udp 0 0 :::514 :::* 27715/rsyslogd
[root@localhost haproxy]# /etc/init.d/haproxy start //启动haproxy服务
[root@localhost haproxy]# ps -elf |grep haproxy //查看进程
[root@localhost haproxy]# /etc/init.d/haproxy stop //停止haproxy
//也可以用源码启动，如下：
/usr/local/haproxy/sbin/haproxy -f /etc/haproxy/haproxy.cfg -c //检查语法
/usr/local/haproxy/sbin/haproxy -f /etc/haproxy/haproxy.cfg -D //启动 pkill haproxy //停止
-f指定配置文件，-D后台启动，-q安静的执行，-c检查语法，-n并发连接数，-m使用内存多少M限制,-p指定把pid号写到哪个文件去，-sf平滑重启参数。
两台web服务器上配置：（192.168.4.100上） //此时站点目录没有check.html，但两web服务都启动正常
[root@localhost 桌面]# yum -y install httpd
[root@localhost 桌面]# /etc/init.d/httpd start
[root@localhost 桌面]# vim
/etc/httpd/conf/httpd.conf
#LogFormat “%h %l %u %t \”%r\” %>s %b” common //默认如此，修改为下面，把%h修改为:\”%{X-Forwarded-For}i\”
LogFormat “\”%{X-Forwarded-For}i\” %l %u %t \”%r\” %>s %b” common //记录客户端访问的真实IP的设置
NameVirtualHost *:80
<VirtualHost *:80>
ServerAdmin [email protected]
DocumentRoot /changyou
ServerName www.changyou.com
ErrorLog logs/changyou-error_log
CustomLog logs/changyou-access_log common //记录客户端真实IP
</VirtualHost>
<VirtualHost *:80>
ServerAdmin [email protected]
DocumentRoot /tarena
ServerName www.tarena.com
ErrorLog logs/tarena-error_log
CustomLog logs/tarena-access_log common //记录客户端真实IP
</VirtualHost>
wq
[root@localhost 桌面]# /etc/init.d/httpd restart
[root@localhost 桌面]# mkdir /changyou
[root@localhost 桌面]# mkdir /tarena
[root@localhost 桌面]# echo changyou1 > /changyou/index.html
[root@localhost 桌面]# echo tarena1 > /tarena/index.html
两台web服务器上配置：（192.168.4.200上） //此时站点目录没有check.html，但两web服务都启动正常
[root@localhost 桌面]# yum -y install httpd
[root@localhost 桌面]# /etc/init.d/httpd start
[root@localhost 桌面]# vim
/etc/httpd/conf/httpd.conf
#LogFormat “%h %l %u %t \”%r\” %>s %b” common //默认如此，修改为下面，把%h修改为:\”%{X-Forwarded-For}i\”
LogFormat “\”%{X-Forwarded-For}i\” %l %u %t \”%r\” %>s %b” common //记录客户端访问的真实IP
NameVirtualHost *:80
<VirtualHost *:80>
ServerAdmin [email protected]
DocumentRoot /changyou
ServerName www.changyou.com
ErrorLog logs/changyou-error_log
CustomLog logs/changyou-access_log common
</VirtualHost>
<VirtualHost *:80>
ServerAdmin [email protected]
DocumentRoot /tarena
ServerName www.tarena.com
ErrorLog logs/tarena-error_log //记录客户端真实IP
CustomLog logs/tarena-access_log common
</VirtualHost>
wq
[root@localhost 桌面]# /etc/init.d/httpd restart
[root@localhost 桌面]# mkdir /changyou
[root@localhost 桌面]# mkdir /tarena
[root@localhost 桌面]# echo changyou2 > /changyou/index.html
[root@localhost 桌面]# echo tarena2 > /tarena/index.html
客户端机器（172.10.10.6）访问测试： //因为检查不到站点目录的check.html，所以认为不正常，访问不到
[root@localhost 桌面]# vim /etc/hosts
172.10.10.5 www.changyou.com www.tarena.com
[root@localhost 桌面]# curl www.changyou.com
<html><body><h1>503 Service Unavailable</h1>
No server is available to handle this request.
</body></html>
[root@localhost 桌面]# curl www.changyou.com
<html><body><h1>503 Service Unavailable</h1>
No server is available to handle this request.
</body></html>
[root@localhost 桌面]# curl www.tarena.com
<html><body><h1>503 Service Unavailable</h1>
No server is available to handle this request.
</body></html>
[root@localhost 桌面]# curl www.changyou.com
<html><body><h1>503 Service Unavailable</h1>
No server is available to handle this request.
</body></html>
两台web服务器上配置：（192.168.4.100上） //此时站点目录有check.html
[root@localhost 桌面]# touch /changyou/check.html
[root@localhost 桌面]# touch /tarena/check.html
两台web服务器上配置：（192.168.4.200上） //此时站点目录有check.html
[root@localhost 桌面]# touch /changyou/check.html
[root@localhost 桌面]# touch /tarena/check.html
客户端机器（172.10.10.6）访问测试： //因为能检查到站点目录的check.html，所以认为正常，可以访问
[root@localhost 桌面]# curl www.changyou.com
changyou1
[root@localhost 桌面]# curl www.changyou.com
changyou1
[root@localhost 桌面]# curl www.changyou.com
changyou1
[root@localhost 桌面]# curl www.changyou.com
changyou2
[root@localhost 桌面]# curl www.changyou.com
changyou2
[root@localhost 桌面]# curl www.changyou.com
changyou1
[root@localhost 桌面]# curl www.changyou.com
changyou1
[root@localhost 桌面]# curl www.changyou.com
changyou2
[root@localhost 桌面]# curl www.changyou.com
changyou2
[root@localhost 桌面]# curl www.changyou.com
changyou2
[root@localhost 桌面]# curl www.tarena.com
tarena1
[root@localhost 桌面]# curl www.tarena.com
tarena1
[root@localhost 桌面]# curl www.tarena.com
tarena2
[root@localhost 桌面]# curl www.tarena.com
tarena1
[root@localhost 桌面]# curl www.tarena.com
tarena2
[root@localhost 桌面]# curl www.tarena.com
tarena2
做个说明：当后端的服务器的其中一个宕机后，会被haproxy自动剔除集群，不演示了，但看到效果了。
客户端访问调度器的web页面，查看后端web服务器是否正常：
输入:http://调度器IP或域名/admin?Stats如下图：
输入配置文件中设置的用户名和密码：admin，123456，如下图：（当后台两服务器都正常时）
当web1宕机后或者web1正常，但是站点目录无check.html，如下图：
当web1恢复启动且站点目录有check.html后，web界面又恢复正常，如下图：
基于acl控制的调度器设置（无listen，但有frontend和backend）
项目1：基于定义域名acl规则，然后根据不同域名抛给后面对应服务器池中或跳转。
要求：访问www.chagnyou.com时,抛给后面的chagnyou池，访问baidu.com时，跳转到真实的百度（无法测试），默认的IP或域名访问时，默认抛给后面的tarena池。
haproxy机器：（双网卡：eth0:192.168.4.5 eth1:172.10.10.5）(不用配hosts解析，客户端也能识别)
[root@localhost 桌面]# ifconfig eth0 |head -2
eth0 Link encap:Ethernet HWaddr 00:0C:29:90:BC:2C
inet addr:192.168.4.5 Bcast:192.168.4.255 Mask:255.255.255.0
[root@localhost 桌面]# ifconfig eth1 |head -2
eth1 Link encap:Ethernet HWaddr 00:0C:29:90:BC:36
inet addr:172.10.10.5 Bcast:172.10.10.255 Mask:255.255.255.0
[root@localhost 桌面]# vim /etc/sysctl.conf //也可不开路由转发，养成习惯最好
net.ipv4.ip_forward = 1
wq
[root@localhost 桌面]# sysctl -p
[root@localhost 桌面]# yum -y install gcc gcc-c++
[root@localhost 桌面]# ls
haproxy-1.4.24.tar.gz
[root@localhost 桌面]# tar -zxf haproxy-1.4.24.tar.gz
[root@localhost 桌面]# ls
haproxy-1.4.24 haproxy-1.4.24.tar.gz
[root@localhost 桌面]# cd haproxy-1.4.24
[root@localhost haproxy-1.4.24]# ls
CHANGELOG ebtree LICENSE Makefile.osx src TODO
contrib examples Makefile README SUBVERS VERDATE
doc include Makefile.bsd ROADMAP tests VERSION
[root@localhost haproxy-1.4.24]# make TARGET=linux2628 ARCH=x86_64 //编译，target指定内核，架构选择
[root@localhost haproxy-1.4.24]# make PREFIX=/usr/local/haproxy install
[root@localhost haproxy-1.4.24]# cd /usr/local/haproxy/
[root@localhost haproxy]# ls
doc sbin share
[root@localhost haproxy]# mkdir conf logs var/run var/chroot -p //优化目录结构，也可不做，根据需要
[root@localhost haproxy]# ls
conf doc logs sbin share var
安装后链接变量路径和cp配置文件和启动脚本：
[root@localhost haproxy]# ln -s /usr/local/haproxy/sbin/haproxy /usr/sbin/
[root@localhost haproxy]# mkdir /etc/haproxy
[root@localhost haproxy]# cp /root/桌面
/haproxy-1.4.24/examples/haproxy.cfg /etc/haproxy/
[root@localhost haproxy]# cp /root/桌面
/haproxy-1.4.24/examples/haproxy.init /etc/init.d/haproxy
[root@localhost haproxy]# chmod +x /etc/init.d/haproxy
[root@localhost haproxy]# /etc/init.d/haproxy start //第一次启动会报错，配置文件模板需改
[root@localhost haproxy]# vim /etc/haproxy/haproxy.cfg
global
log 127.0.0.1:514 local0 warning
log 127.0.0.1 local1 notice
chroot /usr/local/haproxy/var/chroot
pidfile /usr/local/haproxy/var/run/haproxy.pid
maxconn 20480
nbproc 8
daemon
group haproxy
user haproxy
spread-checks 3
defaults
log global
option httplog
option dontlognull
retries 3
redispatch
maxconn 2000
contimeout 5000
clitimeout 50000
srvtimeout 50000
mode http
stats enable
stats uri /admin?stats
stats hide-version
stats auth admin:123456
balance roundrobin
frontend zdyname
mode http
stats enable
stats uri /admin?stats
stats hide-version
stats auth admin:123456
bind 172.10.10.5:80
acl bd_zdyname hdr(host) -i baidu.com
acl cy_zdyname hdr(host) -i www.changyou.com
redirect prefix http://www.baidu.com code 301 if bd_zdyname
use_backend changyou if cy_zdyname
default_backend tarena
backend changyou
balance roundrobin
option httpclose
option forwardfor
server web1 192.168.4.100:80 cookie A maxconn 2048 weight 1 check port 80 inter 2000 rise 2 fall 5
backend tarena
balance roundrobin
option httpclose
option forwardfor
server web2 192.168.4.200:80 cookie A maxconn 2048 weight 1 check port 80 inter 2000 rise 2 fall 5
wq
[root@localhost haproxy]# useradd -s /sbin/nologin haproxy -M
利用rsyslog配置haproxy记录日志功能： //当看
/usr/local/haproxy/logs/haproxy.log可看haproxy日志，只做下说明
[root@localhost haproxy]# echo “local0.* /usr/local/haproxy/logs/haproxy.log” >> /etc/rsyslog.conf
[root@localhost haproxy]# tail -1 /etc/rsyslog.conf
local0.*
/usr/local/haproxy/logs/haproxy.log //因为haproxy.cfg中是local0，用这个设备写日志
[root@localhost haproxy]# tail -1 /etc/sysconfig/rsyslog //这个不用动
SYSLOGD_OPTIOn=”-c 5″ //6.0版以上不用动，5.8版应写为：SYSLOGD_OPTIOn=”-c 2 -m 0 -r -x”,兼容2版本
[root@localhost haproxy]# /etc/init.d/rsyslog restart //启动记录haproxy日志服务，6.4版启动无端口
[root@localhost haproxy]# vim /etc/rsyslog.conf //解决rsyslog启动服务后无端口问题
$ModLoad imudp //注释取消
$UDPServerRun 514 //注释取消
wq
[root@localhost haproxy]# /etc/init.d/rsyslog restart
[root@localhost haproxy]# netstat -anptu |grep 514
udp 0 0 0.0.0.0:514 0.0.0.0:* 27715/rsyslogd
udp 0 0 :::514 :::* 27715/rsyslogd
[root@localhost haproxy]# /etc/init.d/haproxy start //启动haproxy服务
[root@localhost haproxy]# ps -elf |grep haproxy //查看进程
[root@localhost haproxy]# /etc/init.d/haproxy stop //停止haproxy
//也可以用源码启动，如下：
/usr/local/haproxy/sbin/haproxy -f /etc/haproxy/haproxy.cfg -c //检查语法
/usr/local/haproxy/sbin/haproxy -f /etc/haproxy/haproxy.cfg -D //启动 pkill haproxy //停止
-f指定配置文件，-D后台启动，-q安静的执行，-c检查语法，-n并发连接数，-m使用内存多少M限制,-p指定把pid号写到哪个文件去，-sf平滑重启参数。
两台web服务器上配置：（192.168.4.100上）
[root@localhost 桌面]# yum -y install httpd
[root@localhost 桌面]# /etc/init.d/httpd start
[root@localhost 桌面]# vim
/etc/httpd/conf/httpd.conf
#LogFormat “%h %l %u %t \”%r\” %>s %b” common //默认如此，修改为下面，把%h修改为:\”%{X-Forwarded-For}i\”
LogFormat “\”%{X-Forwarded-For}i\” %l %u %t \”%r\” %>s %b” common //记录客户端访问的真实IP
NameVirtualHost *:80
<VirtualHost *:80>
ServerAdmin [email protected]
DocumentRoot /changyou
ServerName www.changyou.com
ErrorLog logs/changyou-error_log
CustomLog logs/changyou-access_log common
</VirtualHost>
wq
[root@localhost 桌面]# mkdir /changyou
[root@localhost 桌面]# echo changyou > /changyou/index.html
[root@localhost 桌面]# /etc/init.d/httpd restart
两台web服务器上配置：（192.168.4.200上）
[root@localhost 桌面]# yum -y install httpd
[root@localhost 桌面]# /etc/init.d/httpd start
[root@localhost 桌面]# vim
/etc/httpd/conf/httpd.conf
#LogFormat “%h %l %u %t \”%r\” %>s %b” common //默认如此，修改为下面，把%h修改为:\”%{X-Forwarded-For}i\”
LogFormat “\”%{X-Forwarded-For}i\” %l %u %t \”%r\” %>s %b” common //记录客户端访问的真实IP
NameVirtualHost *:80
<VirtualHost *:80>
ServerAdmin [email protected]
DocumentRoot /tarena
ServerName www.tarena.com
ErrorLog logs/tarena-error_log
CustomLog logs/tarena-access_log common
</VirtualHost>
wq
[root@localhost 桌面]# mkdir /tarena
[root@localhost 桌面]# echo tarena > /tarena/index.html
[root@localhost 桌面]# /etc/init.d/httpd restart
客户端访问调度器测试：（172.10.10.6）
[root@localhost 桌面]# vim /etc/hosts
172.10.10.5 www.changyou.com www.tarena.com www.test.com
[root@localhost 桌面]# curl baidu.com //无环境，无法测试。
curl: (6) Couldn’t resolve host ‘baidu.com’
[root@localhost 桌面]# curl www.changyou.com //当用changyou域名访问时，仅仅解析到changyou池
changyou
[root@localhost 桌面]# curl www.tarena.com
tarena
[root@localhost 桌面]# curl www.test.com //当默认访问时，仅仅解析到tarena池
tarena
[root@localhost 桌面]# curl 172.10.10.5 //当默认访问时，仅仅解析到tarena池
tarena
说明：客户端也可输入：http;//调度器IP或域名/admin?stats来查看后面各个节点是否处于正常状态，用户名和密码为：admin，123456，访问后如下图：
项目2：基于访问站点下的不同目录时，到后面对应池中找服务器的对应站点目录
haproxy机器：（双网卡：eth0:192.168.4.5 eth1:172.10.10.5）(不用配hosts解析，客户端也能识别)
[root@localhost 桌面]# ifconfig eth0 |head -2
eth0 Link encap:Ethernet HWaddr 00:0C:29:90:BC:2C
inet addr:192.168.4.5 Bcast:192.168.4.255 Mask:255.255.255.0
[root@localhost 桌面]# ifconfig eth1 |head -2
eth1 Link encap:Ethernet HWaddr 00:0C:29:90:BC:36
inet addr:172.10.10.5 Bcast:172.10.10.255 Mask:255.255.255.0
[root@localhost 桌面]# vim /etc/sysctl.conf //也可不开路由转发，养成习惯最好
net.ipv4.ip_forward = 1
wq
[root@localhost 桌面]# sysctl -p
[root@localhost 桌面]# yum -y install gcc gcc-c++
[root@localhost 桌面]# ls
haproxy-1.4.24.tar.gz
[root@localhost 桌面]# tar -zxf haproxy-1.4.24.tar.gz
[root@localhost 桌面]# ls
haproxy-1.4.24 haproxy-1.4.24.tar.gz
[root@localhost 桌面]# cd haproxy-1.4.24
[root@localhost haproxy-1.4.24]# ls
CHANGELOG ebtree LICENSE Makefile.osx src TODO
contrib examples Makefile README SUBVERS VERDATE
doc include Makefile.bsd ROADMAP tests VERSION
[root@localhost haproxy-1.4.24]# make TARGET=linux2628 ARCH=x86_64 //编译，target指定内核，架构选择
[root@localhost haproxy-1.4.24]# make PREFIX=/usr/local/haproxy install
[root@localhost haproxy-1.4.24]# cd /usr/local/haproxy/
[root@localhost haproxy]# ls
doc sbin share
[root@localhost haproxy]# mkdir conf logs var/run var/chroot -p //优化目录结构，也可不做，根据需要
[root@localhost haproxy]# ls
conf doc logs sbin share var
安装后链接变量路径和cp配置文件和启动脚本：
[root@localhost haproxy]# ln -s /usr/local/haproxy/sbin/haproxy /usr/sbin/
[root@localhost haproxy]# mkdir /etc/haproxy
[root@localhost haproxy]# cp /root/桌面
/haproxy-1.4.24/examples/haproxy.cfg /etc/haproxy/
[root@localhost haproxy]# cp /root/桌面
/haproxy-1.4.24/examples/haproxy.init /etc/init.d/haproxy
[root@localhost haproxy]# chmod +x /etc/init.d/haproxy
[root@localhost haproxy]# /etc/init.d/haproxy start //第一次启动会报错，配置文件模板需改
[root@localhost haproxy]# vim /etc/haproxy/haproxy.cfg
global
log 127.0.0.1:514 local0 warning
log 127.0.0.1 local1 notice
chroot /usr/local/haproxy/var/chroot
pidfile /usr/local/haproxy/var/run/haproxy.pid
maxconn 20480
nbproc 8
daemon
group haproxy
user haproxy
spread-checks 3
defaults
log global
option httplog
option dontlognull
retries 3
redispatch
maxconn 2000
contimeout 5000
clitimeout 50000
srvtimeout 50000
mode http
stats enable
stats uri /admin?stats
stats hide-version
stats auth admin:123456
balance roundrobin
frontend zdyname
mode http
stats enable
stats uri /admin?stats
stats hide-version
stats auth admin:123456
bind 172.10.10.5:80
acl zdy_cy path_beg /changyou
acl zdy_tarena path_beg /tarena
use_backend changyou if zdy_cy
use_backend tarena if zdy_tarena
backend changyou
balance roundrobin
option httpclose
option forwardfor
server web1 192.168.4.100:80 cookie A maxconn 2048 weight 1 check port 80 inter 2000 rise 2 fall 5
backend tarena
balance roundrobin
option httpclose
option forwardfor
server web2 192.168.4.200:80 cookie A maxconn 2048 weight 1 check port 80 inter 2000 rise 2 fall 5
wq
[root@localhost haproxy]# useradd -s /sbin/nologin haproxy -M
利用rsyslog配置haproxy记录日志功能： //当看
/usr/local/haproxy/logs/haproxy.log可看haproxy日志，只做下说明
[root@localhost haproxy]# echo “local0.* /usr/local/haproxy/logs/haproxy.log” >> /etc/rsyslog.conf
[root@localhost haproxy]# tail -1 /etc/rsyslog.conf
local0.*
/usr/local/haproxy/logs/haproxy.log //因为haproxy.cfg中是local0，用这个设备写日志
[root@localhost haproxy]# tail -1 /etc/sysconfig/rsyslog //这个不用动
SYSLOGD_OPTIOn=”-c 5″ //6.0版以上不用动，5.8版应写为：SYSLOGD_OPTIOn=”-c 2 -m 0 -r -x”,兼容2版本
[root@localhost haproxy]# /etc/init.d/rsyslog restart //启动记录haproxy日志服务，6.4版启动无端口
[root@localhost haproxy]# vim /etc/rsyslog.conf //解决rsyslog启动服务后无端口问题
$ModLoad imudp //注释取消
$UDPServerRun 514 //注释取消
wq
[root@localhost haproxy]# /etc/init.d/rsyslog restart
[root@localhost haproxy]# netstat -anptu |grep 514
udp 0 0 0.0.0.0:514 0.0.0.0:* 27715/rsyslogd
udp 0 0 :::514 :::* 27715/rsyslogd
[root@localhost haproxy]# /etc/init.d/haproxy start //启动haproxy服务
[root@localhost haproxy]# ps -elf |grep haproxy //查看进程
[root@localhost haproxy]# /etc/init.d/haproxy stop //停止haproxy
//也可以用源码启动，如下：
/usr/local/haproxy/sbin/haproxy -f /etc/haproxy/haproxy.cfg -c //检查语法
/usr/local/haproxy/sbin/haproxy -f /etc/haproxy/haproxy.cfg -D //启动 pkill haproxy //停止
-f指定配置文件，-D后台启动，-q安静的执行，-c检查语法，-n并发连接数，-m使用内存多少M限制,-p指定把pid号写到哪个文件去，-sf平滑重启参数。
两台web服务器上配置：（192.168.4.100上）
[root@localhost 桌面]# yum -y install httpd
[root@localhost 桌面]# /etc/init.d/httpd start
[root@localhost 桌面]# vim
/etc/httpd/conf/httpd.conf
#LogFormat “%h %l %u %t \”%r\” %>s %b” common //默认如此，修改为下面，把%h修改为:\”%{X-Forwarded-For}i\”
LogFormat “\”%{X-Forwarded-For}i\” %l %u %t \”%r\” %>s %b” common //记录客户端访问的真实IP
NameVirtualHost *:80
<VirtualHost *:80>
ServerAdmin [email protected]
DocumentRoot /changyou
ServerName www.changyou.com
ErrorLog logs/changyou-error_log
CustomLog logs/changyou-access_log common
</VirtualHost>
wq
[root@localhost 桌面]# mkdir /changyou/changyou -p
[root@localhost 桌面]# echo changyou >
/changyou/changyou/index.html
[root@localhost 桌面]# /etc/init.d/httpd restart
两台web服务器上配置：（192.168.4.200上）
[root@localhost 桌面]# yum -y install httpd
[root@localhost 桌面]# /etc/init.d/httpd start
[root@localhost 桌面]# vim
/etc/httpd/conf/httpd.conf
#LogFormat “%h %l %u %t \”%r\” %>s %b” common //默认如此，修改为下面，把%h修改为:\”%{X-Forwarded-For}i\”
LogFormat “\”%{X-Forwarded-For}i\” %l %u %t \”%r\” %>s %b” common //记录客户端访问的真实IP
NameVirtualHost *:80
<VirtualHost *:80>
ServerAdmin [email protected]
DocumentRoot /tarena
ServerName www.tarena.com
ErrorLog logs/tarena-error_log
CustomLog logs/tarena-access_log common
</VirtualHost>
wq
[root@localhost 桌面]# mkdir /tarena/tarena -p
[root@localhost 桌面]# echo tarena > /tarena/tarena/index.html
[root@localhost 桌面]# /etc/init.d/httpd restart
客户端访问调度器测试：（172.10.10.6）
[root@localhost 桌面]# vim /etc/hosts
172.10.10.5 www.changyou.com www.tarena.com www.test.com
[root@localhost 桌面]# curl www.changyou.com
<html><body><h1>503 Service Unavailable</h1>
No server is available to handle this request.
</body></html>
[root@localhost 桌面]# curl www.tarena.com
<html><body><h1>503 Service Unavailable</h1>
No server is available to handle this request.
</body></html>
[root@localhost 桌面]# curl
www.changyou.com/changyou/
changyou
[root@localhost 桌面]# curl www.tarena.com/tarena/
tarena
两台web把各自站点目录都删除：
192.168.4.100上：
[root@localhost 桌面]# rm -rf /changyou/changyou/
192.168.4.200上：
[root@localhost 桌面]# rm -rf /tarena/tarena/
客户端（172.10.10.6）访问调度器，客户端访问如下结果：
[root@localhost 桌面]# curl
www.changyou.com/changyou/
<!DOCTYPE HTML PUBLIC “-//IETF//DTD HTML 2.0//EN”>
<html><head>
<title>404 Not Found</title>
</head><body>
<h1>Not Found</h1>
<p>The requested URL /changyou/ was not found on this server.</p>
<hr>
<address>Apache/2.2.15 (Red Hat) Server at www.changyou.com Port 80</address>
</body></html>
[root@localhost 桌面]# curl www.tarena.com/tarena/
<!DOCTYPE HTML PUBLIC “-//IETF//DTD HTML 2.0//EN”>
<html><head>
<title>404 Not Found</title>
</head><body>
<h1>Not Found</h1>
<p>The requested URL /tarena/ was not found on this server.</p>
<hr>
<address>Apache/2.2.15 (Red Hat) Server at www.tarena.com Port 80</address>
</body></html>
说明：客户端也可输入：http;//调度器IP或域名/admin?stats来查看后面各个节点是否处于正常状态，用户名和密码为：admin，123456，访问如下图：
项目3：基于访问站点目录下的扩展名访问资源时，抛给对应后端池服务器访问
haproxy机器：（双网卡：eth0:192.168.4.5 eth1:172.10.10.5）(不用配hosts解析，客户端也能识别)
[root@localhost 桌面]# ifconfig eth0 |head -2
eth0 Link encap:Ethernet HWaddr 00:0C:29:90:BC:2C
inet addr:192.168.4.5 Bcast:192.168.4.255 Mask:255.255.255.0
[root@localhost 桌面]# ifconfig eth1 |head -2
eth1 Link encap:Ethernet HWaddr 00:0C:29:90:BC:36
inet addr:172.10.10.5 Bcast:172.10.10.255 Mask:255.255.255.0
[root@localhost 桌面]# vim /etc/sysctl.conf //也可不开路由转发，养成习惯最好
net.ipv4.ip_forward = 1
wq
[root@localhost 桌面]# sysctl -p
[root@localhost 桌面]# yum -y install gcc gcc-c++
[root@localhost 桌面]# ls
haproxy-1.4.24.tar.gz
[root@localhost 桌面]# tar -zxf haproxy-1.4.24.tar.gz
[root@localhost 桌面]# ls
haproxy-1.4.24 haproxy-1.4.24.tar.gz
[root@localhost 桌面]# cd haproxy-1.4.24
[root@localhost haproxy-1.4.24]# ls
CHANGELOG ebtree LICENSE Makefile.osx src TODO
contrib examples Makefile README SUBVERS VERDATE
doc include Makefile.bsd ROADMAP tests VERSION
[root@localhost haproxy-1.4.24]# make TARGET=linux2628 ARCH=x86_64 //编译，target指定内核，架构选择
[root@localhost haproxy-1.4.24]# make PREFIX=/usr/local/haproxy install
[root@localhost haproxy-1.4.24]# cd /usr/local/haproxy/
[root@localhost haproxy]# ls
doc sbin share
[root@localhost haproxy]# mkdir conf logs var/run var/chroot -p //优化目录结构，也可不做，根据需要
[root@localhost haproxy]# ls
conf doc logs sbin share var
安装后链接变量路径和cp配置文件和启动脚本：
[root@localhost haproxy]# ln -s /usr/local/haproxy/sbin/haproxy /usr/sbin/
[root@localhost haproxy]# mkdir /etc/haproxy
[root@localhost haproxy]# cp /root/桌面
/haproxy-1.4.24/examples/haproxy.cfg /etc/haproxy/
[root@localhost haproxy]# cp /root/桌面
/haproxy-1.4.24/examples/haproxy.init /etc/init.d/haproxy
[root@localhost haproxy]# chmod +x /etc/init.d/haproxy
[root@localhost haproxy]# /etc/init.d/haproxy start //第一次启动会报错，配置文件模板需改
[root@localhost haproxy]# vim /etc/haproxy/haproxy.cfg
global
log 127.0.0.1:514 local0 warning
log 127.0.0.1 local1 notice
chroot /usr/local/haproxy/var/chroot
pidfile /usr/local/haproxy/var/run/haproxy.pid
maxconn 20480
nbproc 8
daemon
group haproxy
user haproxy
spread-checks 3
defaults
log global
option httplog
option dontlognull
retries 3
redispatch
maxconn 2000
contimeout 5000
clitimeout 50000
srvtimeout 50000
mode http
stats enable
stats uri /admin?stats
stats hide-version
stats auth admin:123456
balance roundrobin
frontend zdyname
mode http
stats enable
stats uri /admin?stats
stats hide-version
stats auth admin:123456
bind 172.10.10.5:80
acl zdy_pic path_end .gif .png .jpg .css .js
acl zdy_static path_end .gif .png .jpg .css
use_backend static_changyou if zdy_pic or zdy_static
backend static_changyou
balance roundrobin
option httpclose
option forwardfor
server web1 192.168.4.100:80 cookie A maxconn 2048 weight 1 check port 80 inter 2000 rise 2 fall 5
backend tarena
balance roundrobin
option httpclose
option forwardfor
server web2 192.168.4.200:80 cookie A maxconn 2048 weight 1 check port 80 inter 2000 rise 2 fall 5
wq
[root@localhost haproxy]# useradd -s /sbin/nologin haproxy -M
利用rsyslog配置haproxy记录日志功能： //当看
/usr/local/haproxy/logs/haproxy.log可看haproxy日志，只做下说明
[root@localhost haproxy]# echo “local0.* /usr/local/haproxy/logs/haproxy.log” >> /etc/rsyslog.conf
[root@localhost haproxy]# tail -1 /etc/rsyslog.conf
local0.*
/usr/local/haproxy/logs/haproxy.log //因为haproxy.cfg中是local0，用这个设备写日志
[root@localhost haproxy]# tail -1 /etc/sysconfig/rsyslog //这个不用动
SYSLOGD_OPTIOn=”-c 5″ //6.0版以上不用动，5.8版应写为：SYSLOGD_OPTIOn=”-c 2 -m 0 -r -x”,兼容2版本
[root@localhost haproxy]# /etc/init.d/rsyslog restart //启动记录haproxy日志服务，6.4版启动无端口
[root@localhost haproxy]# vim /etc/rsyslog.conf //解决rsyslog启动服务后无端口问题
$ModLoad imudp //注释取消
$UDPServerRun 514 //注释取消
wq
[root@localhost haproxy]# /etc/init.d/rsyslog restart
[root@localhost haproxy]# netstat -anptu |grep 514
udp 0 0 0.0.0.0:514 0.0.0.0:* 27715/rsyslogd
udp 0 0 :::514 :::* 27715/rsyslogd
[root@localhost haproxy]# /etc/init.d/haproxy start //启动haproxy服务
[root@localhost haproxy]# ps -elf |grep haproxy //查看进程
[root@localhost haproxy]# /etc/init.d/haproxy stop //停止haproxy
//也可以用源码启动，如下：
/usr/local/haproxy/sbin/haproxy -f /etc/haproxy/haproxy.cfg -c //检查语法
/usr/local/haproxy/sbin/haproxy -f /etc/haproxy/haproxy.cfg -D //启动 pkill haproxy //停止
-f指定配置文件，-D后台启动，-q安静的执行，-c检查语法，-n并发连接数，-m使用内存多少M限制,-p指定把pid号写到哪个文件去，-sf平滑重启参数。
两台web服务器上配置：（192.168.4.100上）
[root@localhost 桌面]# yum -y install httpd
[root@localhost 桌面]# /etc/init.d/httpd start
[root@localhost 桌面]# vim
/etc/httpd/conf/httpd.conf
#LogFormat “%h %l %u %t \”%r\” %>s %b” common //默认如此，修改为下面，把%h修改为:\”%{X-Forwarded-For}i\”
LogFormat “\”%{X-Forwarded-For}i\” %l %u %t \”%r\” %>s %b” common //记录客户端访问的真实IP
NameVirtualHost *:80
<VirtualHost *:80>
ServerAdmin [email protected]
DocumentRoot /changyou
ServerName www.changyou.com
ErrorLog logs/changyou-error_log
CustomLog logs/changyou-access_log common
</VirtualHost>
wq
[root@localhost 桌面]# mkdir /changyou
[root@localhost 桌面]# mv changyou.jpg /changyou/
[root@localhost 桌面]# ls /changyou/
changyou.jpg
[root@localhost 桌面]# /etc/init.d/httpd restart
两台web服务器上配置：（192.168.4.200上）
[root@localhost 桌面]# yum -y install httpd
[root@localhost 桌面]# /etc/init.d/httpd start
[root@localhost 桌面]# vim
/etc/httpd/conf/httpd.conf
#LogFormat “%h %l %u %t \”%r\” %>s %b” common //默认如此，修改为下面，把%h修改为:\”%{X-Forwarded-For}i\”
LogFormat “\”%{X-Forwarded-For}i\” %l %u %t \”%r\” %>s %b” common //记录客户端访问的真实IP
NameVirtualHost *:80
<VirtualHost *:80>
ServerAdmin [email protected]
DocumentRoot /tarena
ServerName www.tarena.com
ErrorLog logs/tarena-error_log
CustomLog logs/tarena-access_log common
</VirtualHost>
wq
[root@localhost 桌面]# mkdir /tarena
[root@localhost 桌面]# mv tarena.jpg /tarena/
[root@localhost 桌面]# ls /tarena/
tarena.jpg
[root@localhost 桌面]# /etc/init.d/httpd restart
客户端访问调度器测试：（172.10.10.6）
[root@localhost 桌面]# vim /etc/hosts
172.10.10.5 www.changyou.com www.tarena.com www.test.com
说明：客户端也可输入：http;//调度器IP或域名/admin?stats来查看后面各个节点是否处于正常状态，用户名和密码为：admin，123456，访问时如下图：
项目4：定义域名acl规则，根据不同域名抛给后面对应服务器池中，但基于端口和IP访问限制做控制
要求：访问www.chagnyou.com时,抛给后面的chagnyou池，默认的IP或域名访问时，默认抛给后面的tarena池。
haproxy机器：（双网卡：eth0:192.168.4.5 eth1:172.10.10.5）(不用配hosts解析，客户端也能识别)
[root@localhost 桌面]# ifconfig eth0 |head -2
eth0 Link encap:Ethernet HWaddr 00:0C:29:90:BC:2C
inet addr:192.168.4.5 Bcast:192.168.4.255 Mask:255.255.255.0
[root@localhost 桌面]# ifconfig eth1 |head -2
eth1 Link encap:Ethernet HWaddr 00:0C:29:90:BC:36
inet addr:172.10.10.5 Bcast:172.10.10.255 Mask:255.255.255.0
[root@localhost 桌面]# vim /etc/sysctl.conf //也可不开路由转发，养成习惯最好
net.ipv4.ip_forward = 1
wq
[root@localhost 桌面]# sysctl -p
[root@localhost 桌面]# yum -y install gcc gcc-c++
[root@localhost 桌面]# ls
haproxy-1.4.24.tar.gz
[root@localhost 桌面]# tar -zxf haproxy-1.4.24.tar.gz
[root@localhost 桌面]# ls
haproxy-1.4.24 haproxy-1.4.24.tar.gz
[root@localhost 桌面]# cd haproxy-1.4.24
[root@localhost haproxy-1.4.24]# ls
CHANGELOG ebtree LICENSE Makefile.osx src TODO
contrib examples Makefile README SUBVERS VERDATE
doc include Makefile.bsd ROADMAP tests VERSION
[root@localhost haproxy-1.4.24]# make TARGET=linux2628 ARCH=x86_64 //编译，target指定内核，架构选择
[root@localhost haproxy-1.4.24]# make PREFIX=/usr/local/haproxy install
[root@localhost haproxy-1.4.24]# cd /usr/local/haproxy/
[root@localhost haproxy]# ls
doc sbin share
[root@localhost haproxy]# mkdir conf logs var/run var/chroot -p //优化目录结构，也可不做，根据需要
[root@localhost haproxy]# ls
conf doc logs sbin share var
安装后链接变量路径和cp配置文件和启动脚本：
[root@localhost haproxy]# ln -s /usr/local/haproxy/sbin/haproxy /usr/sbin/
[root@localhost haproxy]# mkdir /etc/haproxy
[root@localhost haproxy]# cp /root/桌面
/haproxy-1.4.24/examples/haproxy.cfg /etc/haproxy/
[root@localhost haproxy]# cp /root/桌面
/haproxy-1.4.24/examples/haproxy.init /etc/init.d/haproxy
[root@localhost haproxy]# chmod +x /etc/init.d/haproxy
[root@localhost haproxy]# /etc/init.d/haproxy start //第一次启动会报错，配置文件模板需改
[root@localhost haproxy]# vim /etc/haproxy/haproxy.cfg
global
log 127.0.0.1:514 local0 warning
log 127.0.0.1 local1 notice
chroot /usr/local/haproxy/var/chroot
pidfile /usr/local/haproxy/var/run/haproxy.pid
maxconn 20480
nbproc 8
daemon
group haproxy
user haproxy
spread-checks 3
defaults
log global
option httplog
option dontlognull
retries 3
redispatch
maxconn 2000
contimeout 5000
clitimeout 50000
srvtimeout 50000
mode http
stats enable
stats uri /admin?stats
stats hide-version
stats auth admin:123456
balance roundrobin
frontend zdyname
mode http
stats enable
stats uri /admin?stats
stats hide-version
stats auth admin:123456
bind 172.10.10.5:80
#acl zdy_valid_ip src 192.168.4.0/24 //也可对网段进行限制，这里是合法的网段
acl zdy_valid_ip src 172.10.10.6 #//这里是合法的IP
block if !zdy_valid_ip #//如果不是合法的IP，则丢弃，不给代理
acl cy_zdyname hdr(host) -i www.changyou.com
use_backend changyou if cy_zdyname
default_backend tarena
backend changyou
balance roundrobin
option httpclose
option forwardfor
server web1 192.168.4.100:80 cookie A maxconn 2048 weight 1 check port 80 inter 2000 rise 2 fall 5
backend tarena
balance roundrobin
option httpclose
option forwardfor
server web2 192.168.4.200:80 cookie A maxconn 2048 weight 1 check port 80 inter 2000 rise 2 fall 5
wq
[root@localhost haproxy]# useradd -s /sbin/nologin haproxy -M
利用rsyslog配置haproxy记录日志功能： //当看
/usr/local/haproxy/logs/haproxy.log可看haproxy日志，只做下说明
[root@localhost haproxy]# echo “local0.* /usr/local/haproxy/logs/haproxy.log” >> /etc/rsyslog.conf
[root@localhost haproxy]# tail -1 /etc/rsyslog.conf
local0.*
/usr/local/haproxy/logs/haproxy.log //因为haproxy.cfg中是local0，用这个设备写日志
[root@localhost haproxy]# tail -1 /etc/sysconfig/rsyslog //这个不用动
SYSLOGD_OPTIOn=”-c 5″ //6.0版以上不用动，5.8版应写为：SYSLOGD_OPTIOn=”-c 2 -m 0 -r -x”,兼容2版本
[root@localhost haproxy]# /etc/init.d/rsyslog restart //启动记录haproxy日志服务，6.4版启动无端口
[root@localhost haproxy]# vim /etc/rsyslog.conf //解决rsyslog启动服务后无端口问题
$ModLoad imudp //注释取消
$UDPServerRun 514 //注释取消
wq
[root@localhost haproxy]# /etc/init.d/rsyslog restart
[root@localhost haproxy]# netstat -anptu |grep 514
udp 0 0 0.0.0.0:514 0.0.0.0:* 27715/rsyslogd
udp 0 0 :::514 :::* 27715/rsyslogd
[root@localhost haproxy]# /etc/init.d/haproxy start //启动haproxy服务
[root@localhost haproxy]# ps -elf |grep haproxy //查看进程
[root@localhost haproxy]# /etc/init.d/haproxy stop //停止haproxy
//也可以用源码启动，如下：
/usr/local/haproxy/sbin/haproxy -f /etc/haproxy/haproxy.cfg -c //检查语法
/usr/local/haproxy/sbin/haproxy -f /etc/haproxy/haproxy.cfg -D //启动 pkill haproxy //停止
-f指定配置文件，-D后台启动，-q安静的执行，-c检查语法，-n并发连接数，-m使用内存多少M限制,-p指定把pid号写到哪个文件去，-sf平滑重启参数。
两台web服务器上配置：（192.168.4.100上）
[root@localhost 桌面]# yum -y install httpd
[root@localhost 桌面]# /etc/init.d/httpd start
[root@localhost 桌面]# vim
/etc/httpd/conf/httpd.conf
#LogFormat “%h %l %u %t \”%r\” %>s %b” common //默认如此，修改为下面，把%h修改为:\”%{X-Forwarded-For}i\”
LogFormat “\”%{X-Forwarded-For}i\” %l %u %t \”%r\” %>s %b” common //记录客户端访问的真实IP
NameVirtualHost *:80
<VirtualHost *:80>
ServerAdmin [email protected]
DocumentRoot /changyou
ServerName www.changyou.com
ErrorLog logs/changyou-error_log
CustomLog logs/changyou-access_log common
</VirtualHost>
wq
[root@localhost 桌面]# mkdir /changyou
[root@localhost 桌面]# echo changyou > /changyou/index.html
[root@localhost 桌面]# /etc/init.d/httpd restart
两台web服务器上配置：（192.168.4.200上）
[root@localhost 桌面]# yum -y install httpd
[root@localhost 桌面]# /etc/init.d/httpd start
[root@localhost 桌面]# vim
/etc/httpd/conf/httpd.conf
#LogFormat “%h %l %u %t \”%r\” %>s %b” common //默认如此，修改为下面，把%h修改为:\”%{X-Forwarded-For}i\”
LogFormat “\”%{X-Forwarded-For}i\” %l %u %t \”%r\” %>s %b” common //记录客户端访问的真实IP
NameVirtualHost *:80
<VirtualHost *:80>
ServerAdmin [email protected]
DocumentRoot /tarena
ServerName www.tarena.com
ErrorLog logs/tarena-error_log
CustomLog logs/tarena-access_log common
</VirtualHost>
wq
[root@localhost 桌面]# mkdir /tarena
[root@localhost 桌面]# echo tarena > /tarena/index.html
[root@localhost 桌面]# /etc/init.d/httpd restart
客户端访问调度器测试：（172.10.10.6） //成功给代理
[root@localhost 桌面]# vim /etc/hosts
172.10.10.5 www.changyou.com www.tarena.com www.test.com
[root@localhost 桌面]# curl www.changyou.com //当用changyou域名访问时，仅仅解析到changyou池
changyou
[root@localhost 桌面]# curl www.tarena.com
tarena
[root@localhost 桌面]# curl www.test.com //当默认访问时，仅仅解析到tarena池
tarena
[root@localhost 桌面]# curl 172.10.10.5 //当默认访问时，仅仅解析到tarena池
tarena
客户端访问调度器测试：（172.10.10.8） //不给代理，访问不到
[root@localhost 桌面]# curl www.changyou.com
<html><body><h1>403 Forbidden</h1>
Request forbidden by administrative rules.
</body></html>
[root@localhost 桌面]# curl www.tarena.com
<html><body><h1>403 Forbidden</h1>
Request forbidden by administrative rules.
</body></html>
[root@localhost 桌面]# curl www.test.com
<html><body><h1>403 Forbidden</h1>
Request forbidden by administrative rules.
</body></html>
[root@localhost 桌面]# curl 172.10.10.5
<html><body><h1>403 Forbidden</h1>
Request forbidden by administrative rules.
</body></html>
说明：客户端也可输入：http;//调度器IP或域名/admin?stats来查看后面各个节点是否处于正常状态，用户名和密码为：admin，123456，访问后如下图：
