centos系统安装haproxy
http://pachiratech-yuan.iteye.com/blog/1003084在命令行里执行下列命令。
1.在/usr/local下创建haproxy文件夹
cd /usr/local
1.下载haproxy-1.3.15.7.tar.gz
wget http://haproxy.1wt.eu/download/1.3/src/haproxy-1.3.15.7.tar.gz
2.解压缩haproxy-1.3.15.7.tar.gz
tar -zxvf haproxy-1.3.15.7.tar.gz
3.进入haproxy-1.3.15.7
cd haproxy-1.3.15.7
4.开始安装
make TARGET=linux86 PREFIX=/usr/local/haproxy#TARGET=linux86表示电脑内核，使用uname -a命令查看内核信息 这执行这行时如果报错gcc :错误，说明该centos系统没有安装gcc编译器执行yum -y install gcc就行了
make install PREFIX=/usr/local/haproxy
5.新建haproxy.cfg
vi /usr/lcoal/haproxy/haproxy.cfg
6.配置haproxy.cfg
global
log 127.0.0.1 local2
chroot /usr/local/haproxy
pidfile /var/run/haproxy.pid
maxconn 4000
#user haproxy
#group haproxy
daemon
defaults
mode http
log global
option dontlognull
option httpclose
option httplog
option forwardfor
option redispatch
stats uri /haproxy-stats #haproxy 监控页面的访问地址
timeout connect 10000 # default 10 second time out if a backend is not found
timeout client 300000
timeout server 300000
maxconn 60000
retries 3
frontendmain *:80
default_backend S
backend QianYuSrv
cookie JSESSIONID prefix
stats enable
stats auth pachira:temp4now
balance roundrobin
serverS 192.168.122.129:80 cookie JSESS1 check
serverS 192.168.123.129:80 cookie JSESS2 check
7.访问：http://localhost/haproxy-stats
8.启动haproxy
/usr/local/haproxy/sbin/haproxy -f /usr/local/haproxy/haproxy.cfg
9.测试
在本机上打上访问地址测试是否成功：
http://localhost:80//S项目的访问地址。
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