作者：split_two
环境四台机器都是RedHat4.8（64位）版本：
IP地址 用处
192.168.5.55 MASTER
192.168.2.73 BACKUP
192.168.5.54 负载A
192.168.5.57 负载B
192.168.2.100 VIP
1、MASTER上安装haproxy
wget http://haproxy.1wt.eu/download/1.3/src/haproxy-1.3.20.tar.gz /root
解压到当前目录
tar zxvf haproxy-1.3.20.tar.gz
进到此目录
cd haproxy-1.3.20
编译及安装，安装到/usr/local目录，但是安装完此目录下没有haproxy文件夹，我也很奇怪！
make TARGET=linux26 prefix=/usr/local/haproxy install
但是出来的结果会提示如下信息
install -d /usr/local/sbin
install haproxy /usr/local/sbin
install -d /usr/local/share/man/man1
install -m 644 doc/haproxy.1 /usr/local/share/man/man1
install -d /usr/local/doc/haproxy
for x in configuration architecture haproxy-en haproxy-fr; do
install -m 644 doc/$x.txt /usr/local/doc/haproxy ;
done
提示你启动haproxy在sbin目录，其余的在doc目录
进入到haproxy目录
cd /usr/local/doc/haproxy
新建一个haproxy主配置文件
vi haproxy.cfg
global
log 127.0.0.1 local0
maxconn 4096
chroot /usr/local/doc/haproxy
uid 501
gid 501
daemon
nbproc 1
pidfile /usr/local/doc/haproxy/haproxy.pid
defaults
log 127.0.0.1 local3
mode http
option httplog
option httpclose
option dontlognull
option forwardfor
option redispatch
retries 2
maxconn 2000
balance roundrobin
stats uri /haproxy-status 查看状态
stats hide-version 隐藏haproxy版本
stats realm Gemini Haproxy 查看状态需要口令
stats auth admin:admin 用户名和密码
contimeout 5000
clitimeout 50000
srvtimeout 50000
listen web_proxy 192.168.2.100:80
server web1 192.168.5.54:8080 cookie app1inst1 check inter 2000 rise 2 fall 5
server web2 192.168.5.57:8080 cookie app1inst2 check inter 2000 rise 2 fall 5
2、MASTER安装keepalived
tar zxvf keepalived-1.1.15.tar.gz
vi /usr/src/kernels/2.6.9-89.EL-smp-x86_64/include/linux/types.h
将如下两行注释掉，否则编译会出错，跟我这个版本的系统有关系，你的也许不要！
