1.下载HAProxy
http://haproxy.1wt.eu/download/1.4/src/haproxy-1.4.22.tar.gz
2. 安装haproxy
#tar zxvf haproxy-1.4.22.tar.gz
#cd haproxy-1.4.22
#make TARGET=linux26
#make install
3. 创建haproxy用户和组
#groupadd haproxy
#useradd haproxy（useradd -g haproxy haproxy）
4、haproxy配置文件（/etc/haproxy.cfg）
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global
log 127.0.0.1 local0
maxconn 4096
chroot /usr/local
uid 99
gid 99
daemon
nbproc 1
pidfile /usr/local/run/haproxy.pid
#debug
#quiet
defaults
log 127.0.0.1 local3
mode http
option dontlognull
retries 2
maxconn 2000
balance roundrobin
contimeout 5000
clitimeout 50000
srvtimeout 50000
listen web_proxy 0.0.0.0:1080
option httpchk GET /ping.jsp
stats uri /haproxy-stats
listen postgres
bind 0.0.0.0:5433
mode tcp
balance roundrobin
server db1 192.168.111.151:5432 weight 1 maxconn 10000 check inter 10s
server db2 192.168.111.152:5432 weight 1 maxconn 10000 check inter 10s
server db3 192.168.111.153:5432 weight 1 maxconn 10000 check inter 10s
server db4 192.168.111.154:5432 weight 1 maxconn 10000 check inter 10s
server db5 192.168.111.155:5432 weight 1 maxconn 10000 check inter 10s
server db6 192.168.111.156:5432 weight 1 maxconn 10000 check inter 10s
server db7 192.168.111.157:5432 weight 1 maxconn 10000 check inter 10s
server db8 192.168.111.158:5432 weight 1 maxconn 10000 check inter 10s
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5. 创建haproxy服务
1）创建haproxy启动脚本
#/etc/init.d/haproxy
文件内容如下
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#! /bin/sh
PROGDIR=/usr/local
PROGNAME=haproxy
DAEMON=$PROGDIR/sbin/$PROGNAME
CONFIG=/etc/$PROGNAME.cfg
PIDFILE=$PROGDIR/run/$PROGNAME.pid
DESC="HAProxy daemon"
SCRIPTNAME=/etc/init.d/$PROGNAME
# Gracefully exit if the package has been removed.
test -x $DAEMON || exit 0
start()
{
echo -n "Starting $DESC: $PROGNAME"
$DAEMON -f $CONFIG
echo "."
}
stop()
{
echo -n "Stopping $DESC: $PROGNAME"
cat $PIDFILE | xargs kill
echo "."
}
case "$1" in
start)
start
;;
stop)
stop
;;
*)
echo "Usage: $SCRIPTNAME {start|stop}" >&2
exit 1
;;
esac
exit 0
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启动服务
service haproxy start
可能问题：
创建run目录
2）创建haxproxy服务
#chkconfig --add haproxy
#chkconfig haproxy on
六、测试
在浏览器里面输入：http://192.168.111.150:1080/haproxy-stats，可以看到haproxy的监控界面。
