下载地址：
http://www.haproxy.org/#down
文档地址：
http://www.haproxy.org/#doc1.6
下载好源码之后，解压：
安装 make install
cat /etc/test-sql.cfg
# This is a test configuration.
# It requires a mysql server running on local port 3306.
global
maxconn 500
pidfile /tmp/proxy.pid
defaults
contimeout 1000
clitimeout 5000
srvtimeout 5000
retries 1
option redispatch
mode tcp
listen test
bind :3307
mode tcp
balance roundrobin
option tcp-check
#option mysql-check user haproxy
server srv1 10.10.230.172:3306 check port 3306 inter 1000 fall 1
# server srv2 127.0.0.2:3306 check port 3306 inter 1000 fall 1
# server srv3 127.0.0.3:3306 check port 3306 inter 1000 fall 1
# server srv4 127.0.0.4:3306 check port 3306 inter 1000 fall 1
启动：
haproxy -f /etc/test-sql.cfg
[root@10-10-157-43 tests]# ps -ef |grep pro
root 3177 728 0 19:59 pts/0 00:00:00 haproxy -f /etc/test-sql.cfg
root 3187 728 0 20:00 pts/0 00:00:00 grep pro
重新加载：
[root@10-10-157-43 tests]# haproxy -f /etc/test-sql.cfg -sf 3177 &
转载请注明源出处
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