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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 &

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