haproxy给mysql做负载均衡

一、首先安装haproxy

wget http://haproxy.1wt.eu/download/1.4/src/haproxy-1.4.24.tar.gz

tar zcvf haproxy-1.4.24.tar.gz

cd haproxy-1.4.24

make TARGET=linux26 PREFIX=/usr/local/haproxy #将haproxy安装到/usr/local/haproxy

make install PREFIX=/usr/local/haproxy

#PREFIX必须用大写,否则无法安装到指定目录/usr/local/haproxy中

二、配置

在/usr/local/haproxy/etc/下新建haproxy.cfg配置文件。内容为：

 

global

        log 127.0.0.1   local0 info    #日志相关

        log 127.0.0.1   local1 notice

        maxconn 4096

        chroot /usr/local/haproxy

        uid root

        gid root

        daemon

        #debug

        #quiet

        pidfile /usr/local/haproxy/haproxy.pid

 

defaults

        log     global

        mode    http

        #option httplog

        option  dontlognull

        retries 3

        option redispatch

        maxconn         2000

        contimeout      5000

        clitimeout      50000

        srvtimeout      50000

 

listen  mysql

        bind 0.0.0.0:23306    #代理端口

        mode tcp              #模式 TCP

        option mysql-check user root   #mysql健康检查  root为mysql登录用户名

        balance roundrobin            #调度算法

        server mysql1 192.168.153.128:3306 weight 1 check  inter 1s rise 2 fall 2 #健康检查加上check

        server mysql2 192.168.153.134:3306 weight 1 check  inter 1s rise 2 fall 2

listen stats     #监控

           mode http

           bind 0.0.0.0:8888

           stats enable

           stats uri /dbs

           stats realm Global\ statistics

           stats auth admin:admin

 

#option mysql-check user root #mysql健康检查 root为mysql登录用户名 注释掉 

 

两个用户都要开启mysql服务

三、启动

[root@web2 etc]# /usr/local/haproxy/sbin/haproxy -f /usr/local/haproxy/etc/haproxy.cfg

 

[root@web2 etc]# cd ../sbin/

 

[root@web2 sbin]# ls

 

haproxy

 

[root@web2 sbin]# ps -ef | grep haproxy

 

root 4223 1 0 18:12 ? 00:00:00 /usr/local/haproxy/sbin/haproxy -f /usr/local/haproxy/etc/haproxy.cfg

 

root 4228 3754 0 18:12 pts/0 00:00:00 grep haproxy

 

[root@web2 sbin]# 

四、访问

ip:8888/dbs

输入admin admin登录