Haproxy implementing MySQL Slave Library load Balancing

This article mainly describes the implementation of MySQL from the library through Haproxy load balancing, as for MySQL master-slave construction, this article no longer repeat, you can refer to my previous blog. 1. Download the Haproxy package first

wget http://haproxy.1wt.eu/download/1.4/src/haproxy-1.4.13.tar.gz

2. Installation

tar zxvf haproxy-1.4. . Tar . GZCD haproxy-1.4. /Make target=linux26 prefix=/usr/local/haproxy # #我的系统内核为2. 6, so target=linux26makeinstall Prefix=/usr/local/haproxy

3. Configure

mkdir /etc/haproxytouch /etc/haproxy/haproxy.cfgvi /etc/haproxy/ Haproxy.cfg

# #写入以下内容:

Global Daemon Nbproc1Pidfile/var/run/haproxy.piddefaults Mode tcp #默认的模式mode {TCP|http|Health },tcp is Layer 4, HTTP is 7 layer, health will return OK retries2#两次连接失败就认为是服务器不可用, you can also force direct to other healthy servers by setting the option Redispatch #当serverId对应的服务器挂掉后 later opt Ion Abortonclose #当服务器负载很高的时候, automatically end the current queue processing more than the long link maxconn4096#默认的最大连接数 Timeout Connect 5000ms #连接超时 timeout client 30000ms #客户端超时 Timeout server 30000ms #服务器超时 #timeout Check -#=heartbeat detection Timeout log127.0.0.1Local0 Err #[err WarningInfodebug]####### #test1配置 ################ #listen test1 bind0.0.0.0:3306Mode TCP #maxconn4086#log127.0.0.1local0 Debug Server S1192.168.103.59:3306Server S2192.168.103.52:3306####### #frontend配置 ##############

Under the Test1 configuration, add the server S1 192.168.103.59:3306 and server S2 192.168.103.52:3306, which is the MySQL IP and port number from the library, and multiple additions from the library continue below. 4. Start Haproxy inunzip the directory to execute haproxy-f/etc/haproxy/haproxy.cfgFirst stop the program that occupies Port 3306 haproxy-f/etc/haproxy/haproxy.cfg (if prompt error: bash:haproxy: Command not foundPerform1 cd/usr/local/haproxy/sbin 2./haproxy-f/etc/haproxy/haproxy.cfg  5. Test using NAVICAT connection to install the Haproxy machine first connected to the 52 close connection, re-connect 103.55 visible to achieve MySQL load balancing. 6. Other considerations View Haproxy's Process Ps-ef | grep haproxy kill-9 28924 kill Haproxy running process and connect 55 failed View All processes ps-ef Modify configuration file: Restart Haproxy:

Haproxy implementing MySQL Slave Library load Balancing