HAproxy负载均衡MYSQL双主
HAproxy负载均衡MYSQL双主OS
IP
子网掩码
路由网关
Centos6.6
（DB:MYSQL）
Eth0:192.168.26.211
255.255.252.0
192.168.25.3
Centos6.6
（DB:MYSQL）
Eth0:192.168.26.212
255.255.252.0
192.168.25.3
Centos6.6
（HAproxy）
Eth0:192.168.26.210
255.255.252.0
192.168.25.3
安装mysql:192.168.26.211
Yum install –y mysql-server
Service mysqld start
安装mysql:192.168.26.212
Yum install –y mysql-server
Service mysqld start
配置MYSQL双主：192.168.26.211
Vim /etc/my.cnf
配置文件如下：
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
server-id=211
log-bin=mysq-bin
relay-log=relay-bin
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld
创建远程所有权账号：
grant replication slave,replication client on *.* to 'jerry'@'192.168.%.%'>
change master to master_host='192.168.26.212',master_user='jerrys',master_password='jerrypass',master_log_file='mysql-bin.000001',master_log_pos=282;
Start slave;
双主配置：192.168.26.212
Vim /etc/my.cnf
配置文件如下：
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
server-id=212
log-bin=mysql-bin
relay-log=relay-bin
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
授权远程访问账号：
grant replication slave,replication client on *.* to 'jerry'@'192.168.%.%'>
change master to master_host='192.168.26.211',master_user='jerry',master_password='jerrypass',master_log_file='mysql-bin.000001',master_log_pos=281;
Start slave;
配置HAproxy:192.168.26.210
安装：yum install –y haproxy
编辑配置文件：vim /etc/haproxy/haproxy.cfg
配置文件如下：
#---------------------------------------------------------------------
# Example configuration for a possible web application.See the
# full configuration options online.
#
# http://haproxy.1wt.eu/download/1.4/doc/configuration.txt
#
#---------------------------------------------------------------------
#---------------------------------------------------------------------
# Global settings
#---------------------------------------------------------------------
global
# to have these messages end up in /var/log/haproxy.log you will
# need to:
#
# 1) configure syslog to accept network log events.This is done
# by adding the '-r' option to the SYSLOGD_OPTIONS in
# /etc/sysconfig/syslog
#
# 2) configure local2 events to go to the /var/log/haproxy.log
# file. A line like the following can be added to
# /etc/sysconfig/syslog
#
# local2.* /var/log/haproxy.log
#
log 127.0.0.1 local2
chroot /var/lib/haproxy
pidfile /var/run/haproxy.pid
maxconn 4000
user haproxy
group haproxy
daemon
# turn on stats unix socket
stats socket /var/lib/haproxy/stats
#---------------------------------------------------------------------
# common defaults that all the 'listen' and 'backend' sections will
# use if not designated in their block
#---------------------------------------------------------------------
defaults
mode tcp
log global
option httplog
option dontlognull
option http-server-close
option forwardfor except 127.0.0.0/8
option redispatch
retries 3
timeout http-request 10s
timeout queue 1m
timeout connect 10s
timeout client 1m
timeout server 1m
timeout http-keep-alive 10s
timeout check 10s
maxconn 3000
#---------------------------------------------------------------------
# main frontend which proxys to the backends
#---------------------------------------------------------------------
#frontendmain *:5000
# acl url_static path_beg -i /static /images /javascript /stylesheets
# acl url_static path_end -i .jpg .gif .png .css .js
#
# use_backend static if url_static
# default_backend app
#
##---------------------------------------------------------------------
## static backend for serving up images, stylesheets and such
##---------------------------------------------------------------------
#backend static
# balance roundrobin
# server static 127.0.0.1:4331 check
frontend websrv *:3306
default_backend mysqlservers
backend mysqlservers
balanceleastconn
server m1 192.168.26.211:3306check port 3306 maxconn 300
server m2 192.168.26.212:3306check port 3306 maxconn 300
listen static
modehttp
bind *:8008
stats enable
stats uri /haadmin?stats
stats auth admin:admin
stats hide-version
stats admin if TRUE
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