基于 MySQL 5.6 keepalived的双主搭建

环境介绍：

说明	IP
节点1	192.168.56.56
节点2	192.168.56.57
w_ip	192.168.56.6

安装keepalived

tar -zxvf keepalived-1.2.2.tar.gz

cd keepalived-1.2.2

./configure --prefix=/usr/local/keepalived

make && make install

 

 

 

mkdir /etc/keepalived

cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf

cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/

cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/

cp /usr/local/keepalived/sbin/keepalived /usr/sbin/

chkconfig --level 2345 keepalived on 

 

双主：

都跑到3306 这个端口

 

创建一个监控用户：

GRANT REPLICATION CLIENT ON *.* TO 'monitor'@'%' IDENTIFIED BY 'oracle';

 

目的

在于搭建一个基于双主，加一个从库的结构。

/etc/keepalived/checkMySQL.py -h 10.37.129.10 -P 3306

Traceback (most recent call last):

File "/etc/keepalived/checkMySQL.py", line 8, in <module>

import MySQLdb

File "/usr/local/lib/python2.7/site-packages/MySQLdb/__init__.py", line 19, in <module>

import _mysql

ImportError: libmysqlclient.so.18: cannot open shared object file: Nosuch file or directory

处理办法：

/etc/ld.so.conf.d/mysql-x86_64.conf中添加

/usr/local/mysql/lib/  

 

 

ldconfig  

 

后即可。

待处理的：

进入master/backup对read-only的处理  

 

 

配置文件

keepalived

/etc/keepalived/keepalived.conf

vrrp_script vs_mysql_82 {

script "/etc/keepalived/checkMySQL.py -h 192.168.11.82 -P 3306"

interval 30

}

vrrp_instance VI_82 {

state BACKUP

nopreempt

interface eth0

virtual_router_id 82#同一集群中该数值要相同

priority 100

advert_int 5

authentication {

auth_type PASS#Auth 用密码，但密码不要超过8位

auth_pass 82565387

}

track_script {

vs_mysql_82

}

virtual_ipaddress {

192.168.11.100

}

}

checkMySQL.py这个脚本是用来确认本地的MySQL是否可以连接上去，相当于做了一个Connect ping .