HeartBeat基于CRM使用NFS对MySQL高可用

shellching 2014-03-22

NFS共享存储节点配置:
# mkdir /mydata
# vim /etc/exports
 /mydata  192.168.100.0/24(no_root_squash,rw)
# service nfs restart
# groupadd -g 3306 mysql
# useradd -g 3306 -u 3306 -s /sbin/nologin -M mysql
# chown -R /mydata
注:这里必需将nfs共享的资源设定为no_root_squash,否则mysql服务无法启动

 

Node节点配置:
在这里node1与node2的配置完全一样

# groupadd -g 3306 mysql
# useradd -g 3306 -u 3306 -s /sbin/nologin -M mysql
# mkdir /mydata
# tar xvf mysql-5.5.22-linux2.6-i686.tar.gz -C /usr/local/
# cd /usr/local/
# ln -s mysql-5.5.22-linux2.6-i686/ mysql
# cd mysql
# chown -R root:mysql .
# mount -t nfs 192.168.100.9:/mydata /mydata
# cd /usr/local/mysql/
# scripts/mysql_install_db --user=mysql --datadir=/mydata/data
# ln -s /usr/local/mysql/bin/* /usr/bin/
# cp support-files/my-large.cnf /etc/my.cnf
# vim /etc/my.cnf
    datadir = /mydata/data
    innodb_file_per_table = 1
# cp support-files/mysql.server /etc/init.d/mysqld
# chkconfig --add mysqld
# chkconfig mysqld off
# service mysqld start
# scp /ect/my.cnf node2:/etc
# scp /etc/init.d/mysqld node2:/etc/init.d
# service mysqld start
# mysql

测试mysql是否正常使用
mysql> create database mydb;
mysql> grant all privileges on *.* to root@'%' identified by 'asdasd';
mysql> flush privileges;
# service mysqld stop
# service heartbeat start
# ssh node2 'service heartbeat start'
# hb_gui
注意
1. 使用上面这条命令必需在DC上连接与配置,否则会启动失败,查看哪个节点是DC,我们可以使用命令crm_mon
2. 测试完必后必需将每个节点的mysql设为开机关闭,且卸载nfs共享存储
添加组与资源,使用上一节的步骤:

HeartBeat基于CRM使用NFS对MySQL高可用

至此,我们可以从任何一台mysql客户机登陆我们mysql高可用集群了


测试在nfs服务器上登陆mysql集群,看它是否一切正常:
[root@fs ~]# mysql -uroot -h 192.168.100.10 -p
mysql> show databases;
+--------------------+
| Database          |
+--------------------+
| information_schema |
| mydb              |
| mysql              |
| performance_schema |
| test              |
+--------------------+
5 rows in set (0.01 sec)

mysql> use mydb;
Database changed
mysql> create table test1 (
    -> id int not null auto_increment primary key,
    -> name varchar(20) not null
    -> );
Query OK, 0 rows affected (0.11 sec)

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