Mysql数据库集群简单配置

环境：

192.168.5.155      mysql-mgm-node

192.168.5.156      mysql-sql-node1 mysql-data-node1

192.168.5.157      mysql-sql-node2 mysql-data-node2

下载cluster软件并上传至各服务器。

1、安装MGM节点：

创建安装目录

mkdir -p /usr/local/mysql/bin

mkdir -p /usr/local/mysql/ndbdata

添加执行文件路径

vi ~/.bash_profile

PATH=$PATH:$HOME/bin:/usr/local/mysql/bin

拷贝执行文件

cp bin/ndb_mgmd /usr/local/mysql/bin

cp bin/ndb_mgm /usr/local/mysql/bin

创建日志文件存储目录

mkdir /var/log/mysql-cluster

创建配置文件目录及文件

mkdir /usr/local/mysql/cluster-conf

vi /usr/local/mysql/cluster-conf/config.ini

编辑配置文件：

[ndbd default]

NoOfReplicas=2

DataMemory=2048M

IndexMemory=512M

[ndb_mgmd]

id=1

hostname=192.168.5.155

DataDir=/var/log/mysql-cluster

[ndbd]

id=11

HostName=192.168.5.156

DataDir=/usr/local/mysql/ndbdata

[ndbd]

id=12

HostName=192.168.5.157

DataDir=/usr/local/mysql/ndbdata

[mysqld]

id=21

HostName=192.168.5.156

[mysqld]

id=22

HostName=192.168.5.157

[mysqld]

id=23

2、安装数据节点及SQL节点：

yum install libaio

#groupadd mysql

#useradd mysql -g mysql

#mv mysql-cluster-gpl-7.2.9-linux2.6-x86_64.tar.gz /usr/local/

#cd /usr/local/

#tar zxvf mysql-cluster-gpl-7.2.9-linux2.6-x86_64.tar.gz

#rm -f mysql-cluster-gpl-7.2.9-linux2.6-x86_64.tar.gz

#mv mysql-cluster-gpl-7.2.9-linux2.6-x86_64 mysql

#chown -R mysql:mysql mysql

#cd mysql

#scripts/mysql_install_db --user=mysql

#cp support-files/my-medium.cnf /etc/my.cnf

#cp support-files/mysql.server /etc/init.d/mysqld

#vi /etc/my.cnf

添加：

datadir=/usr/local/mysql/data/      

ndbcluster

ndb-connectstring=192.168.5.155

[ndbd]

connect-string=192.168.5.155

[mysql_cluster]

ndb-connectstring=192.168.5.155

[ndb_mgm] 

connect-string=192.168.5.155

[ndb_mgmd]

config-file=/var/lib/mysql-cluster/config.ini

3、启动相关服务

（1）启动管理节点相关服务:

#/usr/local/mysql/bin/ndb_mgmd -f /var/lib/mysql-cluster/config.ini

#netstat -lntpu

tcp        0      0 0.0.0.0:1186            0.0.0.0:*                

LISTEN   22907/ndb_mgmd

（2）启动数据节点相关服务:

#/usr/local/mysql/bin/ndbd --initial  （初次启动需要加 --initial参数）

#netstat -lntpu

mkdir /usr/local/mysql/ndbdata

chmod 755 /usr/local/mysql/ndbdata

#service mysqld start

4、功能测试：

[root@localhost bin]# ./ndb_mgm

-- NDB Cluster -- Management Client --

ndb_mgm> show 

Connected to Management Server at: localhost:1186

Cluster Configuration

---------------------

[ndbd(NDB)]     2 node(s)

id=11   @192.168.5.156  (mysql-5.5.28 ndb-7.2.9, Nodegroup: 0)

id=12   @192.168.5.157  (mysql-5.5.28 ndb-7.2.9, Nodegroup: 0, Master)

[ndb_mgmd(MGM)] 1 node(s)

id=1    @192.168.5.155  (mysql-5.5.28 ndb-7.2.9)

[mysqld(API)]   3 node(s)

id=21   @192.168.5.156  (mysql-5.5.28 ndb-7.2.9)

id=22   @192.168.5.157  (mysql-5.5.28 ndb-7.2.9)

id=23 (not connected, accepting connect from any host)

可关闭master，看master状态是否转移到另外一台；在A关闭状态下，修改B数据库，启动A，看数据是否同步。