安装包下载
请从http://dev.mysql.com/downloads/cluster/ 选择GENERIC LINUX
下载mysql-cluster-gpl-7.0.9-linux-i686-glibc23.tar.gz安装包。
此安装为一个管理节点，3个数据节点，3个SQL节点。一共7个节点。其中3个数据节点实现数据存储的冗余，3个SQL节点实现MYSQLD服务的冗余以及负载均衡。
|
节点名称 |
IP地址 |
|
管理节点 |
192.168.72.141 |
|
数据节点1(仅使mysql数据同步作用) |
192.168.72.151 |
|
数据节点2 |
192.168.72.152 |
|
数据节点3 |
192.168.72.153 |
|
SQL节点1 |
192.168.72.158 |
|
SQL节点2 |
192.168.72.159 |
|
SQL节点3 |
192.168.72.161 |
安装步骤
1. 为mysqld增加一个登录用户和组：--7个节点都要做此步骤
shell> groupadd mysql
shell> useradd -g mysql mysql
2.安装管理节点
shell> tar zxvf mysql-cluster-gpl-7.0.9-linux-i686-glibc23.tar.gz
shell> mv mysql-cluster-gpl-7.0.9-linux-i686-glibc23 /opt/mysql
创建MYSQL-CLUSTER目录，并配置CONFIG.INI文件
shell> mkdir /apps/mysql/mysql-cluster
shell> cd /apps/mysql/mysql-cluster
shell> vi config.ini
config.ini内容为下：
[ndbd default]
NoOfReplicas= 3 （数量代表sql节点的副本数量）
DataMemory=500M
indexMemory=300M
[tcp default]
SendBufferMemory=2M
ReceiveBufferMemory=2M
[ndb_mgmd default]
PortNumber=1186
Datadir=/apps/mysql/mysql-cluster
[ndb_mgmd]
Id=1
HostName=192.168.72.141
[ndbd]
Id=2
HostName= 192.168.72.151
DataDir= /apps/mysql/data
[ndbd]
Id=3
HostName= 192.168.72.152
DataDir= /apps/mysql/data
[ndbd]
Id=4
HostName= 192.168.72.153
DataDir= /apps/mysql/data
[mysqld]
Id=5
Hostname=192.168.72.158
[mysqld]
Id=6
Hostname=192.168.72.159
[mysqld]
Id=7
Hostname=192.168.72.161
2. 数据节点安装
分别在192.168.72.151, 192.168.72.152, 192.168.72.153上操作：
shell> tar zxvf mysql-cluster-gpl-7.0.9-linux-i686-glibc23.tar.gz
shell> mv mysql-cluster-gpl-7.0.9-linux-i686-glibc23 /opt/mysql
编辑/etc/my.cnf
内容如下：
[mysqld]
ndbcluster #运行NDB存储引擎
ndb-connectstring=192.168.72.141 #定位管理节点
[mysql_cluster]
ndb-connectstring=192.168.72.141 #定位管理节点
4.SQL节点安装
分别在192.168.72.158, 192.168.72.159, 192.168.72.161上操作：
shell> tar zxvf mysql-cluster-gpl-7.0.9-linux-i686-glibc23.tar.gz
shell> mv mysql-cluster-gpl-7.0.9-linux-i686-glibc23 /opt/mysql
shell> ./scripts/mysql_install_db --user=mysql
编辑/etc/my.cnf文件，添加内容如下。
[mysqld]
ndbcluster #运行NDB存储引擎
ndb-connectstring=192.168.72.141 #定位管理节点
[mysql_cluster]
Ndb-connectstring=192.168.72.141 #定位管理节点
5.开始启动CLUSTER
CLUSTER启动的顺序依次为：管理节点—数据节点—SQL节点
管理节点(192.168.72.141) 启动：
shell> cd /apps/mysql/mysql_cluster
shell> ./bin/ndb_mgmd –f /apps/mysql/mysql-cluster/config.ini --configdir=/apps/mysql/mysql-cluster/ --ndb-nodeid=1
数据节点(72.151,72.152,72.153)启动：
shell> cd /apps/mysql/
shell> ./bin/ndbd –-initial –-ndb-connectstring=192.168.72.141:1186
注意：仅限第一次mysql节点启动使用–-initial，后面再启动不需要此参数
SQL节点(72.158,72.159,72.161)启动：
shell> cd /apps/mysql
shell> ./bin/mysqld_safe –user=mysql &
节点全部启动后，用ndb_mgm 工具的show命令查看集群状态。
登陆管理节点72.141 /apps/mysql/mysql-cluster/bin
下面就说明 mysql cluster的节点全部启动，并且状态正常：
[root@cmgphf1 bin]# ./ndb_mgm -e show
Connected to Management Server at: localhost:1186
Cluster Configuration
---------------------
[ndbd(NDB)] 3 node(s)
id=2 @192.168.72.151 (mysql-5.1.39 ndb-7.0.9, Nodegroup: 0)
id=3 @192.168.72.152 (mysql-5.1.39 ndb-7.0.9, Nodegroup: 0)
id=4 @192.168.72.153 (mysql-5.1.39 ndb-7.0.9, Nodegroup: 0, Master)
[ndb_mgmd(MGM)] 1 node(s)
id=1 @192.168.72.141 (mysql-5.1.39 ndb-7.0.9)
[mysqld(API)] 3 node(s)
id=5 @192.168.72.158 (mysql-5.1.39 ndb-7.0.9)
id=6 @192.168.72.159 (mysql-5.1.39 ndb-7.0.9)
id=7 @192.168.72.161 (mysql-5.1.39 ndb-7.0.9)
测试过程
数据同步测试
1. 在72.158的mysql上建db和table
[root@72_158 data]# mysql -uroot -p --socket=/tmp/mysql.sock
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 4 to server version: 5.1.39-ndb-7.0.9-cluster-gpl
Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
mysql> create database ctest;
Query OK, 1 row affected (0.26 sec)
mysql> use ctest;
Database changed
mysql> create table t1(id int not null primary key) engine=ndb;
Query OK, 0 rows affected (0.63 sec)
mysql> insert into t1 values(1);
Query OK, 1 row affected (0.07 sec)
mysql> insert into t1 values(2);
Query OK, 1 row affected (0.01 sec)
mysql> flush tables;
Query OK, 0 rows affected (0.01 sec)
2. 登陆其他sql节点，进行检查表数据是否同步
[root@72_159 ~]# mysql -uroot -p --socket=/tmp/mysql.sock
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3 to server version: 5.1.39-ndb-7.0.9-cluster-gpl
Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| ctest |
| mysql |
| test | |
+--------------------+
6 rows in set (0.00 sec)
mysql> use ctest;
Database changed
mysql> select * from t1;
+----+
| id |
+----+
| 1 |
| 2 |
+----+
2 rows in set (0.01 sec)
节点重启测试
1. 检查各节点的状态，对红色部分进行主机重启
[root@cmgphf1 bin]# ./ndb_mgm -e show
Connected to Management Server at: localhost:1186
Cluster Configuration
---------------------
[ndbd(NDB)] 3 node(s)
id=2 @192.168.72.151 (mysql-5.1.39 ndb-7.0.9, Nodegroup: 0)
id=3 @192.168.72.152 (mysql-5.1.39 ndb-7.0.9, Nodegroup: 0)
id=4 @192.168.72.153 (mysql-5.1.39 ndb-7.0.9, Nodegroup: 0, Master)
[ndb_mgmd(MGM)] 1 node(s)
id=1 @192.168.72.141 (mysql-5.1.39 ndb-7.0.9)
[mysqld(API)] 3 node(s)
id=5 @192.168.72.158 (mysql-5.1.39 ndb-7.0.9)
id=6 @192.168.72.159 (mysql-5.1.39 ndb-7.0.9)
id=7 @192.168.72.161 (mysql-5.1.39 ndb-7.0.9)
2. 对72.152,72.153,72.158,72.159 节点重启动，只保留一个NDB和SQL节点，来测试数据库能否正常使用：
[root@cmgphf1 bin]# ./ndb_mgm -e show
Connected to Management Server at: localhost:1186
Cluster Configuration
---------------------
[ndbd(NDB)] 3 node(s)
id=2 @192.168.72.151 (mysql-5.1.39 ndb-7.0.9, Nodegroup: 0, Master) 已经漂移
id=3 (not connected, accepting connect from 192.168.72.152)
id=4 (not connected, accepting connect from 192.168.72.153)
[ndb_mgmd(MGM)] 1 node(s)
id=1 @192.168.72.141 (mysql-5.1.39 ndb-7.0.9)
[mysqld(API)] 3 node(s)
id=5 (not connected, accepting connect from 192.168.72.158)
id=6 (not connected, accepting connect from 192.168.72.159)
id=7 @192.168.72.161 (mysql-5.1.39 ndb-7.0.9)
3. 登陆72.161，进行数据正常查询，说明已经具备了单点故障：
[root@72_161 mysql]# mysql -uroot -p --socket=/tmp/mysql.sock
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 8 to server version: 5.1.39-ndb-7.0.9-cluster-gpl
mysql> use ctest;
Database changed
mysql> show tables;
+-----------------+
| Tables_in_ctest |
+-----------------+
| t1 |
+-----------------+
1 row in set (0.00 sec)
mysql> select * from t1;
+----+
| id |
+----+
| 2 |
| 1 |
+----+
2 rows in set (0.00 sec)
4. 在72.161 sql节点上删除表里一条记录
mysql> delete from t1 limit 1;
Query OK, 1 row affected (0.02 sec)
mysql> select * from t1;
+----+
| id |
+----+
| 1 |
+----+
1 row in set (0.01 sec)
5. 对停掉的节点进行启动，并且检查其它sql节点的t1表数据是否同步
a. 检查mysql cluster状态：
[root@72_141 bin]# ./ndb_mgm -e show
Connected to Management Server at: localhost:1186
Cluster Configuration
---------------------
[ndbd(NDB)] 3 node(s)
id=2 @192.168.72.151 (mysql-5.1.39 ndb-7.0.9, Nodegroup: 0, Master)
id=3 @192.168.72.152 (mysql-5.1.39 ndb-7.0.9, Nodegroup: 0)
id=4 @192.168.72.153 (mysql-5.1.39 ndb-7.0.9, Nodegroup: 0)
[ndb_mgmd(MGM)] 1 node(s)
id=1 @192.168.72.141 (mysql-5.1.39 ndb-7.0.9)
[mysqld(API)] 3 node(s)
id=5 @192.168.72.158 (mysql-5.1.39 ndb-7.0.9)
id=6 @192.168.72.159 (mysql-5.1.39 ndb-7.0.9)
id=7 @192.168.72.161 (mysql-5.1.39 ndb-7.0.9)
b. 检查sql节点上的t1表数据
[root@72_158 mysql]# mysql -uroot -p --socket=/tmp/mysql.sock
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3 to server version: 5.1.39-ndb-7.0.9-cluster-gpl
Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
mysql> use ctest;
Database changed
mysql> select * from t1;
+----+
| id |
+----+
| 1 |
+----+
1 row in set (0.00 sec)