mysql-cluster(2)——部署

mysql-cluster系列：

1. mysql-cluster(1)——简介
2. mysql-cluster(2)——部署
3. mysql-cluster(3)——集群管理和维护
4. mysql-cluster(4)——创建内存表和磁盘表
5. mysql-cluster(5)——jdbc
6. mysql-cluster(6)——配置详解
7. mysql-cluster(7)——基准测试
8. mysql-cluster(8)——最佳实践
9. mysql-cluster(9)——NDB和InnoDB区别
10. mysql-cluster(10)——注意事项

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本文目录：

1 准备工作

操作系统：redhat7(x64)
版本：mysql-cluster-gpl-7.4.11-linux-glibc2.5-x86_64.tar.gz（
http://cdn.mysql.com//Downloads/MySQL-Cluster-7.4/mysql-cluster-gpl-7.4.11-linux-glibc2.5-x86_64.tar.gz）
management节点：10.5.11.85
data节点：10.5.11.86
sql节点：10.5.11.87

2 部署

需要部署3类节点：MGM节点（管理节点）、NDB节点（数据节点）、API节点（SQL节点）。
3类节点上部署的应用均相同，但需要配置的文件不同。

2.1 新建linux用户

groupadd admin
useradd -d /home/admin -g admin-s /bin/bash admin
chown -R admin:admin ./mysql-cluster-gpl-7.4.11-linux-glibc2.5-x86_64.tar.gz
su admin

2.2 解压安装包

tar zxvf mysql-cluster-gpl-7.4.11-linux-glibc2.5-x86_64.tar.gz
mv -f mysql-cluster-gpl-7.4.11-linux-glibc2.5-x86_64 /usr/local
cd /usr/local
mv -f mysql-cluster-gpl-7.4.11-linux-glibc2.5-x86_64 mysql
cd mysql

2.3 NDB节点和API节点配置my.cnf

cp ./support-files/my-default.cnf /etc/my.cnf
vim /etc/my.cnf

[MYSQLD]
user=admin
character_set_server=utf8
ndbcluster
ndb-connectstring=10.5.11.85
default-storage-engine=ndbcluster
datadir=/opt/mysql/data
basedir=/usr/local/mysql
[MYSQL_CLUSTER]
ndb-connectstring=10.5.11.85

2.4 指定用户权限和数据位置

./scripts/mysql_install_db –user=admin –datadir=/opt/mysql/data –basedir=/usr/local/mysql

2.5 NDB节点配置mysqld

cp ./support-files/mysql.server /etc/init.d/mysqld
chmod 755 /etc/init.d/mysqld

2.6 MGM节点配置config.ini

touch /opt/mysql/data/config.ini
vim /opt/mysql/data/config.ini

[NDBD DEFAULT]
NoOfReplicas=1               #每个数据节点的镜像数量，通常最低设置为2，否则就没有意义了，这里是方便后面测试。
DataMemory=64M               #每个数据节点中给数据分配的内存
IndexMemory=16M              #每个数据节点中给索引分配的内存

#管理节点
[NDB_MGMD]
nodeid=1
hostname=10.5.11.85          #管理节点ip
datadir=/opt/mysql/data      #管理节点数据目录,存放相关日志，以及pid文件

#第一个 ndbd 节点:
[NDBD]
nodeid=2
hostname=10.5.11.86          #数据节点ip地址
datadir=/opt/mysql/data   

# SQL node options:
[MySQLD]
nodeid=3
hostname=10.5.11.87          #SQL节点ip地址
[MySQLD]           #这里保留了一个空节点。否则停止NDB会报错：No free node id found for ndbd(NDB).

2.7 mysql命令快捷方式生效

echo "export PATH=$PATH:/usr/local/mysql/bin" >> /home/admin/.bash_profile
source /home/admin/.bash_profile

3 卸载

rm -rf /usr/local/mysql
rm -rf /etc/my.cnf
rm -rf /opt/mysql/data
rm -rf /etc/init.d/mysqld

vim /home/admin/.bash_profile
修改PATH，去除:/usr/local/mysql/bin
source /home/admin/.bash_profile

4 启动示例

4.1 启动management-node

[[email protected] mysql]# ndb_mgmd -f /opt/mysql/data/config.ini
MySQL Cluster Management Server mysql-5.6.29 ndb-7.4.11
[[email protected] mysql]#

查看是否有相关连接：

[[email protected] mysql]# netstat -ntlp | grep 1186
tcp 0 0 0.0.0.0:1186 0.0.0.0:* LISTEN 6661/ndb_mgmd
[[email protected] mysql]#

查看是否有相关进程：

[[email protected] mysql]# ps -ef | grep ndb_mgmd | grep -v grep
root 6661 1 0 16:00 ? 00:00:00 ndb_mgmd -f /opt/mysql/data/config.ini
[root@silkworm-test-kafka02 mysql]#

4.2 启动data-node

[[email protected] mysql]# ndbd –initial
2016-06-29 16:02:40 [ndbd] INFO – Angel connected to ‘10.5.11.85:1186’
2016-06-29 16:02:40 [ndbd] INFO – Angel allocated nodeid: 2
[[email protected] mysql]#

查看是否有相关进程：

[[email protected] mysql]# ps -ef | grep ndbd | grep -v grep
root 3334 1 0 16:02 ? 00:00:00 ndbd –initial
root 3335 3334 0 16:02 ? 00:00:01 ndbd –initial

ndbd进程是使用NDB存储引擎处理表中数据的进程。通过该进程，存储节点能够实现分布式事务管理，节点恢复，在线备份相关任务。

4.3 启动sql-node

[[email protected] mysql]# /etc/init.d/mysqld start
Starting MySQL.. [ OK ]
[[email protected] mysql]#

4.4 验证集群

4.4.1 节点全部启动成功后。

在management-node使用ndb_mgm工具的show命令查看集群状态：

[[email protected] mysql]# ndb_mgm
– NDB Cluster – Management Client –
ndb_mgm> show

Connected to Management Server at: localhost:1186
Cluster Configuration
---------------------
[ndbd(NDB)]    1 node(s)
id=2    @10.45.11.86  (mysql-5.6.29 ndb-7.4.11, Nodegroup: 0, *)

[ndb_mgmd(MGM)]    1 node(s)
id=1    @10.45.11.85  (mysql-5.6.29 ndb-7.4.11)

[mysqld(API)]    2 node(s)
id=3    @10.45.11.87  (mysql-5.6.29 ndb-7.4.11)
id=4 (not connected, accepting connect from any host)

ndb_mgm>

4.4.2 数据同步检查。

在sql-node上进行数据操作。红色部分为标注。

（1）10.5.11.87创建数据库、表，并添加数据
[[email protected] mysql]# mysql -u root -p

Enter password: #默认管理员密码为空
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 7
Server version: 5.6.29-ndb-7.4.11-cluster-gpl MySQL Cluster Community Server (GPL)

Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> show databases;

+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| ndbinfo            |
| performance_schema |
| test               |
+--------------------+
5 rows in set (0.00 sec)

mysql> create database test2;

Query OK, 1 row affected (0.04 sec)

mysql> use test2

Database changed

mysql> show tables;

Empty set (0.00 sec)

mysql> create table abc (id int) engine=ndbcluster；#指定数据库表的引擎为NDB，否则同步失败

Query OK, 0 rows affected (0.07 sec)

mysql> insert into abc () values (1);

Query OK, 1 row affected (0.01 sec)

mysql> select * from abc;

+------+
| id   |
+------+
|    1 |
+------+
1 row in set (0.00 sec)

mysql> show tables;

+-----------------+
| Tables_in_test2 |
+-----------------+
| abc             |
+-----------------+
1 row in set (0.00 sec)

mysql>

（2）10.5.11.86查询数据
[[email protected] mysql]# mysql -u root -p

Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.6.29-ndb-7.4.11-cluster-gpl MySQL Cluster Community Server (GPL)

Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> select * from abc;

ERROR 1046 (3D000): No database selected

mysql> quit

Bye

[[email protected] mysql]# mysql -u root -p

Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.6.29-ndb-7.4.11-cluster-gpl MySQL Cluster Community Server (GPL)

Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> use test2;

Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed

mysql> select * from abc;

+------+
| id   |
+------+
|    1 |
+------+
1 rows in set (0.00 sec)

mysql>

（3）10.5.11.86添加新数据

mysql> insert into abc () values (2);

Query OK, 1 row affected (0.00 sec)

mysql> select * from abc;

+------+
| id   |
+------+
|    1 |
|    2 |
+------+
2 rows in set (0.00 sec)

mysql>

（4）10.5.11.87查询数据

mysql> select * from abc;

+------+
| id   |
+------+
|    2 |
|    1 |
+------+
2 rows in set (0.00 sec)