搭建MySQL-Cluster集群架构
官方提供的MySQL-Cluster相关软件包已集成数据库服务端/客户端程序,因此可直接用来替换普通的MySQL服务端/客户端程序。如果已安
实验需求:部署MySQL集群,减少数据库单点故障。
实验方案:准备5台服务器,mgmd(192.168.100.1)作为管理节点,sqlA(192.168.100.2)和sqlB(192.168.100.3)作为SQL节点,ndbA(192.168.100.4)和ndbB(192.168.100.5)作为数据节点,这5个节点构成MySQL Cluster体系
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实施过程:
一.公共配置
1.所有节点上安装MySQL集群软件
1.1所有节点卸载冲突包
官方提供的MySQL-Cluster相关软件包已集成数据库服务端/客户端程序,因此可直接用来替换普通的MySQL服务端/客户端程序。如果已安装有普通版的mysql-server、mysql、MySQL-server、MySQL-client包,请先将其卸载(若没有则忽略):
# service mysql stop
# chkconfig mysql off
# rpm -e --nodeps MySQL-server MySQL-client MySQL-shared MySQL-embedded MySQL-test MySQL-devel
1.2清理残余配置文件
mv /etc/my.cnf /etc/my.cnf.bak
useradd mysql
1.3 所有节点安装MySQL-Cluster相关软件包
# tar xvf MySQL-Cluster-gpl-7.3.3-1.el6.x86_64.rpm-bundle.tar
MySQL-Cluster-shared-gpl-7.3.3-1.el6.x86_64.rpm
MySQL-Cluster-shared-compat-gpl-7.3.3-1.el6.x86_64.rpm
MySQL-Cluster-server-gpl-7.3.3-1.el6.x86_64.rpm
MySQL-Cluster-client-gpl-7.3.3-1.el6.x86_64.rpm
MySQL-Cluster-test-gpl-7.3.3-1.el6.x86_64.rpm
MySQL-Cluster-devel-gpl-7.3.3-1.el6.x86_64.rpm
MySQL-Cluster-embedded-gpl-7.3.3-1.el6.x86_64.rpm
rpm -Uvh MySQL-Cluster-*.rpm
2.在SQL节点(sqlA、sqlB)服务器上,修改MySQL数据库的root密码
3.SQL节点添加授权数据库用户,方便客户端访问
mysql>grant all on*.*to'root'@'192.168.100.%'identifiedby'123456';
二.配置管理节点 mgmd (192.168.100.1)
1.创建工作文件夹
# mkdir -p /var/log/mysql-cluster
2.创建配置文件
[ndbd default]:为所有的数据节点指定默认配置。
[ndbd]:指定某一个数据节点的配置。
[ndb_mgmd default]:为所有的管理节点指定默认配置。
[ndb_mgmd]:指定某一个管理节点的配置。
[mysqld default]:为所有的SQL节点指定默认配置。
[mysqld]:指定某一个SQL节点的配置。
# vim /etc/config.ini
[ndbd default]
NoOfReplicas=2//保留2份数据拷贝
DataMemory=80M //数据缓存大小
IndexMemory=18M //索引缓存大小
[ndb_mgmd]
nodeid=1//第1个管理节点的ID号
hostname=192.168.100.1//此管理节点的地址
datadir=/var/log/mysql-cluster //此管理节点的工作目录
[mysqld]
nodeid=2//第1个SQL节点的ID号
hostname=192.168.100.2 //第1个SQL节点的地址
[mysqld]
nodeid=3//第2个SQL节点的ID号
hostname=192.168.100.3 //第2个SQL节点的地址
[ndbd]
nodeid=4//第1个数据节点的ID号
hostname=192.168.100.4 //第1个数据节点的地址
datadir=/mysql-cluster/data //第1个数据节点的工作目录,,需创建
[ndbd]
nodeid=5//第2个数据节点的ID号
hostname=192.168.100.5//第2个数据节点的地址
datadir=/mysql-cluster/data //第2个数据节点的工作目录,需创建
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