MySQL集群安装与配置
时间:2014-06-24 20:21 来源:linux.it.net.cn 作者:IT网
MySQL Cluster 是 MySQL 适合于分布式计算环境的高实用、高冗余版本。它采用了NDB Cluster 存储引擎,允许在1个 Cluster 中运行多个MySQL服务器。MySQL Cluster 能够使用多种故障切换和负载平衡选项配置NDB存储引擎,但在 Cluster 级别上的存储引擎上做这个最简单。下面我们简单介绍MySQL Cluster如何安装与配置。
基本设定
管理(MGM)节点:192.168.0.111
MySQL服务器(SQL)节点:192.168.0.110
数据(NDBD)节点"A":192.168.0.112
数据(NDBD)节点"B":192.168.0.113
一、mysql集群安装
mysql的集群安装可以有三种方式,一是直接下载二进制使用,二是使用rpm安装,三是源码编译。我们这里使用第一种安装。
1、每个节点做相同的操作
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cd /tmp
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wget http://cdn.mysql.com/Downloads/MySQL-Cluster-7.2/mysql-cluster-gpl-7.2.8-linux2.6-i686.tar.gz
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tar xzf mysql-cluster-gpl-7.2.8-linux2.6-i686.tar.gz
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mv mysql-cluster-gpl-7.2.8-linux2.6-i686 /usr/local/mysql
注意:这里下载的是32位的二进制包,如果你的系统是64位,需要下载64位的包。
2、存储节点和SQL节点安装
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groupadd mysql
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useradd -g mysql mysql
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/usr/local/mysql/scripts/mysql_install_db --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --user=mysql
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chown -R root /usr/local/mysql
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chown -R mysql /usr/local/mysql/data
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chgrp -R mysql /usr/local/mysql
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cp /usr/local/mysql/support-files/my-medium.cnf /etc/my.cnf
二、节点配置
1、配置存储节点和SQL节点
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vi /etc/my.cnf
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类似于:
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# Options for mysqld process:
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[MYSQLD]
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ndbcluster # run NDB engine
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ndb-connectstring=198.168.0.111 # location of MGM node
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# Options for ndbd process:
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[MYSQL_CLUSTER]
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ndb-connectstring=198.168.0.111 # location of MGM node
2、配置管理节点
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mkdir /var/lib/mysql-cluster
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cd /var/lib/mysql-cluster
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vi config.ini
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config.ini文件应类似于:
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# Options affecting ndbd processes on all data nodes:
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[NDBD DEFAULT]
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NoOfReplicas=2 # Number of replicas
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DataMemory=80M # How much memory to allocate for data storage
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IndexMemory=18M # How much memory to allocate for index storage
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# For DataMemory and IndexMemory, we have used the
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# default values. Since the "world" database takes up
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# only about 500KB, this should be more than enough for
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# this example Cluster setup.
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# TCP/IP options:
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[TCP DEFAULT]
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portnumber=2202 # This the default; however, you can use any
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# port that is free for all the hosts in cluster
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# Note: It is recommended beginning with MySQL 5.0 that
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# you do not specify the portnumber at all and simply allow
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# the default value to be used instead
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# Management process options:
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[NDB_MGMD]
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hostname=198.168.0.111 # Hostname or IP address of MGM node
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datadir=/var/lib/mysql-cluster # Directory for MGM node logfiles
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# Options for data node "A":
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[NDBD]
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# (one [NDBD] section per data node)
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hostname=198.168.0.112 # Hostname or IP address
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datadir=/usr/local/mysql/data # Directory for this data node's datafiles
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# Options for data node "B":
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[NDBD]
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hostname=198.168.0.113 # Hostname or IP address
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datadir=/usr/local/mysql/data # Directory for this data node's datafiles
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# SQL node options:
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[MYSQLD]
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hostname=198.168.0.110 # Hostname or IP address
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# (additional mysqld connections can be
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# specified for this node for various
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# purposes such as running ndb_restore)
三、首次启动节点
1、启动管理节点
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/usr/local/mysql/bin/ndb_mgmd --configdir=/var/lib/mysql-cluster -f /var/lib/mysql-cluster/config.ini
2、启动数据节点
首次启动需要--initial参数初始化,下一次启动就不需要了。
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/usr/local/mysql/bin/ndbd --initial
3、启动SQL节点
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/usr/local/mysql/bin/mysqld_safe &
4、检查状态
如果一切正常,执行命令 /usr/local/mysql/bin/ndb_mgm -e show应该会输出类似信息:
[root@localhost mysql-cluster]# /usr/local/mysql/bin/ndb_mgm -e show
Connected to Management Server at: localhost:1186
Cluster Configuration
---------------------
[ndbd(NDB)] 2 node(s)
id=2 @192.168.0.112 (mysql-5.5.27 ndb-7.2.8, Nodegroup: 0, Master)
id=3 @192.168.0.113 (mysql-5.5.27 ndb-7.2.8, Nodegroup: 0)
[ndb_mgmd(MGM)] 1 node(s)
id=1 @192.168.0.111 (mysql-5.5.27 ndb-7.2.8)
[mysqld(API)] 1 node(s)
id=4 @192.168.0.110 (mysql-5.5.27 ndb-7.2.8)
四、测试服务是否正常
在SQL节点上执行如下数据库操作:
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/usr/local/mysql/bin/mysql -uroot -p
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mysql> create database clusterdb;use clusterdb;
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mysql> create table simples (id int not null primary key) engine=ndb;
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mysql> insert into simples values (1),(2),(3),(4);
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mysql> select * from simples;
如果出现:
+----+
| id |
+----+
| 1 |
| 2 |
| 4 |
| 3 |
+----+
则表示工作正常。
五、安全关闭和重启
1、关闭mysql集群,可在管理节点在执行如下命令:
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/usr/local/mysql/bin/ndb_mgm -e shutdown
2、重启管理节点
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/usr/local/mysql/bin/ndb_mgmd --configdir=/var/lib/mysql-cluster -f /var/lib/mysql-cluster/config.ini
3、重启数据节点
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/usr/local/mysql/bin/ndbd
(责任编辑:IT)
MySQL Cluster 是 MySQL 适合于分布式计算环境的高实用、高冗余版本。它采用了NDB Cluster 存储引擎,允许在1个 Cluster 中运行多个MySQL服务器。MySQL Cluster 能够使用多种故障切换和负载平衡选项配置NDB存储引擎,但在 Cluster 级别上的存储引擎上做这个最简单。下面我们简单介绍MySQL Cluster如何安装与配置。 一、mysql集群安装
mysql的集群安装可以有三种方式,一是直接下载二进制使用,二是使用rpm安装,三是源码编译。我们这里使用第一种安装。
注意:这里下载的是32位的二进制包,如果你的系统是64位,需要下载64位的包。
二、节点配置1、配置存储节点和SQL节点
2、配置管理节点
三、首次启动节点1、启动管理节点
2、启动数据节点
3、启动SQL节点
4、检查状态
[root@localhost mysql-cluster]# /usr/local/mysql/bin/ndb_mgm -e show
[ndb_mgmd(MGM)] 1 node(s)
[mysqld(API)] 1 node(s) 四、测试服务是否正常在SQL节点上执行如下数据库操作:
如果出现: 五、安全关闭和重启1、关闭mysql集群,可在管理节点在执行如下命令:
2、重启管理节点
3、重启数据节点
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