Home Database Mysql Tutorial MYSQLcluster分布式筹建笔记

MYSQLcluster分布式筹建笔记

Jun 07, 2016 pm 04:15 PM
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MYSQLcluster分布式搭建笔记 一 、注意事项 ? 数据节点 和 sql 节点是否能链接管理节点 ? 注意端口号 telnet 关闭防火墙: Service iptables stop; Sql 节点启动时 注意权限 ? 二、软件安装: (一)管理节点 MGM 配置管理节点 首先在合适的位置,创建一个管

MYSQLcluster分布式搭建笔记

、注意事项

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数据节点 sql节点是否能链接管理节点? 注意端口号 telnet

关闭防火墙:Service iptables stop;

Sql 节点启动时注意权限

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二、软件安装:

(一)管理节点MGM

配置管理节点

首先在合适的位置,创建一个管理节点的配置文件,步骤如下:

[root@localhost ~]# mkdir /var/lib/mysql-cluster

[root@localhost ~]# cd /var/lib/mysql-cluster

[root@localhost mysql-cluster]# vi config.ini

配置文件config.ini内容如下:

?[ndbd default]

NoOfReplicas=1

DataMemory=80M

IndexMemory=18M

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[ndb_mgmd]

hostname=192.168.2.253

datadir=/var/lib/mysql-cluster

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[ndbd]

hostname=192.168.2.253

datadir=/usr/local/mysql/data

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[mysqld]

hostname=192.168.2.254

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安装管理节点,不需要mysqld二进制文件,只需要MySQL Cluster服务端程序(ndb_mgmd)和监听客户端程序(ndb_mgm)。这两个文件都在下载的MySQL-cluster文件解压后的bin文件夹中。执行如下步骤,在集群的管理节点上安装ndb_mgmd ndb_mgm

1、改变地址到/var/tmp目录下,解压MySQL-Cluster压缩文件,取出ndb_mgmndb_mgmd复制到/usr/local/bin 目录下。

[root@localhost ~]# cd /usr/local/

[root@localhost local]# tar –xzvf mysql-cluster-gpl-7.1.13-linux-i686-glibc23.tar.gz

[root@localhost local]# cd mysql-cluster-gpl-7.1.13-linux-i686-glibc23

[root@localhost mysql-cluster-gpl-7.1.13-linux-i686-glibc23]# cp bin/ndb_mgm* /usr/local/bin

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2、改变路径为拷贝到的目录下,并确保这两个文件可执行。

[root@localhost tm local p]# cd /usr/local/bin

[root@localhost bin]# chmod +x ndb_mgm*

3、在/usr/local下创建mysql文件夹。

[root@localhost ~]# cd /usr/local

[root@localhost local]# mkdir mysql

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(二)、数据节点NDBDSQL节点

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在每一个SQl点中的/etc目录下找到my.cnf文件,并做如下配置:

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[client]

socket=/usr/local/mysql/sock/mysql.sock

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[mysqld]

ndbcluster

datadir=/usr/local/mysql

socket=/usr/local/mysql/sock/mysql.sock

ndb-connectstring=192.168.56.88

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[mysql_cluster]

ndb-connectstring=192.168.56.88?

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在每一个数据节点中的/etc目录下找到my.cnf文件,并做如下配置:

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在每一个数据节点NDBDSQL节点的机器上,用root用户执行下面的步骤。

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1、检查/etc/passwd /etc/group 文件,是否存在mysql组和mysql用户,如果没有,用下面的命令创建一个mysql组,并在改组中添加mysql用户。

[root@localhost ~]# groupadd mysql

[root@localhost ~]# useradd –g mysql mysql

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2、改变文件夹位置到mysql压缩包的存放位置,解压文件,准备安装,步骤如下:

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[root@localhost ~]# cd /usr/local/

?[root@localhost local]# tar –xzvf mysql-cluster-gpl-7.1.13-linux-i686-glibc23.tar.gz

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3、改变位置到local文件夹,改变mysql解压后的文件夹名称为mysql,然后执行提供的脚本,创建系统数据库。

?[root@localhost local]# mv mysql-cluster-gpl-7.1.13-linux-i686-glibc23/ mysql/

[root@localhost local]# cd mysql

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[root@localhost mysql]# ?mkdir sock

[root@localhost mysql]# scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql ?--socket=/usr/local/mysql/sock/mysql.sock

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4、为MySQL服务及数据目录设置必要的服务。

[root@localhost mysql]# chown -R root .

[root@localhost mysql]# chown -R mysql.mysql /usr/local/mysql/data

[root@localhost mysql]# chown -R mysql.mysql /usr/local/mysql/sock

[root@localhost mysql]#chgrp -R mysql .

[root@localhost mysql]# ls -l

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5、复制MySQL的启动脚本到如下的文件夹,确保可以执行。并设置为当系统启动时,同时启动MySQL

[root@localhost mysql]# cp support-files/mysql.server /etc/rc.d/init.d/

[root@localhost mysql]# chmod +x /etc/rc.d/init.d/mysql.server

[root@localhost mysql]# chkconfig --add mysql.server

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三、Cluster环境启动

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注意启动顺序:首先是管理节点,然后是NDBD节点,最后是SQL节点。

1[MGM]

[root@localhost ~]#ndb_mgmd -f /var/lib/mysql-cluster/config.ini

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2[NDBD]

首次启动,则需要添加--initial参数,以便进行NDB节点的初始化工作。在以后的启动过程中,则是不能添加该参数的,否则ndbd程序会清除在之前建立的所有用于恢复的数据文件和日志文件。

[root@localhost ~]#/usr/local/mysql/bin/ndbd --initial

如果不是首次启动,则执行下面的命令。

[root@localhost ~]# /usr/local/mysql/bin/ndbd

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3[SQLD]

?/usr/local/mysql/bin/mysqld_safe --user=mysql &

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有可能出现上图问题,是系统数据库创建问题,只需再次创建系统数据库,方法如下:

[root@localhost mysql]# scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql

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/usr/local/mysql/scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql? --socket=/usr/local/mysql/sock/mysql.sock

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/usr/local/mysql/bin/mysql_upgrade? --user=mysql

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netstat -ntulpa

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再次启动

/usr/local/mysql/bin/mysqld_safe --user=mysql &

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查看管理节点,启动成功:

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?/etc/rc.d/init.d/mysqld stop

/etc/rc.d/init.d/mysqld start

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