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HomeDatabaseMysql TutorialMySQL 双机热备份安装和配置[组图]_MySQL

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    在linux服务器lvs负载均衡、双机热备应用中经常用到mysql双机热备,安装和配置过程如下:

一、 安装MYSQL

# cp mysql-standard-4.1.9-pc-linux-gnu-i686.tar.gz /usr/local/

# tar zxvf mysql-standard-4.1.9-pc-linux-gnu-i686.tar.gz

# mv mysql-standard-4.1.9-pc-linux-gnu-i686 mysql

# cd mysql

# more INSTALL-BINARY

MySQL 双机热备份安装和配置[组图]_MySQL

查看安装文档,注意以红色框内为主。

# groupadd mysql (建立mysql组)

# useradd -g mysql mysql (建立mysql用户并将其用户加入该组)

# scripts/mysql_install_db --user=mysql (以mysql用户身份执行数据库初始化安装脚本)

# chown -R root . (归属root权限为当前目录)

# chown -R mysql data (归属mysql权限为data目录)

# chgrp -R mysql . (改变mysql档案/目录的使用者与群组拥有人为当前目录)

# bin/mysqld_safe --user=mysql & (以mysql用户身份后台启动mysql数据库进程)

之后我们就可以启动mysql数据库,如图:

MySQL 双机热备份安装和配置[组图]_MySQL

 

显示为上述图,表示安装正确。

为了使数据库更加安全,我们来设置数据库密码。

如在下次启动服务器时能自动启动mysql数据库进程,我们还需写入/etc/rc.d/rc.local文件里

echo “/usr/local/mysql/bin/mysqld_safe --user=mysql &” >;>; /etc/rc.d/rc.local
  
二、配置MYSQL双机热备

传统模式都是采用mysql双机互备,至于双机热备我搜索了大量的精华帖子都没有发现安装配置文档。故我的一个想法产生了:当建立新的数据库时,默认会建立到/usr/local/mysql/data这里,如果能改掉默认配置文件my.conf,建立数据库能指定在一个目录上,如我建立在盘柜上,这样就能实现双机热备功能。

最起初困惑我的是如何更改配置文件my.conf,我咨询了很多朋友,但都没能成功。后听yddll朋友一席言,“把阵列的文件系统挂在/usr/local/mysql/data下”,顿时茅塞顿开,使我如拨云雾而见青天。原理都清楚了,下面开始实施。

# fdisk /dev/sdb

# reboot

# mkfs.ext3 /dev/sdb1(把阵列格式成ext3格式)

# 我们首先把/usr/local/mysql/data/目录下的所有文件拷贝到另一个目录,我这里自创建了一个。

# mkdir

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