安装MySQL可以分为四步骤来进行。
第一步:下载MySQL.
从mysql网站上直接下载MySQL的源代码，并解压缩它。
目前mysql有好几个版本，我下载的是mysql-4.1.12.tar.gz档，并把它解压缩到了/usr/local/src里面。
假设下载的档案存放在当前的目录里,执行下面的指令解压缩：
#tar zxvf mysql-4.1.12.tar.gz -C /usr/local/src
这时候你的/usr/local/src/里面会多一个mysql-4.1.12的文件夹。
第二步：安装MySQL.
增加MySQL的系统账号：
#groupadd mysql
#useradd -g mysql mysql
进入/usr/local/src/mysql-4.1.12目录里面。
编译与安装MySQL
cd /usr/local/src
tar -zxvf mysql-4.1.9.tar.gz
cd mysql-4.1.9
./configure \
--prefix=/usr/local/mysql \
--with-unix-sock-path=/tmp/mysql.sock \
--with-charset=utf8
make
make install 如果安装成功，接下来就是把MySQL的配置文件复制到/etc下面，执行如下指令：
#cp my-medium.cnf /etc/my.cnf
第三步：安装MySQL系统资 料库及设置安全属性
进入到mysql的安装目录里。
#cd /usr/local/mysql
安装系统资料库
bin/mysql_install_db --user=mysql
设置目录的安全性
chown -R root .
chown -R mysql var
chgrp -R mysql .
第四步：设置MySQL设定档
# Example MySQL config file for medium systems.
#
# This is for a system with little memory (32M - 64M) where MySQL plays
# an important part, or systems up to 128M where MySQL is used together with
# other programs (such as a web server)
#
# You can copy this file to
# /etc/my.cnf to set global options,
# mysql-data-dir/my.cnf to set server-specific options (in this
# installation this directory is /usr/local/mysql/var) or
# ~/.my.cnf to set user-specific options.
#
# In this file, you can use all long options that a program supports.
# If you want to know which options a program supports, run the program
# with the "--help" option.
# The following options will be passed to all MySQL clients
[client]
#password = your_password
port = 3306
socket = /tmp/mysql.sock
# Here follows entries for some specific programs
# The MySQL server
[mysqld]
port = 3306
socket = /tmp/mysql.sock
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