通过rpm包安装、配置及卸载mysql的详细过程.
以MySQL-server-4.0.14-0.i386.rpm为例，放在/data目录下
cd /data
rpm -ivh MySQL-server-4.0.14-0.i386.rpm
安装完成后在/usr/share/mysql目录中会有一个mysql的启动脚本mysql.server及示例配置文件等(如my-huge.cnf、my-large.cnf、my-medium.cnf)
拷贝一个示例配置文件作为mysql的配置文件：
cp /usr/share/mysql/my-medium.cnf /etc/my.cnf
rpm包安装完后自动将mysql安装成系统服务，所以可以使用下面命令启动、停止mysql
启动mysql
/etc/init.d/mysql start 或 service mysql start
停止mysql
/etc/init.d/mysql stop 或 service mysql stop
到此，mysql服务就安装配置完成。
安装mysql客户端
rpm -ivh MySQL-client-4.0.14-0.i386.rpm
mysql安装好后目录结构如下：
工具程序在/usr/bin目录中－－－ls /usr/bin/mysql*
服务器程序/usr/sbin/mysqld
数据目录/var/lib/mysql
默认情况下mysql将错误日志文件、二进制日志文件及进程文件写在/var/lib/mysql目录中,如localhost.err、localhost.pid、localhost-bin.001等
要改变这些情况可以修改/etc/my.cnf文件
如将日志文件写在/var/log目录中，可以在my.cnf文件中加入下面两行：
[mysqld_safe]
err-log = /var/log/mysqld.log
有个实用程序/usr/bin/mysql_install_db，该程序可以用来初始化mysql数据库，即创建/var/log/mysql目录，及创建mysql数据库(mysql授权表等信息)及test数据库(空库),如果不小心删除了/var/log/mysql目录可以通过该程序来初始化.
卸载mysql
rpm -qa|grep -i mysql
rpm -ev MySQL-server-4.0.14-0 MySQL-client-4.0.14-0
卸载后/var/lib/mysql中的数据及/etc/my.cnf不会删除，如果确定没用后就手工删除
rm -f /etc/my.cnf
rm -rf /var/lib/mysql
安装过程信息如下：
安装顺序
rpm -ivh mysql-3.23.41-1.i386.rpm
rpm -ivh mysql-devel-3.23.41-1.i386.rpm
rpm -ivh mysql-server-3.23.41-1.i386.rpm
[root@localhost perl]# rpm -ivh mysql-3.2*.rpm //第一个包就不顺
warning: mysql-3.23.52-3.i386.rpm: V3 DSA signature: NOKEY, key ID db42a60e
error: Failed dependencies:
perl-DBI is needed by mysql-3.23.52-3
perl-DBD-MySQL is needed by mysql-3.23.52-3
perl(CGI) is needed by mysql-3.23.52-3
perl(DBI) is needed by mysql-3.23.52-3
down perl-DBD-MySQL在disk3/redhat/RPMS下
perl-DBI在disk2/redhat/RPMS下
[root@localhost perl]# rpm -ivh perl-CGI*.rpm //以后会用到先装
warning: perl-CGI-2.81-55.i386.rpm: V3 DSA signature: NOKEY, key ID db42a60e
Preparing... ########################################### [100%]
1:perl-CGI ########################################### [100%]
[root@localhost perl]# rpm -ivh perl-DBI*
warning: perl-DBI-1.30-1.i386.rpm: V3 DSA signature: NOKEY, key ID db42a60e
Preparing... ########################################### [100%]
1:perl-DBI ########################################### [100%]
[root@localhost perl]# rpm -ivh perl-DBD-MySQL*
warning: perl-DBD-MySQL-2.1017-3.i386.rpm: V3 DSA signature: NOKEY, key ID db42a60e
error: Failed dependencies:
libmysqlclient.so.10 is needed by perl-DBD-MySQL-2.1017-3
google "libmysqlclient.so.10 mysql" //呵呵这个可是难倒了很多好汉
[root@localhost perl]# rpm -ivh libmysql*
warning: libmysql10-3.23.56-1.4mdk.i586.rpm: V3 DSA signature: NOKEY, key ID 22458a98
Preparing... ########################################### [100%]
1:libmysql10 ########################################### [100%]
[root@localhost perl]# rpm -ivh perl-DBD-MySQL*
warning: perl-DBD-MySQL-2.1017-3.i386.rpm: V3 DSA signature: NOKEY, key ID db42a60e
Preparing... ########################################### [100%]
1:perl-DBD-MySQL ########################################### [100%]
[root@localhost perl]# rpm -ivh mysql-3.23*
warning: mysql-3.23.52-3.i386.rpm: V3 DSA signature: NOKEY, key ID db42a60e
Preparing... ########################################### [100%]
1:mysql ########################################### [100%]
[root@localhost perl]# rpm -ivh mysql-devel*
warning: mysql-devel-3.23.52-3.i386.rpm: V3 DSA signature: NOKEY, key ID db42a60e
Preparing... ########################################### [100%]
1:mysql-devel ########################################### [100%]
[root@localhost perl]# rpm -ivh mysql-server*
warning: mysql-server-3.23.52-3.i386.rpm: V3 DSA signature: NOKEY, key ID db42a60e
Preparing... ########################################### [100%]
1:mysql-server ########################################### [100%]
安装测试
[root@localhost perl]# mysql
ERROR 2002: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
在搜索里找不到mysql执行程序，只有rpm安装包
在“服务”-看到了新增的 mysqld 打勾，restart
[root@localhost perl]# mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1 to server version: 3.23.52
Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
mysql>;
mysql成功安装并启动
因为缺省情况下mysql的root用户没有口令，使用下列
[root@localhost perl]# mysqladmin -u root password 747858969
[root@localhost perl]# mysql
ERROR 1045: Access denied for user: 'root@localhost' (Using password: NO)
[root@localhost etc]# mysql -u root -p
Enter password:****
mysql>;