centos yum安装mysql并设定密码（64位机器）
yum install mysql
yum install mysql-server
yum install mysql-devel
chgrp -R mysql /var/lib/mysql
chmod -R 770 /var/lib/mysql
service mysqld start
mysql
SET PASSWORD FOR 'root'@'localhost' = PASSWORD('secret_password');
如果yum install 出现 Transaction Check Error:
错误可以采用以下解决办法：
Transaction Check Error:
file /usr/lib/mysql/libmysqlclient.so.15.0.0 from install of mysql-5.0.77-4.el5_5.4.i386 conflicts with file from package mysqlclient15-5.0.91-1.jason.1.i386
file /usr/lib/mysql/libmysqlclient_r.so.15.0.0 from install of mysql-5.0.77-4.el5_5.4.i386 conflicts with file from package mysqlclient15-5.0.91-1.jason.1.i386
解决办法：
#yum remove mysql mysql-devel mysql-server
如果还是不行，使用绝招：
rpm -Uvh --force mysql-5.0.77-4.el5_5.4.i386.rpm
rpm -Uvh --force mysql-server-5.0.77-4.el5_5.4.i386.rpm
rpm -Uvh --force mysql-devel-5.0.77-4.el5_5.4.i386.rpm
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