1.mysql 安装

yum安装
yum -y install mysql-server
开机自启
chkconfig mysqld on
启动mysql
service mysqld start
设置密码
 mysql -u root
select user,host,password from mysql.user;
set password for root@localhost=password('root');
 exit；

mysql重新登入
mysql -u root -p
开启远程访问
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'root' WITH GRANT OPTION;
FLUSH PRIVILEGES;
（远程连接不上可 先 
use mysql;
 UPDATE user SET Password=PASSWORD('123456') where USER='root';
再重新登入；
）