mysql启动成功
service mysqld start
mysql is OK
mysql登录错误 ：
[root@localhost ~]# mysql -uroot -p123456
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
解决：
vim /etc/my.cnf 找到 socket路径
scoket=/tmp/mysql.socket
mkdir /var/lib/msql
ln -s /tmp/mysql.socket /var/lib/mysql/
service mysqld start
