安装Mysql遇到的问题： libaio.so.1()(64bit) is needed by MySQL ***

错误信息

Linux CenterOs 64位中安装 MySQL-server-5.5.25a-1.rhel5.x86_64.rpm 出现以下错误
[root@localhost upload]# rpm -ivh MySQL-server-5.5.25a-1.rhel5.x86_64.rpm
error: Failed dependencies:
libaio.so.1()(64bit) is needed by MySQL-server-5.5.25a-1.rhel5.x86_64
libaio.so.1(LIBAIO_0.1)(64bit) is needed by MySQL-server-5.5.25a-1.rhel5.x86_64
libaio.so.1(LIBAIO_0.4)(64bit) is needed by MySQL-server-5.5.25a-1.rhel5.x86_64
从以上错误信息可以看出是因为缺少库libaio，所以需要安装libaio

安装libaio-0.3.107-10.el6.x86_64.rpm

下载地址：
http://mirror.centos.org/centos/6/os/x86_64/Packages/libaio-0.3.107-10.el6.x86_64.rpm
安装完成后，即可成功安装MySQL-server-5.5.25a-1.rhel5.x86_64.rpm

错误信息

error: Failed dependencies:

        /usr/bin/perl is needed by MySQL-server-5.6.14-1.linux_glibc2.5.x86_64

错误信息：
[root@localhost mysql]# mysql -u root -p
Enter password: 
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
解决方法：
方法一： 
# /etc/init.d/mysql stop 
# mysqld_safe --user=mysql --skip-grant-tables --skip-networking & 
# mysql -u root mysql 
mysql> UPDATE user SET Password=PASSWORD(’newpassword’) where USER=’root’; 
mysql> FLUSH PRIVILEGES; 
mysql> quit 
# /etc/init.d/mysql restart 
# mysql -uroot -p 
Enter password: <输入新设的密码newpassword> 

错误信息

MySql5.6操作时报错：You must SET PASSWORD before executing this statement解决

mysql>  SET PASSWORD = PASSWORD('123456');

Query OK, 0 rows affected (0.03 sec)

mysql> create database roger;

Query OK, 1 row affected (0.00 sec)

也就是用mysql>  SET PASSWORD = PASSWORD('123456');这句话重新设置一次密码！