在按照前面文章中方法搭建Mysql数据库之后，发现其他机器还是不能访问，
参考以下文章对权限进行修改之后，发现本地机器中root不能访问了。
http://www.cnblogs.com/ycsfwhh/archive/2012/08/07/2626597.html
后来使用 select host, user, grant_priv from user;
发现grant_priv一列有问题，只有有grant_priv的用户才能对其他用户赋予权限。
修改成以下这样，就好了。
+-------------------------------------------------+------+------------+ | host | user | grant_priv | +-------------------------------------------------+------+------------+ | % | root | Y | | gzns-ecom-baiduhui-201605-m42n02.gzns.baidu.com | root | Y | | 127.0.0.1 | root | Y | | ::1 | root | Y | | localhost | | N | | gzns-ecom-baiduhui-201605-m42n02.gzns.baidu.com | | N | | localhost | root | N | +-------------------------------------------------+------+------------+
结果发现本机还是连不上：
$ mysql -P8306 -uroot -p123456 ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
再查表看到password这一栏：
mysql> select host, user, Password, grant_priv from user;
+-------------------------------------------------+------+-------------------------------------------+------------+
| host | user | Password | grant_priv |
+-------------------------------------------------+------+-------------------------------------------+------------+
| % | root | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 | Y |
| localhost | root | | Y |
| 127.0.0.1 | root | | Y |
| ::1 | root | | Y |
| localhost | | | N |
| gzns-ecom-baiduhui-201605-m42n02.gzns.baidu.com | | | N |
| 127.0.0.1 | | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 | N |
+-------------------------------------------------+------+-------------------------------------------+------------+
7 rows in set (0.00 sec)
发现localhost和root这一栏，没有密码，所以不用密码才能登录：
$ mysql -P8306 -uroot Welcome to the MySQL monitor. Commands end with ; or g. Your MySQL connection id is 294 Server version: 5.5.30-log Source distribution Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or 'h' for help. Type 'c' to clear the current input statement. mysql>