mysql远程登录并设置密码

设置密码为password进行远程登录

[root@localhost ~]# mysql -uroot -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 88
Server version: 5.6.29-76.2-log Percona Server (GPL), Release 76.2, Revision ddf26fe

Copyright (c) 2009-2016 Percona LLC and/or its affiliates
Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
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owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> grant all on *.* to root@'%' identified by 'password';              
Query OK, 0 rows affected (0.00 sec)

mysql> exit

通过user数据库修改用户密码

mysql>use user;
mysql>UPDATE user SET password=PASSWORD('123456') WHERE user='root';
mysql>FLUSH PRIVILEGES;