ERROR 1045 (28000): Access denied for user 'backup'@'mysql' (using password: YES)

mysql远程连接时提示失败

[[email protected] ~]# /usr/local/mysql/bin/mysql -ubackup -p123456 -h 192.168.6.36
Warning: Using a password on the command line interface can be insecure.
ERROR 1045 (28000): Access denied for user ‘backup‘@‘mysql‘ (using password: YES)

原因：我通过装好MySQL的虚拟机，克隆并修改了主机名，导致远程无法登陆；

[[email protected] ~]# mysql

mysql> select user,host from mysql.user;
+------------+-----------+
| user       | host      |
+------------+-----------+
| backup     | %         |
| test       | %         |
| backup     | 127.0.0.1 |
| root       | 127.0.0.1 |
| ebnewslave | 192.168.% |
| root       | ::1       |
|            | localhost |
| backup     | localhost |
| root       | localhost |
| test       | localhost |
|            | mysql     |
| root       | mysql     |
+------------+-----------+

解决方法：

修改root用户和“ ”对应的host为原机器名的值

update mysql.user set host=‘mysqlslave‘ where user=‘root‘ and host=‘mysql‘;

update mysql.user set host=‘mysqlslave‘ where user=‘ ‘ and host=‘mysql‘;

flush privileges ; ---注，如果不刷新权限和重启数据库，权限是不生效的。

ERROR 1045 (28000): Access denied for user 'backup'@'mysql' (using password: YES)