mysql遠程連接時提示失敗
[root@mysql ~]# /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：我通過裝好MySQL的虛擬機，克隆並修改了主機名，導致遠程無法登陸；
[root@mysqlslave ~]# 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 |
+------------+-----------+
解決方法：
修改root用戶和“ ”對應的host爲原機器名的值
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，如果不刷新權限和重啓數據庫，權限是不生效的。