Access denied for user 'root@localhost' (using password:NO)
解决办法
Stop the service/daemon of mysql running
1 2
[root ~]# service mysql stop mysql stop/waiting
Start mysql without any privileges using the following option; This option is used to boot up and do not use the privilege system of MySQL.
1
[root ~]# mysqld_safe --skip-grant-tables &
enter the mysql command prompt
1 2
[root ~]# mysql -u root mysql>
Fix the permission setting of the root user ;
1 2 3 4 5 6 7 8 9 10
mysql> use mysql; Database changed mysql> select * from user; Empty set (0.00 sec) mysql> truncate table user; Query OK, 0 rows affected (0.00 sec) mysql> flush privileges; Query OK, 0 rows affected (0.01 sec) mysql> grant all privileges on *.* to root@localhost identified by 'YourNewPassword' with grant option; Query OK, 0 rows affected (0.01 sec)
if you don`t want any password or rather an empty password
1 2 3 4
mysql> grant all privileges on *.* to root@localhost identified by '' with grant option; Query OK, 0 rows affected (0.01 sec)* mysql> flush privileges; Query OK, 0 rows affected (0.00 sec)
Confirm the results:
1 2 3 4 5 6 7
mysql> select host, user from user; +-----------+------+ | host | user | +-----------+------+ | localhost | root | +-----------+------+ 1 row in set (0.00 sec)
Exit the shell and restart mysql in normal mode.
1 2 3 4
mysql> quit; [root ~]# kill -KILL [PID of mysqld_safe] [root ~]# kill -KILL [PID of mysqld] [root ~]# service mysql start
Now you can successfully login as root user with the password you set
