Error 1044: Access denied for user ‘syz-remote’@‘%’ to database ‘webapp’

Cause: I was testing the code of golang connecting to the database. I finally reinstalled MySQL and set up remote login, but this problem still occurred.

My SYZ-remote account is specially created for remote login. Therefore, unlike the root user, it does not have the due permission. We need to set its permissions in MySQL .

View MySQL account permissions through this code

mysql> SELECT host,user,password_expired,Grant_priv,Super_priv FROM mysql.user;
+-----------+------------------+------------------+------------+------------+
| host      | user             | password_expired | Grant_priv | Super_priv |
+-----------+------------------+------------------+------------+------------+
| localhost | root             | N                | Y          | Y          |
| localhost | mysql.session    | N                | N          | Y          |
| localhost | mysql.sys        | N                | N          | N          |
| localhost | debian-sys-maint | N                | Y          | Y          |
| %         | syz-remote       | N                | N          | N          |
+-----------+------------------+------------------+------------+------------+
5 rows in set (0.00 sec)

You can see that the permission of Grant_priv and Super_priv in syz-remote is N

We gave him authority

update mysql.user set grant_priv = 'Y', Super_priv='Y' where user = 'syz-remote';

Refresh it again

flush privilegs;