Før jeg ødelegger noe, når jeg logger inn med $ mysql -u root -p
, og viser databaser:
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| game_data |
| test |
+--------------------+
Så prøvde jeg å opprette en ny bruker og la merke til at noe er galt med PRIVILEGES.
Så jeg slettet de nye brukerne, og jeg antar at jeg fjernet 'root' og 'Admin' ved et uhell.
Så prøver jeg å opprette ' root & 39; igjen, men får tilgang nektet feil når jeg gir alle privilegier.
mysql> CREATE USER 'root'@'localhost' IDENTIFIED BY 'password';
mysql> grant all privileges on *.* to 'root'@'localhost' identified by 'password' with grant option;
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
Hvis jeg logger på MySQL igjen ved hjelp av $ mysql -u root -p
, og viser databaser,
+--------------------+
| Database |
+--------------------+
| information_schema |
+--------------------+
Alle de andre databasene er borte.
Hvordan fikser jeg MySQL nå?
Jeg finner ikke databasen 'mysql', kan ikke opprette database, opprette bruker, alt jeg prøver å gjøre vil få en feil.
FEIL 1045 (28000): Tilgang nektet for brukeren 'root'@'localhost' (bruker passord: YES).
Bør jeg installere MySQL på nytt ved hjelp av MacPorts? Hvis jeg installerer på nytt, vil jeg miste databasen game_data
, ikke sant?
Følg trinnene nedenfor.
Start MySQL-serverinstansen eller -demonen med alternativet --skip-grant-tables
(sikkerhetsinnstilling).
$ mysqld --skip-grant-tabeller
Utfør disse uttalelsene.
$ mysql -u root mysql
$mysql> UPDATE user SET Password=PASSWORD('my_password') where USER='root';
$mysql> FLUSH PRIVILEGES;
Hvis du møter det ukjente feltet Passordfeil ovenfor bruk:
update user set authentication_string=password('my_password') where user='root';
Til slutt starter du instansen/daemonen på nytt uten alternativet --skip-grant-tables
.
$ /etc/init.d/mysql omstart
Du skal nå kunne koble til med det nye passordet ditt.
$ mysql -u root -p
Skriv inn passord: mitt_passord
sudo mv /usr/local/mysql/data/ibdata1 /usr/local/mysql/data/ibdata1.bak
sudo mv /usr/local/mysql/data/ib_logfile0 /usr/local/mysql/data/ib_logfile0.bak
sudo mv /usr/local/mysql/data/ib_logfile1 /usr/local/mysql/data/ib_logfile1.bak
sudo cp -a /usr/local/mysql/data/ibdata1.bak /usr/local/mysql/data/ibdata1
sudo cp -a /usr/local/mysql/data/ib_logfile0.bak /usr/local/mysql/data/ib_logfile0
sudo cp -a /usr/local/mysql/data/ib_logfile1.bak /usr/local/mysql/data/ib_logfile1
sudo /etc/init.d/mysql restart
grep 'temporary password' /var/log/mysqld.log
Sort date (newest date)
Du kan se noe sånt som dette;
[root@SERVER ~]# grep 'temporary password' /var/log/mysqld.log
2016-01-16T18:07:29.688164Z 1 [Note] A temporary password is generated for root@localhost: O,k5.marHfFu
2016-01-22T13:14:17.974391Z 1 [Note] A temporary password is generated for root@localhost: b5nvIu!jh6ql
2016-01-22T15:35:48.496812Z 1 [Note] A temporary password is generated for root@localhost: (B*=T!uWJ7ws
2016-01-22T15:52:21.088610Z 1 [Note] A temporary password is generated for root@localhost: %tJXK7sytMJV
2016-01-22T16:24:41.384205Z 1 [Note] A temporary password is generated for root@localhost: lslQDvgwr3/S
2016-01-22T22:11:24.772275Z 1 [Note] A temporary password is generated for root@localhost: S4u+J,Rce_0t
[root@SERVER ~]# mysql_secure_installation
Sikre distribusjonen av MySQL-serveren.
Enter password for user root:
The existing password for the user account root has expired. Please set a new password.
New password:
Re-enter new password:
Hvis du ser at det står
... Failed! Error: Your password does not satisfy the current policy requirements
That means your password needs to have a character such as ! . # - etc...
mix characters well, upper case, lower case, ! . , # etc...
New password:
Re-enter new password:
The 'validate_password' plugin is installed on the server.
The subsequent steps will run with the existing configuration
of the plugin.
Using existing password for root.
Estimated strength of the password: 100
Change the password for root ? ((Press y|Y for Yes, any other key for No) : Y
New password:
Re-enter new password:
Estimated strength of the password: 100
Do you wish to continue with the password provided?(Press y|Y for Yes, any other key for No) : Y
By default, a MySQL installation has an anonymous user,
allowing anyone to log into MySQL without having to have
a user account created for them. This is intended only for
testing, and to make the installation go a bit smoother.
You should remove them before moving into a production
environment.
Remove anonymous users? (Press y|Y for Yes, any other key for No) : Y
Success.
Normally, root should only be allowed to connect from
'localhost'. This ensures that someone cannot guess at
the root password from the network.
Disallow root login remotely? (Press y|Y for Yes, any other key for No) : Y
Success.
By default, MySQL comes with a database named 'test' that
anyone can access. This is also intended only for testing,
and should be removed before moving into a production
environment.
Remove test database and access to it? (Press y|Y for Yes, any other key for No) : Y
- Dropping test database...
Success.
- Removing privileges on test database...
Success.
Reloading the privilege tables will ensure that all changes
made so far will take effect immediately.
Reload privilege tables now? (Press y|Y for Yes, any other key for No) : Y
Success.
All done!
[root@SERVER ~]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 11
Server version: 5.7.10 MySQL Community Server (GPL)
Se de siste 10 minuttene av [denne videoen][1], den lærer deg hvordan du gjør det.
Prøv det:
mysql --no-defaults --force --user=root --host=localhost --database=mysql
UPDATE user SET Password=PASSWORD('NEWPASSWORD') where USER='root';
FLUSH PRIVILEGES;