Preden sem nekaj pokvaril, ko se prijavim z uporabo $ mysql -u root -p
in prikažem podatkovne baze:
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| game_data |
| test |
+--------------------+
Nato sem poskušal ustvariti novega uporabnika in opazil, da je nekaj narobe s PRIVILEGIJAMI.
Zato sem izbrisal nove uporabnike in mislim, da sem pomotoma odstranil 'root' in 'Admin'.
Nato poskušam znova ustvariti 'root', vendar dobim napako Access denied (zavrnjen dostop), ko naredim grant all privileges (podelitev vseh privilegijev).
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)
Če se ponovno prijavim v MySQL z uporabo $ mysql -u root -p
in prikažem zbirke podatkov,
+--------------------+
| Database |
+--------------------+
| information_schema |
+--------------------+
Vse druge zbirke podatkov izginejo.
Kako naj zdaj popravim MySQL?
Ne morem najti podatkovne baze 'mysql', ne morem ustvariti podatkovne baze, ustvariti uporabnika, karkoli poskušam narediti, se pojavi napaka.
ERROR 1045 (28000): Uporabnik 'root'@'localhost' (z geslom: YES) nima dostopa.
Ali naj ponovno namestim MySQL z uporabo MacPorts? Če jo bom ponovno namestil, bom izgubil podatkovno zbirko game_data
, kajne?
Sledite spodnjim korakom.
Zagon primerka strežnika MySQL ali demona z možnostjo ---skip-grant-tables
(varnostna nastavitev).
$ mysqld --skip-grant-tables
Izvedite te ukaze.
$ mysql -u root mysql
$mysql> UPDATE user SET Password=PASSWORD('my_password') where USER='root';
$mysql> FLUSH PRIVILEGES;
Če se soočite z napako neznanega polja Geslo zgoraj, uporabite:
update user set authentication_string=password('my_password') where user='root';
Nazadnje ponovno zaženite instanco/demona brez možnosti ---skip-grant-tables
.
$ /etc/init.d/mysql restart
Zdaj bi se morali lahko povezati z novim geslom.
$ mysql -u root -p
Vnesite geslo: my_password
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)
Morda boste videli nekaj takega;
[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
Varovanje namestitve strežnika MySQL.
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:
Če vidite, da piše
... 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)
Oglejte si zadnjih 10 minut [tega videoposnetka][1], kjer boste izvedeli, kako to narediti.
Poskusite:
mysql --no-defaults --force --user=root --host=localhost --database=mysql
UPDATE user SET Password=PASSWORD('NEWPASSWORD') where USER='root';
FLUSH PRIVILEGES;