How to reset MariaDB's root user password
Posted on: Sunday, Dec 17, 2017
It's really annoying to forget what your MariaDB's root account password is. However, with just a little commandline effort, it's an easy challenge to resolve. I learned most of these instructions with this Digial Ocean article. It's a great article but it instructions for ending the MariaDB mysqld process didn't work for me on Ubuntu 17.04.
Stop MariaDB
$ sudo systemctl stop mariadbRestart the database without permission checking
This command doesn't seem to finish. After about 30 seconds or press enter to get back to a command line and go to the next step.
$ sudo mysqld_safe --skip-grant-tables --skip-networking &Connect to database with root
$ mysql -u rootReload grant tables with FLUSH PRIVILEGES
mysql> FLUSH PRIVILEGES; Reset root password
mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'new_password';Exit MySQL with
exit;Find and kill the mysqld process
The command below lists the mysqld processes.
ps aux | grep mysqldOn my system, the mysqld process to kill is the one associated with user mysql and /usr/sbin/mysqld as shown below.
mysql 4267 0.0 0.5 1775204 68340 pts/0 SNl 11:43 0:01
/usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql
--plugin-dir=/usr/lib/mysql/plugin --user=mysql
--skip-grant-tables --skip-networking --skip-log-error
--pid-file=/var/run/mysqld/mysqld.pid
--socket=/var/run/mysqld/mysqld.sock --port=3306Kill the /usr/sbin/mysqld process with
sudo kill -SIGTERM <pid-of-mysqld-process>Restart MariaDB
sudo systemctl start mariadbYou should now be able to log back into MariaDb with:
mysql -u root -pYou'll be prompted for the password; enter the one you just assigned to the root account.
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