Install MariaDB with brew on macOS and fix the “access denied” issue

mariadb-brew-macos.md

Attempting mysql -u root fails with Access denied for user 'root'@'localhost immediately after doing brew install mariadb and starting mariadb with brew services start mariadb.

To fix it (with MariaDB still running):

1. sudo mysql then enter your Mac user password
2. ALTER USER 'root'@'localhost' IDENTIFIED BY 'newrootpassword'; replacing newrootpassword with the password you wish to use for the MariaDB root user.
3. Ctrl-C to exit mysql.

You should then be able to connect to MariaDB with mysql -u root -p, then entering the root password when prompted.

This is was very helpful. Thanks a lot!

Thanks!

Worked like a charm. Thanks

Thanks kbs.

Thanks for this. How do I bookmark this in GitHub ?

谢谢你!这真的很有用!!太酷了~

Thanks. This has helped me.

Man is a life saver!

Hero !!

If it is still not working for someone, then the root username is the same as the Mac user.

Thank you so much, it work on me

Saved my day!

Thanks !

👍

Thank you so much. I was stuck on this bug for hours and this is the only thing that worked!

Thanks for the hint. Ended up withALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPassword'; flush privileges; exit;.

thanks Nick, you saved me! 👍

Thanks alot

Thanks
At first, i don't believe a reset is needed after a new installation. But i really hard reset it over years. I wont past the relative commands i used to prevent misleading
useful knowledges increased.

Thanks a lot !!
Still good - even four years later ... 😅

cool!

Another tricks

❯ mariadb-secure-installation -u $(whoami)

NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MariaDB
      SERVERS IN PRODUCTION USE!  PLEASE READ EACH STEP CAREFULLY!

In order to log into MariaDB to secure it, we'll need the current
password for the root user. If you've just installed MariaDB, and
haven't set the root password yet, you should just press enter here.

Enter current password for root (enter for none):
OK, successfully used password, moving on...

Setting the root password or using the unix_socket ensures that nobody
can log into the MariaDB root user without the proper authorisation.

You already have your root account protected, so you can safely answer 'n'.

Switch to unix_socket authentication [Y/n] Y
Enabled successfully!
Reloading privilege tables..
 ... Success!


You already have your root account protected, so you can safely answer 'n'.

Change the root password? [Y/n] Y
New password:
Re-enter new password:
Password updated successfully!
Reloading privilege tables..
 ... Success!


By default, a MariaDB installation has an anonymous user, allowing anyone
to log into MariaDB 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? [Y/n] 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? [Y/n] Y
 ... Success!

By default, MariaDB 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? [Y/n] 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? [Y/n] Y
 ... Success!

Cleaning up...

All done!  If you've completed all of the above steps, your MariaDB
installation should now be secure.

Thanks for using MariaDB!

❯ mariadb -u root -proot
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 18
Server version: 11.7.2-MariaDB Homebrew

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]> ^DBye

@fathurrohman26 Thank you. This is a better way to initialize mariadb.