Homebrew Mariadb Mysql installation root access denied - mysql

Question

So I basically am installing mariadb with mysql on my mac using homebrew.
These are the steps I made:
brew doctor -> worked
brew update -> worked
brew install mariadb -> worked
mysql_install_db -> Failed
WARNING: The host 'Toms-MacBook-Pro.local' could not be looked up
with /usr/local/Cellar/mariadb/10.4.6_1/bin/resolveip. This probably
means that your libc libraries are not 100 % compatible with this
binary MariaDB version. The MariaDB daemon, mysqld, should work
normally with the exception that host name resolving will not work.
This means that you should use IP addresses instead of hostnames when
specifying MariaDB privileges ! mysql.user table already exists!
Running mysql_upgrade afterwards gave me following error:
Version check failed. Got the following error when calling the 'mysql'
command line client ERROR 1698 (28000): Access denied for user
'root'#'localhost' FATAL ERROR: Upgrade failed
I can't enter mysql like this:
mysql -uroot
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)
but like this:
sudo mysql -u root
The user table returns this:
MariaDB [(none)]> USE mysql;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
MariaDB [mysql]> SELECT User, Host, plugin FROM mysql.user;
+---------------+-------------------------+-----------------------+
| User | Host | plugin |
+---------------+-------------------------+-----------------------+
| root | localhost | mysql_native_password |
| toms | localhost | mysql_native_password |
| | localhost | |
| | toms-macbook-pro.local | |
+---------------+-------------------------+-----------------------+
4 rows in set (0.004 sec)

Answer 1

You could try to update the root password and access it afterwards
ALTER USER 'root'#'localhost' IDENTIFIED BY 'root';
Exit Mysql and try to login
mysql -uroot -p # then use root as a password

Answer 2

What is the issue?
Install MariaDB using brew, brew install mariadb#10.2.
Try to reset root password.
Method 1: mysqld_safe command
run command: brew services stop mariadb#10.2
run command: mysqld_safe --skip-grant-tables --skip-networking
on a new terminal tab,
run command for MariaDB <= 10.4: mysql_secure_installation
run command for MariaDB >= 10.4 mariadb-secure-installation
this will ask to enter root password
hit enter without entering any password (this step might never go away!)
if empty root password is granted in previous step
enter and re-enter new password in the next steps
this could show some errors Password update failed!
Method 2: /usr/local/mysql/bin/mysqladmin -u root -p password
this will ask to enter password
hit enter without entering any password
this will show some errors!
But preceding two methods did not work!
Follow the working method:
start the mariadb#10.2 service brew services start mariadb#10.2
run mysql.servert start
this will show an error with error log file location
typical mariadb error file location: /usr/local/var/mysql/<filename>.local.err
run tail -f /usr/local/var/mysql/<filename>.local.err
then re-run mysql.servert start
there will be an error related to Invalid flags lib
run brew services stop mariadb#10.2
(BACKUP, BACKUP, BACKUP YOUR DBS! THIS WILL DELETE ALL DBs!) run sudo rm -rf /usr/local/var/mysql
run
mysql_install_db --verbose --user=`whoami`
--basedir="$(brew --prefix mariadb#10.2)"
--datadir="/usr/local/var/mysql" --tempdir="/tmp"
This will get the mariaDB Cellar installation path from brew
and this will install the initial db.
instead of running mysql_secure_installation or
mariadb-secure-installation run: sudo mysql -u root
this will drop to mysql shell
enter command: use mysql;
enter command: ALTER USER 'root#localhost' IDENTIFIED BY '<password>'; (replace the )
enter command: ALTER USER 'root#127.0.0.1' IDENTIFIED BY '<password>'; (replace the )
enter command: FLUSH PRIVILEGES;
enter command: exit
now you can run mysql -u root -p and use the <password> entered in earlier step.
That's all!

Answer 3

MariaDB 10.4 enables Unix socket authentication plugin for the local root by default. It means that on a freshly installed system you can connect to a running server without a password, as long as you are a local root (e.g. run under sudo) and using a socket rather than TCP.
Further, MariaDB 10.4 allows multiple authentication methods for accounts. It configures the local root to be able to use password authentication as well, but it initially invalidates the password (doesn't set an empty password as it used to). If you want to use the password authentication and connect as mysql -uroot -p, you need first connect as a root using Unix socket and run SET PASSWORD=....
The advanced user configuration is now stored in mysql.global_priv table in JSON format. mysql.user has been kept for backward compatibility, but it has stopped being a table and has become a view. As a consequence of allowing multiple authentication methods, it doesn't always show user configuration accurately. Specifically, it doesn't show all authentication methods available for a user, you need to query mysql.global_priv for that. On a fresh installation, you'll see something like
+-----------+--------+--------------------------------------------------------------------------------------------------------------------------------------------+
| Host | User | Priv |
+-----------+--------+--------------------------------------------------------------------------------------------------------------------------------------------+
| localhost | root | {"access":18446744073709551615,"plugin":"mysql_native_password","authentication_string":"invalid","auth_or":[{},{"plugin":"unix_socket"}]} |
...
You can find more information about 10.4 authentication changes here.

Answer 4

I'm using this mysql_secure_installation and it now works for me:
$ mysql_secure_installation
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): << enter root here >>
I enter root as current password
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.
and do the rest