Today I did a login as root into Ubuntu 14.04.1 LTS ll
and then apt-get install mariadb-server (without sudo but as root).
With mySQL -h localhost -u root --password=<PW> I got
Access denied for user 'root'@'localhost' (using password: YES)
With mySQL -u root -p I logged into the DB and did
GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' IDENTIFIED BY '<PW>';
FLUSH ALL PRIVILEGES;
But this did not help. Have you got any idea? I did not find the answer for the similar questions.
TL;DR: To access newer versions of mysql/mariadb after as the root user, after a new install, you need to be in a root shell (ie sudo mysql -u root, or mysql -u root inside a shell started by su - or sudo -i first)
Having just done the same upgrade, on Ubuntu, I had the same issue.
What was odd was that
sudo /usr/bin/mysql_secure_installation
Would accept my password, and allow me to set it, but I couldn't log in as root via the mysql client
I had to start mariadb with
sudo mysqld_safe --skip-grant-tables
to get access as root, whilst all the other users could still access fine.
Looking at the mysql.user table I noticed for root the plugin column is set to unix_socket whereas all other users it is set to 'mysql_native_password'. A quick look at this page: https://mariadb.com/kb/en/mariadb/unix_socket-authentication-plugin/ explains that the Unix Socket enables logging in by matching uid of the process running the client with that of the user in the mysql.user table. In other words to access mariadb as root you have to be logged in as root.
Sure enough restarting my mariadb daemon with authentication required I can login as root with
sudo mysql -u root -p
or
sudo su -
mysql -u root -p
Having done this I thought about how to access without having to do the sudo, which is just a matter of running these mysql queries
GRANT ALL PRIVILEGES on *.* to 'root'@'localhost' IDENTIFIED BY '<password>';
FLUSH PRIVILEGES;
(replacing <password> with your desired mysql root password). This enabled password logins for the root user.
Alternatively running the mysql query:
UPDATE mysql.user SET plugin = 'mysql_native_password' WHERE user = 'root' AND plugin = 'unix_socket';
FLUSH PRIVILEGES;
Will change the root account to use password login without changing the password, but this may leave you with a mysql/mariadb install with no root password on it.
After either of these you need to restarting mysql/mariadb:
sudo service mysql restart
And voila I had access from my personal account via mysql -u root -p
PLEASE NOTE THAT DOING THIS IS REDUCING SECURITY Presumably the MariaDB developers have opted to have root access work like this for a good reason.
Thinking about it I'm quite happy to have to sudo mysql -u root -p so I'm switching back to that, but I thought I'd post my solution as I couldn't find one elsewhere.
from superuser accepted answer:
sudo mysql -u root
use mysql;
update user set plugin='' where User='root';
flush privileges;
exit;
Run mysql_upgrade.
Check that
SHOW GRANTS FOR 'root'@'localhost';
says
GRANT ALL PRIVILEGES ON ... WITH GRANT OPTION
Check that the table exists _mysql.proxies_priv_.
In clean Ubuntu 16.04 LTS, MariaDB root login for localhost changed from password style to sudo login style...
so, just do
sudo mysql -u root
since we want to login with password, create another user 'user'
in MariaDB console... (you get in MariaDB console with 'sudo mysql -u root')
use mysql
CREATE USER 'user'@'localhost' IDENTIFIED BY 'yourpassword';
\q
then in bash shell prompt,
mysql-workbench
and you can login with 'user' with 'yourpassword' on localhost
System like Ubuntu prefers to use auth_socket plugin. It will try to authenticate by comparing your username in DB and process which makes mysql request; it is described in here
The socket plugin checks whether the socket user name (the operating system user name) matches the MySQL user name specified by the client program to the server, and permits the connection only if the names match.
Instead you may want to back with the mysql_native_password, which will require user/password to authenticate.
About the method to achieve that, I recommend this instead.
I had to be logged into Ubuntu as root in order to access Mariadb as root. It may have something to do with that "Harden ..." that it prompts you to do when you first install. So:
$ sudo su
[sudo] password for user: yourubunturootpassword
# mysql -r root -p
Enter password: yourmariadbrootpassword
and you're in.
Try the command
sudo mysql_secure_installation
press enter and assign a new password for root in mysql/mariadb.
If you get an error like
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock'
enable the service with
service mysql start
now if you re-enter with
mysql -u root -p
if you follow the problem enter with sudo su and mysql -u root -p now apply permissions to root
GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' IDENTIFIED BY '<password>';
this fixed my problem in MariaDB.
Good luck
The new command to flush the privileges is:
FLUSH PRIVILEGES
The old command FLUSH ALL PRIVILEGES does not work any more.
You will get an error that looks like that:
MariaDB [(none)]> FLUSH ALL PRIVILEGES;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'ALL PRIVILEGES' at line 1
Hope this helps :)
Source: Stackoverflow.com