@Deepin install MySQL (MariaDB) does not prompt to set a password (password is empty)
1. Install Mysql
input the command:
sudo apt-get update
sudo apt-get install mysql-server mysql-client
It is found that there is no prompt to set the password. Follow the tutorial to find the debian.conf file under / etc / mysql / to obtain the user name and password. It is found that the password is empty and you cannot enter it.
sudo cat /etc/mysql/debian.cnf
mysql -uroot -p
Enter password:
2. Change password
Prepare to change the password, try according to the following article;
how to modify the mysql database password / how to deal with the situation where the debian-sys-maint password is changed.
sudo service mysql stop
sudo mysqld_safe --user=mysql --skip-grant-tables --skip-networking&
mysql
MariaDB [(none)]> use mysql;
MariaDB [mysql]> update user set password=password('123456') where user='root'
MariaDB [mysql]> flush privileges;
Still unable to log in.
3. Make MariaDB security settings
mysql -V
mysql Ver 15.1 Distrib 10.1.37-MariaDB, for debian-linux-gnu (x86_64) using readline 5.2
Checking through the version, I found that MySQL was replaced with MariaDB. The default root password of MariaDB is empty, so set:
sudo systemctl start mariadb
sudo /usr/bin/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
you haven't set the root password yet, the password will be blank,
so you should just press enter here.
Enter current password for root (enter for none):
OK, successfully used password, moving on...
Setting the root password ensures that nobody can log into the MariaDB
root user without the proper authorisation.
Set root password? [Y/n] y
New password:
Re-enter new password:
Sorry, you can't use an empty password here.
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!
Original article: mysql (mariadb) reinstalled.
However, it is still useless.
4. Uninstall and reinstall
After repeated attempts many times, switch to root, uninstall MySQL, and then reinstall, it turned out to be fine / (ㄒ o ㄒ) / ~~
$ su root
apt-get remove --purge mysql-*
apt-get autoremove mysql-server
apt-get remove mysql-common
dpkg -l |grep ^rc|awk '{print $2}' |sudo xargs dpkg -P
apt-get install mysql-server mysql-client
After reinstalling, the password is still empty, but you can log in.
pgrep mysqld
8957
mysql -uroot -p
Enter password:
elcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 2
Server version: 10.1.37-MariaDB-0+deb9u1 Debian 9.6
Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
5. (Update) The final solution
The cause was finally found to be a user plug-in problem. Follow the second step to change the password and add a plug-in description:
MariaDB [(none)]> UPDATE mysql.user SET authentication_string = PASSWORD('mypassword'), plugin = 'mysql_native_password' WHERE User = 'root' AND Host = 'localhost';
MariaDB [(none)]> FLUSH PRIVILEGES;
MariaDB [(none)]> exit
Shut down and restart the service:
$ service mysql stop
$ sudo service mysql start
Original link: https://blog.csdn.net/weixin_43329319/article/details/90240762