MariaDB: Instalar servidor

  • En esta guía vamos instalar y configurar un servidor de bases de datos MYSQL, sobre un contenedor de PROXMOX con debian 9
  • Establecemos una ip fija: guía
  • Creamos el usuario ugit: guía
  • Actualizamos el sistema: guía
  • Instalamos la guía de seguridad : guía
  • Instalamos mysql
apt install mysql-server mysql-client

Configuramos el servicio

  • Mandamos a ejecutar la configuración inicial
mysql_secure_installation
  • RESULTADO
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): HB3

OK, successfully used password, moving on...

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

You already have a root password set, so you can safely answer 'n'.

Change the root password? [Y/n] n

 ... skipping.

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!

Crear usuario remoto

  • Descomentamos que solo se pueda conectar por la ip local, abrimos
nano /etc/mysql/mariadb.conf.d/50-server.cnf  
  •  Modificamos
bind-address           = 127.0.0.1
X
#bind-address           = 127.0.0.1
  • Reiniciamos el servicio
service mariadb restart
  • Ingresamos por la terminal con el usuario «root»
mysql -u root -p
  • Creamos el usuario remoto
CREATE USER 'remoto'@'%' IDENTIFIED BY 'RB0';
  • Le otorgamos privilegios
GRANT ALL PRIVILEGES ON *.* TO 'remoto'@'%' IDENTIFIED BY 'RB0' with grant option;
  • Recargamos los privilegios
FLUSH PRIVILEGES;
  • Verificamos los permisos
SHOW GRANTS FOR remoto;
  • RESULTADO
+----------------------------------------------------------------------------------------------------------------------------------+
| Grants for remoto@% |
+----------------------------------------------------------------------------------------------------------------------------------+
| GRANT ALL PRIVILEGES ON *.* TO 'remoto'@'%' IDENTIFIED BY PASSWORD '*dddddd' WITH GRANT OPTION |
+----------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)
  • Si deseamos remover privilegios
REVOKE ALL PRIVILEGES ON basedatos.* FROM remoto;
  • Si deseamos eliminar el usuario
DROP USER remoto;