¿Cómo instalar MySQL en CentOS 7.x?

MySQL es uno de los sistemas de administración de bases de datos más populares. Por ahora, MySQL ya no está dentro del repositorio de Centos y MariaDB ahora es la base de datos predeterminada que ofrecen los repositorios de Centos.

Creemos que ha iniciado sesión con el usuario root para realizar estos pasos. Consulte los siguientes pasos para instalar MySQL 5.7 en Centos 7.1

1. En primer lugar, actualicemos los centos con el comando de actualización yum.
   
   

   Yum update

2. Instale wget para descargar los archivos de Internet.
   
   

   yum  install wget 

3. Procedamos a instalar MySQL. Descargue y agregue el repositorio al principio.
   
   

   wget https://dev.mysql.com/get/mysql80-community-release-el7-1.noarch.rpm
   
   rpm -ivh mysql80-community-release-el7-3.noarch.rpm
   

4. Ejecute el siguiente comando para instalar MySQL 5.7 en su VPS.
   
   

   yum -y install mysql-community-server  --disablerepo=mysql80-community --enablerepo=mysql57-community

5. Inicie y compruebe el estado del servicio MySQL.
   
   

   systemctl start mysqld
   
   systemctl enable mysqld
   
   systemctl status mysqld

6. Obtenga una contraseña temporal para el usuario raíz: 
   
   

   less /var/log/mysqld.log | grep pass
   A temporary password is generated for [email protected]: o!5y,JGALQa

7. Ejecute una herramienta de instalación segura para restablecer la contraseña.
   
   

   $ sudo mysql_secure_installation

Securing the MySQL server deployment.
Enter password for user root: 
The 'validate_password' plugin is installed on the server.
The subsequent steps will run with the existing configuration
of the plugin.
Using existing password for root.

Estimated strength of the password: 100 
Change the password for root ? ((Press y|Y for Yes, any other key for No) : y

New password: 

Re-enter new password: 

Estimated strength of the password: 100 
Do you wish to continue with the password provided?(Press y|Y for Yes, any other key for No) : y
By default, a MySQL installation has an anonymous user,
allowing anyone to log into MySQL 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? (Press y|Y for Yes, any other key for No) : 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? (Press y|Y for Yes, any other key for No) : y
Success.

By default, MySQL 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? (Press y|Y for Yes, any other key for No) : 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? (Press y|Y for Yes, any other key for No) : y
Success.

All done!

1. Conectar el servidor mysql: 
   
   

   mysql -u root -p