MySQL

How to install MySQL 8 on CentOS

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MySQL powers the most demanding Web, E-commerce, SaaS and Online Transaction Processing (OLTP) applications. It is a fully integrated transaction-safe, ACID compliant database with full commit, rollback, crash recovery and row level locking capabilities. MySQL delivers the ease of use, scalability, and performance to power Facebook, Google, Twitter, Uber, and Booking.com.

In this tutorial, we’ll learn about how to setup MySQL 8 on CentOS.

Setup Yum repository

Execute the following command to enable MySQL yum repository on CentOS:

rpm -Uvh https://repo.mysql.com/mysql80-community-release-el7-3.noarch.rpm

Install MySQL 8 Community Server

Since the MySQL yum repository has multiple repositories configuration for multiple MySQL versions, you need to disable all repositories in mysql repo file then install MySQL 8:

sed -i 's/enabled=1/enabled=0/' /etc/yum.repos.d/mysql-community.repo
yum --enablerepo=mysql80-community install mysql-community-server

Start MySQL service

service mysqld start

Change root password

Run the following command to get MySQL temporary password

[root@learncode24h ~]# grep "A temporary password" /var/log/mysqld.log
2021-10-01T02:46:52.552604Z 6 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: rX+D?tRXI30g

Execute the command mysql_secure_installation to change password and secure MySQL:

[root@learncode24h ~]# 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):  << Just Press Enter as password is not set yet
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  << Type Y to set MariaDB root password
New password:  << Enter MariaDB root password
Re-enter new password:   << Confirm  MariaDB root 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 << Type Y to remove anonymous users
 ... 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  << Type Y to disable root login remotely
 ... 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 << Type Y to remove test database
 - 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 << Type Y to reload privillege table
 ... 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!

I'm a full stack developer. I have experiences with Java, Android, PHP, Python, C#, Web development...I hope website https://learncode24h.com will help everyone can learn code within 24h and apply it in working easily.

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