This guide is to help you with the installation of MySQL 8 Server on CentOS 7 / RHEL 7 Linux system. MySQL 8 is the latest release of powerful MySQL database management system. It powers many enterprise applications, websites and transactional real-time systems.
To start installing MySQL 8.0 server on CentOS 7 / RHEL 7, you need to add the official MySQL community repository to your system. Run below commands to add it,
sudo yum localinstall https://dev.mysql.com/get/mysql80-community-release-el7-7.noarch.rpmPress y key to proceed with the installation:
....
Dependencies Resolved
======================================================================================================================================================================================================
Package Arch Version Repository Size
======================================================================================================================================================================================================
Installing:
mysql80-community-release noarch el7-7 /mysql80-community-release-el7-7.noarch 10 k
Transaction Summary
======================================================================================================================================================================================================
Install 1 Package
Total size: 10 k
Installed size: 10 k
Is this ok [y/d/N]: y
Install MySQL 8.0 on CentOS 7 / RHEL 7
Now that repo is added, you can install MysQL 8 without editing repository content since repo for 8 is enabled by default.
sudo yum --enablerepo=mysql80-community install mysql-community-serverA number of dependencies are installed automatically for you:
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Dependencies Resolved
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Package Arch Version Repository Size
======================================================================================================================================================================================================
Installing:
mysql-community-server x86_64 8.0.31-1.el7 mysql80-community 64 M
Installing for dependencies:
mysql-community-client x86_64 8.0.31-1.el7 mysql80-community 16 M
mysql-community-client-plugins x86_64 8.0.31-1.el7 mysql80-community 2.5 M
mysql-community-common x86_64 8.0.31-1.el7 mysql80-community 647 k
mysql-community-icu-data-files x86_64 8.0.31-1.el7 mysql80-community 2.1 M
mysql-community-libs x86_64 8.0.31-1.el7 mysql80-community 1.5 M
Transaction Summary
======================================================================================================================================================================================================
Install 1 Package (+5 Dependent packages)
Total download size: 87 M
Installed size: 409 M
Is this ok [y/d/N]: y
Installing MySQL 5.7 on CentOS 7 / RHEL 7 (Reference only)
To install MySQL 5.7, you need to disable mysql80-community repository then download it.
sudo yum --disablerepo=mysql80-community --enablerepo=mysql57-community install mysql-community-serverStarting MySQL 8 Service on CentOS 7 / RHEL 7
For CentOS 7 / RHEL 7, use systemd to start mysql service:
sudo systemctl enable --now mysqld.serviceConfirm that service status return as running:
$ systemctl status mysqld
● mysqld.service - MySQL Server
Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)
Active: active (running) since Wed 2021-09-29 19:46:31 UTC; 13s ago
Docs: man:mysqld(8)
http://dev.mysql.com/doc/refman/en/using-systemd.html
Process: 9114 ExecStartPre=/usr/bin/mysqld_pre_systemd (code=exited, status=0/SUCCESS)
Main PID: 9192 (mysqld)
Status: "Server is operational"
CGroup: /system.slice/mysqld.service
└─9192 /usr/sbin/mysqld
Sep 29 19:46:24 centos systemd[1]: Starting MySQL Server...
Sep 29 19:46:31 centos systemd[1]: Started MySQL Server.
To restart the service use the command:
sudo systemctl restart mysqld.serviceSet MySQL root password
Installation of MySQL 8.0 on CentOS 7 / RHEL 7 generates a temporary password for you. You can get it by running:
grep 'A temporary password is generated for root@localhost' /var/log/mysqld.log |tail -1It will look like below:
2021-09-29T19:46:27.745095Z 6 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: 3F24r/ik%pTdChange mysql root user password and secure database server installation:
$ sudo mysql_secure_installation
Securing the MySQL server deployment.
Enter password for user root: 3F24r/ik%pTd
The existing password for the user account root has expired. Please set a new password.
New password:
Re-enter new password:
The 'validate_password' component is installed on the server.
The subsequent steps will run with the existing configuration
of the component.
Using existing password for root.
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!
Configure Firewall if Database Server is accessed remotely
With iptables:
sudo iptables -A INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT
sudo service iptables restarttFirewalld:
sudo firewall-cmd --add-service mysql --permanent
sudo firewall-cmd --reloadTest your settings:
$ mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 13
Server version: 8.0.26 MySQL Community Server - GPL
Copyright (c) 2000, 2021, Oracle and/or its affiliates.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> SELECT VERSION();
+-----------+
| VERSION() |
+-----------+
| 8.0.26 |
+-----------+
1 row in set (0.00 sec)
mysql> quit
Bye
We have successfully installed MySQL 8.0 on CentOS 7 / RHEL 7 Linux System. We also secured the database server by setting root password, removing test database and disabling remote root user logins to the database server.
