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Today’s guide describes the installation of MySQL 8.0 on Ubuntu 20.04. MySQL is one of the most commonly used Database Management Systems. It uses the concept of relational databases and has a client/server architecture. It can be installed on various operating systems including Windows, CentOS and Debian among others.

Installing MySQL 8.0 on Ubuntu 20.04

The below steps describe how to install and configure MySQL 8.0 on Ubuntu 20.04.

Step 1: Add MySQL APT repository in Ubuntu

Ubuntu already comes with the default MySQL package repositories. In order to add or install the latest repositories, we are going to install package repositories. Download the repository using the below command:

wget https://dev.mysql.com/get/mysql-apt-config_0.8.12-1_all.deb

Once downloaded, install the repository by running the command below:

sudo dpkg -i mysql-apt-config_0.8.12-1_all.deb

In the prompt, choose Ubuntu Bionic and click Ok

he next prompt shows MySQL 8.0 chosen by default. Choose the first option and click OK

In the next prompt, select MySQL 8.0 server and click OK.

The next prompt selects MySQL8 by default. Choose the last option Ok and click OK.

Step 2: Update MySQL Repository on Ubuntu 20.04

Run the below command to update your system packages index list.

sudo apt-get update

Now search for MySQL 8.0 using apt cache as shown below:

$ sudo apt-cache policy mysql-server
mysql-server: 
 Candidate: 8.0.21-1ubuntu18.04 
 Version table: 
    8.0.21-1ubuntu18.04 500 
       500 http://repo.mysql.com/apt/ubuntu bionic/mysql-8.0 amd64 Packages 
    8.0.21-0ubuntu0.20.04.4 500 
       500 http://ke.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages 
       500 http://ke.archive.ubuntu.com/ubuntu focal-security/main amd64 Packages 
    8.0.19-0ubuntu5 500 
       500 http://ke.archive.ubuntu.com/ubuntu focal/main amd64 Packages 
*** 5.7.31-1ubuntu18.04 100 
       100 /var/lib/dpkg/status

Step 3: Install MySQL 8.0 on Ubuntu 20

Having found MySQL 8.0 in our system, we are going to install MySQL 8.0 client, MySQL 8.0 server with the below command:

sudo apt install -f mysql-client=8.0.21-1ubuntu18.04 mysql-community-server=8.0.21-1ubuntu18.04 mysql-server=8.0.21-1ubuntu18.04 

Enter and re-enter root password when prompted

Secure MySQL Installation

Run the command below to secure MySQL

$ sudo mysql_secure_installation

Press Enter. When prompted for password, provide the root password set above

Enter current password for root (enter for none): <Enter password>
VALIDATE PASSWORD PLUGIN can be used to test passwords 
and improve security. It checks the strength of password 
and allows the users to set only those passwords which are 
secure enough. Would you like to setup VALIDATE PASSWORD plugin? 

Press y|Y for Yes, any other key for No: Y 

There are three levels of password validation policy: 

LOW    Length >= 8 
MEDIUM Length >= 8, numeric, mixed case, and special characters 
STRONG Length >= 8, numeric, mixed case, special characters and dictionary                  file 

Please enter 0 = LOW, 1 = MEDIUM and 2 = STRONG: 1 
Using existing password for root. 

Estimated strength of the password: 25  
Change the password for root ? ((Press y|Y for Yes, any other key for No) : d


Remove anonymous users? [Y/n] Y 
Disallow root login remotely? [Y/n] Y 
Remove test database and access to it? [Y/n] Y 
Reload privilege tables now? [Y/n] Y 
Thanks for using MariaDB!

Check MySQL version

Connect to MySQL to check MySQL installed version. To connect to MySQL, run the below command:

mysql-u root -p

Provide the root password set above and once connected, execute the command as below to display MySQL version.

SELECT VERSION()
| VERSION() | 
+-----------+ 
| 8.0.21    | 
+-----------+ 
1 row in set (0.00 sec)

Step 4: Create MySQL User (Optional)

While still connected to MySQL, run the following commands to create a user:

CREATE USER 'lorna'@'%' IDENTIFIED BY 'MyStrongPass.';
GRANT ALL PRIVILEGES ON * . * TO 'lorna'@'%'; 
FLUSH PRIVILEGES;
exit

Step 5: Enable MySQL remote access (Optional)

By default, MySQL remote access is disabled. To enable it we need to edit mysqld.cnf file as below:

$ sudo vim /etc/mysql/mysql.conf.d/mysqld.cnf

Look for the line ‘bind_address’ and change as below:

# By default we only accept connections from localhost 
#bind-address   = 127.0.0.1 
bind-address   = 0.0.0.0

Save the file and restart mysql

$ sudo systemctl restart mysql

Allow remote connections through the firewall

$ sudo ufw allow from <remote_IP_address> to any port 3306
$ sudo ufw enable

To access the database from a remote machine, run the following command:

$ mysql -u user -h database_server_ip -p

That’s about the installation of mySQL 8.0 on Ubuntu 20.04. Below are more guides that will be f interest to you!

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