I’m using Linode hosting my blog ,I just upgrade ubuntu from 14.04 to 20.04 ,so I reinstalled wordpress ,below is the step I was using.

Install Lamp using tasksel

sudo apt update
sudo apt install tasksel
sudo tasksel --list
sudo tasksel install lamp-server
sudo apt remove tasksel

Virtual host setup

1.Create a apache configuration file for your wordpress site(Replace example.com with your domain name)

sudo cp /etc/apache2/sites-available/000-default.conf /etc/apache2/sites-available/example.com.conf

2.Edit the conf file created above and set your ServerName and DocumentRoot.Eg:

<VirtualHost *:80>
        ServerName ubuntututorials.org
        ServerAlias www.ubuntututorials.org
        ServerAdmin webmaster@localhost
        DocumentRoot /var/www/html/ubuntututorials.org/public_html

        ErrorLog ${APACHE_LOG_DIR}/error.log
        CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>

Note: It’s better to add and “www” ServerAlias if you are using the base domainname

3.Create required directory

sudo mkdir -p /var/www/html/example.com/public_html

4.Enable your site and disable the apache default one

sudo a2ensite example.com
sudo a2dissite 000-default.conf
sudo systemctl reload apache2

Mysql Setup

1.Login into mysql using root

sudo mysql -u root

2.Create a database instance for you wordpress site.Eg:

CREATE DATABASE wordpress;

3.Create a mysql user and grant it the full access to the db create in step 2

CREATE USER 'wpuser' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON wordpress.* TO 'wpuser';
quit

WordPress installation and setup

1.Download the latest wordpress package somewhere and extract it

sudo wget http://wordpress.org/latest.tar.gz
sudo tar -xf latest.tar.gz

2.Move wordpress files to your public_html directory

sudo mv wordpress/* /var/www/html/example.com/public_html/

3.Chown the owner and group to www-data

sudo chown www-data:www-data -R /var/www/html/example.com/public_html/

4.Configure WordPress , open your wordpress site now ,you should be able to see the configuration page

Use the database name / username/password created above

Some Optional setup

1.Enable Permalinks for your wordpress site , you can add below lines into your wordpress’s apache site configure file

<Directory /var/www/html/example.com/public_html>
    Options Indexes FollowSymLinks
    AllowOverride All
    Require all granted
</Directory>
sudo systemctl reload apache2

2.Install phymyadmin

sudo apt install phpmyadmin

3.Enable https for your wordpress site