After restarting Ubuntu, say after and upgrade, you’ll need to restart a few services to get your WordPress site back up and running – In this case, PHP, MySQL and Apache.

Here’s how it’s done.

1) SSH in to your server.

ssh -i /path/-to-my-pem-file.pem username@my-servers-ip

2) Run the following commands.

// Check your PHP version
php -v

// Restart PHP
sudo service php7.x-fpm start // change x for your PHP version

// Restart MySQL
sudo service mysql restart

// Restart Apache
sudo apachectl restart