How To Troubleshoot Common Nginx Errors All Ways

There are several methods you can use to troubleshoot Nginx errors. Keep in mind that these methods of troubleshooting are meant as a starting point, and further investigation is often required to diagnose the root cause of an issue. As you go through this tutorial, the errors themselves will provide key information leading you to a solution.

This tutorial will review the following commands that are commonly used to troubleshoot Nginx across most Linux distributions.
You will learn more about these commands and how to use them for troubleshooting various Nginx errors.

Commands used
sudo nginx -t
systemctl status nginx
sudo systemctl restart nginx
sudo ufw status
sudo ufw allow 'Nginx HTTPS'
sudo ufw allow 'Nginx Full'
sudo nano /etc/nginx/sites-available/your_domain

Useful links