How to run CentOS 8 on Acer Aspire 6920G

by Danila Vershinin, December 2, 2019

Acer Aspire 6920G is now an ancient laptop, but I still own one so this article is quite personal 🙂 I had no use for it, so decided to give it a spin for a fresh install of CentOS 8 while my Macbook Air is undergoing repair. Let’s see what happened and how I got […]


Fix FirewallD in CentOS 7

by Danila Vershinin, November 17, 2019

Here’s how to fix the FirewallD startup problem in CentOS 7. A permanent fix, not a half solution!


CentOS/RHEL 8 as your developer machine. Utilizing 64GB of RAM for performance

by Danila Vershinin, November 9, 2019

Leveraging 64 GB of RAM on your developer CentOS/RHEL 8 machine


SwissUpLabs themes and plugins for Magento 2? Stay away

by Danila Vershinin, November 2, 2019

Slow Magento 2 website? Check if you run the Argento theme by Swissup Labs and get rid of it.


Protect your signup forms from SPAM with NGINX and CleanTalk

by Danila Vershinin, September 6, 2019

Suppose you’re running Mautic on CentOS 7 machine. You’ve created a signup form and placed it on the front page of your website. The form is very simple: an input for an email address and Subscribe button. Bots are hitting it hard. They submit email addresses to your form, your database of subscribers have lots […]


NGINX and phpMyAdmin. When you have to…

by Danila Vershinin, August 18, 2019

The phpMyAdmin is the famous web client for MySQL databases. However, being an open-source product, it is subject to security vulnerabilities. The best thing is not using it at all. All the modern MySQL GUI clients support connecting via SSH tunneling. So you don’t have to open MYSQL port for outside. Neither you expose the […]


Boeing’s messy corporate website gives you a clue about the level of IT expertise… vs Airbus?

by Danila Vershinin, July 28, 2019

It appears that the Boeng corporate website is developed and maintained by low paid engineers from India, too.


DNS caching and beyond, in CentOS/RHEL and Fedora

by Danila Vershinin, July 21, 2019

Make use of DNS caching on your CentOS/RHEL 7/8 to speed up your server even faster!


FirewallD and trusted IP addresses

by Danila Vershinin, July 10, 2019

How to whitelist IP addresses in FirewallD like a PRO


How to install Viber in CentOS/RHEL 8

by Danila Vershinin, July 5, 2019

How to install Viber in CentOS/RHEL 8