Use Case: Horizontal Scaling vs Vertical Scaling with Nginx

When deploying high traffic sites/web apps, often times you’ll be faced with a dilemma on whether to use horizontal scaling or vertical scaling. Horizontal scaling is the use of several…

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Overview of Load Balancing with Nginx

Load balancing is a way of distributing traffic to computing resources such as servers or other network components. The technique is primarily used to improve performance: by increasing concurrency and…

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How to create a HTTP load balancer with Nginx

Introduction A load balancer is simply a piece of hardware or software that distributes traffic between two or more servers (upstream/backend servers). Load balancing is a common technique used to…

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How to secure PHP for WordPress

WordPress is a Content Management System that runs on PHP and MySQL. It the most popular CMS used worldwide and as such, is targeted most by attackers. In a previous…

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How to harden Apache Web Server on Centos 7

Apache is the most popular web server used in the internet. It is ideal for most situations and allows flexibility for shared environments through the use of .htaccess file. This…

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ERROR: sudo: pam_open_session: System error sudo: policy plugin failed session initialization

I got this error when trying to run a few commads with sudo right after I set password expiration on my RHEL7 box. Immediately after, I couldn’t use sudo for…

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How to Install Premium SSL on Hostname in CWP on Apache

Sometimes, you may choose to install premium SSL such as Comodo Positive SSL or Rapid SSL on your hostname instead of the free Let’s Encrypt SSL provided by CWP. Below…

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cPanel® Price Hike – All you need to know

cPanel® is one of the best software I have ever used. It’s a piece of work to admire. It’s reliable, effective, easy to use, has a beautiful interface, very functional…

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Spam mail – How to get mastery over it.

A mail administrator’s worst nightmare is spam. For a person tasked with ensuring users can send emails to recipients inboxes and ensure the users themselves don’t get junk email, when…

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How to create a perfect Mail Server using CWP

Normally, when we send emails, we expect them to reach within a few seconds to the recipient’s inbox. However, it is not obvious that your email reaches your recipients inbox….

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