Linux

Best CentOS Alternatives 2023

Are you looking for a CentOS alternative in 2023? If so, you’re in good company. Many people have been after CentOS alternatives in the last few years. This is largely due to changes made by RedHat for licensing and ongoing maintenance for CentOS. Those of you who are unfamiliar with CentOS should know that it

How to install cPanel on Ubuntu OS

Have you wanted to use cPanel with Ubuntu instead of CentOS? Now you can! Many users prefer to use Have you considered substituting Ubuntu for CentOS when using cPanel? Now you can! Due to its popularity and ease of use as a control panel for managing websites, cPanel is frequently chosen by customers. In the

Why does the Linux df command show 100% disk used even after deleting many GB of files?

Does this sound familiar? Your Linux file system is full, so you delete a large number of big files. However, when you check disk usage with df, the disk still shows up as being completely full. If this has happened to you, you’re not alone. Most systems administrators have experienced this at least once. Understanding

How to disable the php mail() function

Are you frustrated with random PHP scripts being able to send spam from your server? If so you’re not alone. Many website administrators have this problem with PHP scripts on their server, and it can be a time consuming game of whack a mole to deal with it. There are many reasons you’d want to

How to Configure Apache to use SNI to Host Multiple SSL Websites on One IP Address

In a previous article, we explored the question of whether SSL requires a dedicated IP address. We learned that, it is possible to host multiple SSL websites on a single IP address using a technology called Server Name Indication (SNI). With IP addresses becoming more expensive and scarce all the time, and SSL being all-but-mandatory

Copy Directory with SSH — Three Methods

As a server admin, even simple tasks can benefit from a fresh perspective. To that end, today’s article talks about multiple ways you can copy an entire directory and its contents in linux. To do so, we’ll be exploring three commands: cp, scp, and rsync. cp You can copy files and directories within the same

What is SWAP memory exactly? Swap and Ram explained.

Most sysadmins will have at least some familiarity with the idea of SWAP memory. However, even if you have come across it before, you might not know exactly what SWAP is, what it does, or how it works. In today’s article, we’ll be talking about SWAP memory in more detail to explain why it’s important

Server Restart via SSH — A simple command for a powerful task

As a sysadmin, one of the things you’ll need to do sooner than later is reboot a server via SSH.  Even though it’s easy to do once you figure out how, it’s importance makes it worth learning about. This operation can be essential for maintaining your server’s performance and reliability, assisting you in recovering from

How to configure IPv6 for SolusVM

At IOFLOOD, quite a lot of our customers run VPS hosting companies, so we try to be familiar with the technologies and control panels used for VPS hosting. We do this because we want to provide help when our customers face challenging server configuration issues. In today’s article, we’re going to discuss how to configure

Testing the network speed of your IOFLOOD.com server with iperf

With 10gbps and faster network ports becoming more common all the time, it is becoming increasingly important to make sure that a server can actually use all of that bandwidth. At these high speeds, many things can go wrong that limit your performance to less than the maximum speed of the port. The most important