Category: Systems

CentOS Linux

CentOS Linux & CentOS Stream

CentOS Linux was launched in 2004 and has been regularly updated until the discontinuation of CentOS 8 in 2021. Distributed under the GNU General Public License (GNU GPL), it stood out as a stable, predictable and easy to use Linux distribution, with a big community supporting it. CentOS is short for “Community Enterprise Operating System”.

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Containerization and containers orchestration

Containers, containerization systems and orchestrators

The terms “container” and “containerization” are borrowed from the shipping industry. While in the shipping industry containers are used to physically separate different cargoes, in IT, virtual containers package the code, config files, libraries and dependencies an application needs to run. A container is another form of virtualization, as virtual machines are, and Docker and

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SSH keys set up guide

Step-by-step guide to setting up SSH keys on a Linux server

Would you like to learn to set up SSH keys on a Linux server or to use public key authentication? We have created this step-by-step guide about how to set up SSH keys on a Linux server to improve security when establishing a remote connection. There are diverse alternatives to establish a remote and secure

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Types of hypervisors: bare-metal and hosted

Hypervisors: definition, types and open source and commercial solutions

Hypervisors are an essential part of the technology supporting cloud computing. There are two types of hypervisors — bare-metal and hosted, and numerous solutions in the market. In this post we are going to cover both types, including a list of well-known hypervisors — both commercial and open-source. But let’s start by defining what a

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Hyperconverged infrastructure or HCI

Hyperconvergence & Hyperconverged Infrastructure (HCI)

Hyperconvergence is an IT infrastructure aiming to reduce data center complexity. It does so by combining computing, storage and networking capabilities in a single system. In addition to reducing complexity, it allows to increase scalability, flexibility and IT efficiency. Hyperconvergence helps reduce costs while ensuring the necessary availability, reliability and performance. Hyperconverged systems act as

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30th anniversary of the first Linux release

Linux: from a hobby to a collaborative tech revolution

September 17th, 2021 is the 30th anniversary of Linux. Linux was first released as a free operating system kernel on September 17th, 1991. What started as “just a hobby” for Linus Torvalds became the kernel of the GNU OS and one of the world’s most important operating systems. Linux’s history from 1991 to 2021 Linus

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Legacy systems

What is a legacy system?

A legacy system is an old or out-dated system, technology or software application that continues to be used by an organization because it still performs the functions it was initially intended to do. Generally, legacy systems no longer have support and maintenance and they are limited in terms of growth. However, they cannot easily be

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95th percentile, metering method for bandwidth usage

What is the 95th percentile bandwidth metering method?

The 95th percentile bandwidth metering method, also known as “burstable billing”, is the most effective method used for metering and billing bandwidth usage. That is probably why it has become a standard among most Internet Service Providers (ISPs) worldwide. This flexible method avoids penalizing customers for data transfer peaks and helps providers reduce their infrastructure

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secure connection with VPN

What is a VPN, how does it work and what is it used for?

A VPN or Virtual Private Network provides online security, privacy and anonymity. It is an excellent tool for protecting daily digital activities, both business and personal. From something as simple as sending an email to connecting to the dashboard of your company’s cloud environment without it being accessible over the Internet. In this article, we

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