How to Use Linux dig Command (DNS Lookup)


dig (Domain Information Groper) command is a tool for querying DNS name servers. It is a helpful command for diagnosing DNS problems but is also used to display DNS information. Learn how to use this command by following this article.

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How to Change or Set Hostname on CentOS 8 / RHEL 8


If you decide to change your hostname, you have multiple available options to do so. Follow the methods in this guide and you will successfully change the hostname on your CentOS8 / RHEL machine.

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pfSense vs Sophos: The Main Differences


This article is meant to assist readers in determining whether pfSense or Sophos would better fit their system's requirements. It contains a clear and brief overview of pfSense and Sophos' characteristics.

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What is Kubernetes DaemonSet and How to Use It?


The article contains an in-depth analysis of DaemonSets and practical examples of how best to implement DaemonSets in a running Kubernetes environment.

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The Difference Between Backup vs Replication


This article briefly explains the concepts behind backup and replication. A clear-cut table provides an excellent overview of all the features that set them apart.

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Apache Hadoop Architecture Explained (with Diagrams)


Apache Hadoop is the go-to framework for storing and processing big data. This article provides clear-cut explanations, Hadoop architecture diagrams, and best practices for designing a Hadoop cluster.

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How to Use SSH Port Forwarding


This article demonstrates 3 distinct methods used to port forward SSH connections. It examines the syntax of the individual commands and teaches you everything you need to know to implement SSH port forwarding successfully.

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How to Fix “ssh_exchange_identification: read: Connection reset by peer” Error


This article deals with the most common causes of the "ssh_exchange_identification: read: Connection reset by peer" error. At the same time, we offer expert solutions for this error, such as managing Host-Based Access Control Lists, changing…

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How to Allow Remote Connections to MySQL


Keep your database servers separate from your public-facing web servers to improve security, performance, and flexibility. MySQL servers are initially set up to accept local connections. Use this tutorial to change these settings in the MySQL…

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How to Configure CentOS Network Settings


Configure CentOS network settings using the command line or the Network Manager TUI. This guide shows you how to change network specifications and set up a static IP or configure the network interface for DHCP.

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