Linux is a powerful, open-source operating system known for its stability, security, and flexibility, widely used in servers, development, and embedded systems
Postfix is an open-source mail server released under IBM in 1998. Furthermore, it helps to route traffic between various mail servers across the internet. It is still in use because Postfix strives to be fast, uncomplicated, and trustworthy. To run a mail-in Linux, we need to understand servers’ separate roles in an email configuration. The…
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If you have used Fedora before, I didn’t entirely surprise you, but for Centos or RHEL users, DNF (Dandified Yum) is an updated and better version of yum. DNF is a software package manager for Red Hat Package Management -based Linux distro that installs, updates, and removes packages. In this guide, we shall discuss the…
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In this article, we shall discuss Installing LXC/LXD for container management. You can’t talk about this without referring to Canonical, the company behind Ubuntu. This is because Canonical built upon the architecture of LXC for LXD. It will shock you to know that Docker is also built upon the technology of LXC, but that will…
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Before discussing this, I would briefly like to touch on PAM (Pluggable Authentication Module) in Linux. PAM helps us to authenticate. Meanwhile, authentication is used by programs that provide users access to a system to be able to determine their identities. In Linux, especially centos and RedHat, many programs undergo configuration to make authentication possible…
Read More “How to configure user resource limits and restrictions in Linux” »
A source file is a file that is written in the C programming language. In this post, I will be pointing you to the steps to take to be able to use software downloaded from a source file. Although we might not run into situations where we work with source files. But just in case…
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RPort is a Remote Management (RMM) Software that immediately boosts the efficiency of IT teams and MSPs by giving them the tools to manage all their IT systems – from one simple, intuitive interface, from anywhere. In this article, I will show you how to work with “RPORT the free and open source remote management…
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Having talked about How to create, edit, save a file and quit Vim Editor in Linux, and related topics such as A brief Introduction to Linux and how to create disk partition in Ubuntu Linux, and Locate, Find, and Grep: How to search for files and patterns in Linux/Unix-like OS, it’s also very important to…
Read More “Read-only Files: Saving Files in VIM Editor on Linux/Unix-like OS” »
A shell script is a text file that contains a series of commands in plain text. It executes the commands in the text beginning with the one at the top, one line at a time until every of the command has been successfully executed. What’s more, executing a shell script will give you the same…
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Let us imagine a scenario where you host lots of applications, especially third-party applications, and multiple people access your system, and not just that you run hundreds of servers. Here’s a guide on how to locate directory file context. Please check how to set up SELinux on a Linux server and other related guides such…
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In the previous tutorial, we deployed AWX. Kindly view the tutorial on Ansible AWX. Now we will use AWX to deploy a simple playbook and show how to run, schedule, and manage jobs from the AWX console. Kindly check out some of my other guides: Openstack Deployment with Devstack, Deploying a load balancer from scratch and adding…
Read More “Using Awx to deploy, schedule and run playbooks” »
Have you been trying to work with Apache and your computer won’t let you download anything related to Apache because there are no more mirrors to try? Then you are in the right place. This article explains how to solve Errno 256. Other guides can be found from these links: Setting-up-SElinux-on-a-Linux-server, Group Policy Settings for…
I had to write this from personal experience based on the issues I had with my machine, so if you have centos7 installed on VMWare Workstation Pro, I know that at some point in time you will experience this or it has probably happened already. In this article, I will walk you through how to…
Read More “How to solve cannot find a valid base URL for repo: base/7/x86_64” »
In Today’s tutorial, we will be installing ansible Awx (Ansible web executable). This is an open-source project that allows you to manage and control your ansible project easily from a web interface with a task engine that is built on ansible. We will be installing AWX on centos 8 servers with 4GB RAM with Epel…
