Sysadmin

This brief guide explains what is nested virtualization and how to enable nested virtualization in Proxmox VE.

This guide talks about Quickgui, a graphical frontend for Quickemu to easily create, run and manage virtual machines in Linux.

This guide explains what is Quickemu and how to create and run Linux, macOS and Windows desktop virtual machines with Quickemu in Linux.

This guide explains how to install Docker Engine with Docker Compose in RHEL-based systems such as AlmaLinux, CentOS, and Rocky Linux.

This tutorial explains what Ansible facts are, and how to gather system information i.e facts in Ansible playbooks.

Fedora 36 has been released! If you’re already using Fedora 35, you can now safely upgrade to Fedora 36 desktop or server edition.

This detailed guide explains what are variables in Ansible and how to use variables in ansible playbooks with relevant examples in Linux.

In this guide, we will discuss what is Ansible debug module, what are the supported parameters in debug module and finally how to use the debug module with each parameter in Ansible playbooks with examples in Linux.

This guide explains how key-based and password authentication works in Ansible and also how privilege escalation works in Ansible.

In this guide, we will discuss what is Shadow password file and its purpose in Linux. Then, we will discuss various commands to find all user accounts that has no password in Linux. Finally, we will see how to set password to an user and how to lock and unlock user accounts in Linux.