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- Best Practices & Patterns, Linux Basics, Package Management, System Administration
- March 2, 2015
Migration Guide: CentOS 7 to Rocky Linux or AlmaLinux (Production Servers)

To maintain a secure and supported environment, organizations should migrate CentOS 7 servers to a supported enterprise Linux OS. Rocky Linux and AlmaLinux have emerged as the leading community-driven successors to CentOS, providing binary-compatible replacements for Red Hat Enterprise Linux (RHEL) without licensing costs.
- Best Practices & Patterns, Linux Basics, Package Management, System Administration
- November 22, 2014
Upgrading Ubuntu 22.04 LTS to Ubuntu 24.04 LTS: Step-by-Step Guide

Upgrading from Ubuntu 22.04 LTS to 24.04 LTS necessitates preparation, ensuring data backups and app compatibility. The guide outlines both GUI and CLI methods, emphasizing careful execution to minimize downtime and maintain system integrity during the upgrade.
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- Best Practices & Patterns, CI/CD Pipelines, Configuration Management, DevOps Tools
- August 5, 2014
Configuration Management in Linux

Configuration management automates Linux system setups, ensuring consistency, reducing errors, and streamlining infrastructure using tools like Ansible, Puppet, and SaltStack.

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Argo CD and GitOps: Setting Up Continuous Delivery on a Kubernetes Cluster 0
- CI/CD Pipelines, Containers & Docker, DevOps Tools, Job Automation, Kubernetes, Linux Basics, System Administration, Version Control (Git)
- June 10, 2025
Argo CD is an open-source GitOps continuous delivery tool for Kubernetes. In GitOps, all deployment manifests live in a Git repo as the source of truth. Argo CD continuously monitors the Git repo and the Kubernetes cluster, and automatically (or manually) syncs the live state to match the desired state in Git. It also provides a web-based UI to see “desired vs live” status of your applications. In this tutorial, we’ll install Argo CD on a local Minikube cluster, access the Argo CD web UI, and deploy a sample GitOps application (a simple NGINX example) from a public repository.
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Docker 101: How to Run Your First Container on Ubuntu 0
- Cloud Platforms, Containers & Docker, DevOps Tools, Kubernetes, Linux Basics, System Administration, Virtualization
- June 10, 2025
Docker lets you “ship code faster, standardize application operations, [and] seamlessly move code” to different machines. Official docs also remind us that Docker Engine runs on 64-bit Ubuntu (22.04 LTS “Jammy” or newer), so the steps below apply to Ubuntu 22.04 and later.
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Storage Management in RHEL/CentOS made Simpler (CLI Tools)1
- Best Practices & Patterns, Linux Basics, System Administration, Web Servers
- June 9, 2025
RHEL and CentOS provide powerful command-line tools for disk and storage management. To get started, identify existing disks and partitions using commands like lsblk (list block devices) or fdisk -l. For example, lsblk displays all disks and partitions in a clear tree view. The fdisk -l command reports disk sizes and partition tables; e.g., it might show a 30 GiB /dev/sda disk with /dev/sda2 marked as an LVM partition.
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Why CachyOS Could Be Your Next Linux Distro: Speed, Stability, and Gaming Performance 0
- Linux Basics
- June 7, 2025
If you’re on the hunt for a Linux distribution that combines the power of Arch Linux with user-friendly features and exceptional performance, look no further than CachyOS. Tailored for both newcomers and seasoned Linux enthusiasts, CachyOS offers a seamless blend of speed, stability, and gaming prowess.
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Installing and Using Shodan CLI on Linux: A Complete Walkthrough 0
- Linux Basics, Monitoring & Logging, Networking, Security & Hardening, System Administration, Troubleshooting, Web Servers
- June 7, 2025
Shodan is a powerful search engine designed to find internet-connected devices across the globe. It goes beyond conventional search engines by enabling the discovery of specific hardware and software configurations. This guide covers installing and effectively using Shodan’s Command-Line Interface (CLI) on Linux systems including Debian-based (like Ubuntu) and CentOS/RHEL.
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How to Investigate and Resolve SELinux Issues in Linux 0
- Best Practices & Patterns, Linux Basics, Security & Hardening, System Administration, Troubleshooting, Web Servers
- June 7, 2025
SELinux (Security-Enhanced Linux) is a powerful security feature of Red Hat Enterprise Linux and CentOS. It provides a mechanism to enforce mandatory access control policies. However, SELinux can occasionally block legitimate activities if misconfigured. Here’s how you can investigate and resolve SELinux issues effectively.
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