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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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How to Repair Linux File-system Issues at Boot 0
- Best Practices & Patterns, Linux Basics, System Administration, Troubleshooting
- June 3, 2025
File-system issues can cause a Linux system, such as Red Hat Enterprise Linux, to fail during boot, leading to system downtime and operational disruption. This guide provides step-by-step instructions on detecting, troubleshooting, and repairing common file-system problems encountered during boot.
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Configuring OpenShift as a Deployment Target from GitLab CI/CD 0
- CI/CD Pipelines, Configuration Management, Containers & Docker, DevOps Tools, Job Automation, Linux Basics, System Administration, Version Control (Git), Virtualization, Web Servers
- May 29, 2025
This content outlines the integration of GitLab CI/CD with OpenShift for deploying containerized applications. It discusses prerequisites, initial setup, service accounts, CI/CD variables, and pipeline configuration. Security best practices are emphasized to ensure safe deployment processes. An example demonstrates deploying a Node.js app, highlighting continuous delivery benefits.
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How to Set Up a CI/CD Pipeline with GitHub Actions (Node.js Example)0
- CI/CD Pipelines, Cloud Platforms, Configuration Management, Containers & Docker, DevOps Tools, Linux Basics, Shell Scripting, System Administration, Version Control (Git)
- May 29, 2025
Introduction to CI/CD and GitHub Actions Continuous Integration and Continuous Delivery (CI/CD) is a DevOps practice that automates the build, test, and deployment of code whenever changes are pushed to a repository. In simple terms, Continuous Integration (CI) means new code changes are automatically tested (and often merged), ensuring that integration issues are caught early, while Continuous
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How to Troubleshoot and Recover a Linux System That Won’t Boot 0
- Configuration Management, Linux Basics, Security & Hardening, System Administration, Web Servers
- May 29, 2025
When a Linux system refuses to boot, it can be daunting – but a methodical approach will often get you back up and running. This guide provides step-by-step troubleshooting for common boot issues on Ubuntu, CentOS, and RHEL, suitable for intermediate Linux users. We’ll cover preliminary checks (like hardware and BIOS/UEFI settings), using recovery
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How to Reset a Forgotten Root Password on RHEL/CentOS 0
- Best Practices & Patterns, Configuration Management, Linux Basics, System Administration, Virtualization, Web Servers
- May 28, 2025
Losing or forgetting a root password can occur for various reasons. This guide outlines how to reset the root password on RHEL/CentOS using GRUB bootloader, including steps to enhance security afterward.
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Deploying a Containerized Frontend Web Application on OpenShift (On-Premises) with CI/CD Pipelines 0
- CI/CD Pipelines, Containers & Docker, DevOps Tools, Kubernetes, Linux Basics
- May 26, 2025
In this article, we covered the end-to-end process of deploying a containerized frontend web application on an on-premises OpenShift cluster, using both the oc CLI and the OpenShift web console
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