What is GitHub App Installation Token?
A GitHub App Installation Token is a short-lived access token that allows a GitHub App to interact with specific repositories or organizations where it has been installed…
What is a GitHub App?
🧠 What is a GitHub App? A GitHub App is a first-class actor in the GitHub ecosystem. Unlike OAuth apps which act on behalf of a user,…
What is Google Cloud NAT?
🚀 What is Google Cloud NAT? Google Cloud NAT (Network Address Translation) is a fully managed service that enables outbound internet connectivity for resources in private Google…
Troubleshooting Guide to Resolving 500 Errors in Kubernetes Production Environments
Source – https://github.com/rajeshkumarin/k8s-500-prod-issues 📘 Scenario #1: Zombie Pods Causing NodeDrain to HangCategory: Cluster ManagementEnvironment: K8s v1.23, On-prem bare metal, Systemd cgroupsScenario Summary: Node drain stuck indefinitely due…
What is Google Cloud CDN?
📌 What is Google Cloud CDN? Google Cloud CDN is a globally distributed content delivery network that accelerates the delivery of your web and media content by…
How to Assign a Static IP to a Docker Container in Bridge Mode
In this guide, you’ll learn how to assign a static IP address to a Docker container using a custom bridge network. This IP address will remain fixed…
Openshift Tutorials for DeploymentConfigs
OpenShift DeploymentConfigs are a core resource in OpenShift used to manage the deployment and lifecycle of applications. While Kubernetes uses Deployments to manage the rolling updates of…
How SSL/TLS Certificates Work: Setup & Manual Renewal using acme.sh
Here’s a well-structured and comprehensive tutorial based on your notes, with added explanations, examples, and a professional tone suitable for blog publication or internal documentation. 📜 SSL/TLS…
Openshift Admin: How to add node to the cluster in openshift Local
To add a node to an OpenShift cluster running locally using OpenShift Local (previously known as CodeReady Containers or CRC), the process involves configuring a multi-node cluster…
Openshift Admin: How to add node to the cluster in openshift ARO
New Method : How to Add Nodes to ARO (Worker Node Scaling) If you are using the latest ARO architecture, which now uses Azure Machine Pools (based…
What are Security Context Constraints (SCC) in OpenShift?
🔐 What are Security Context Constraints (SCC) in OpenShift? Security Context Constraints (SCC) are OpenShift’s mechanism for controlling security-sensitive aspects of how containers run in the cluster….
OpenShift-Supported Container Images Registry
OpenShift provides officially supported container images that are fully compliant with its security and operational requirements. These images are designed to run smoothly on OpenShift with non-root…
Terraform tfenv Tutorial: From Basic to Advanced
What is tfenv? tfenv is a Terraform version manager that allows you to easily install and manage multiple versions of Terraform on your system. You can switch…
Comprehensive Guide to DNSControl
Comprehensive Guide to DNSControl Table of Contents 1. Introduction to DNSControl DNSControl is an open-source tool developed by Stack Exchange to manage DNS zones across multiple providers…
OpenShift Container Platform (OCP) Installation and Configuration Guide
# Deployment Method Platform/Infra Best Use Case Automation Level Notes 1 IPI (Installer-Provisioned Infra) AWS, Azure, GCP, vSphere Fast, full-stack automated production setup ✅ Fully automated Installer…
OpenShift Install & Configurations using Azure Red Hat OpenShift (ARO) with Azure Portal
Here is the latest step-by-step guide (as of May 2026) to install and configure OpenShift using Azure Red Hat OpenShift (ARO) directly from the Azure Portal. ☁️…
OpenShift Install & Configurations using OpenShift Local in Linux laptops/desktops
Here is the correct and updated step-by-step guide to install and configure OpenShift Local (formerly CRC – CodeReady Containers) on Linux laptops/desktops for local development and testing….
OpenShift Install & Configurations using OpenShift Local in MacOS laptops/desktops
Here is the step-by-step guide to correctly install and configure OpenShift Local (CRC) on macOS laptops or desktops for local OpenShift 4.x development. 🍎 OpenShift Local on…
About Elastic (The Company)
Certainly! Here’s a detailed overview of Elastic N.V. (commonly known as Elastic, the company behind Elasticsearch), covering its transformation, history, key milestones, product evolution, and major release…
How to install kibana and configure with Elasticsearch
Download & Extract kibana 8.x Configure kibana 8.x Download, Extract, Install and Configure kibana 9.x vi config/kibana.yml ./bin/kibana –allow-root Provide Enrollment Kye of ElasticSearch Login to Kibana…
How AI Solvers Are Changing the Way We Study for Exams
Almost every industry is being transformed by artificial intelligence (AI): transportation, healthcare, education, among others. AI applications in the field of education are affecting the way a…
The Rise of AI Detection: Are Plagiarism Checkers Keeping Up?
Photo by Glenn Carstens-Peters from Unsplash.com It’s no secret that artificial intelligence has completely shaken up how we write, learn, and share ideas. With tools like ChatGPT,…
DNS concepts
📘 1. Basics of DNS What Is DNS? The Domain Name System (DNS) is the Internet’s phonebook. It translates human-friendly domain names (like www.example.com) into IP addresses…
Managing MariaDB Root Password and Connection Behavior in XAMPP (Ubuntu)
☁️ Introduction When working with MariaDB/MySQL inside XAMPP on Ubuntu, many developers face confusing issues related to root password behavior, localhost vs 127.0.0.1 access, and authentication plugins.This…
Comprehensive Tutorial on Cloud Storage
📖 1. What is Cloud Storage? Cloud Storage refers to the service model where data is stored, managed, and accessed remotely over the internet instead of being…
Top 10 Infrastructure Monitoring Tools
Introduction As a network grows, finding and ensuring the Best IT Infrastructure Monitoring Tools and Software for your Business is critical in today’s complex and ever-growing eco-system…
Top 10 Release Management Tools in 2024
What is Release? A release represents a number of activities in a certain time period, with people working on them What is release management? Release management is…
An introduction of Laravel Boilerplate
Laravel Boilerplate is a comprehensive starter kit designed to accelerate the development of Laravel applications by providing a robust foundation with pre-integrated features. Developed by Rappasoft, it…
OpenShift 4 Advance Training (Administrator & Developer)
🚀 OpenShift 4 Advance Training (Administrator + Developer) 📌 Section 1: Why Learn OpenShift? OpenShift is the world’s leading Kubernetes platform, trusted by enterprises across industries for…
Dynatrace Sample Application for Demo and Lab using easyTravel & EasyTrade
easyTravel Demo Application in Docker This project builds and deploys the Dynatrace easyTravel demo application in Docker. All components are readily available on the Docker Hub.URL –…