The Complete Ansible Tutorial: Concepts, Architecture, Playbooks, and Real-World Examples
Here is a comprehensive, professional-quality Ansible tutorial based on your notes, structured as a long-form guide. Every topic, term, and example is included, with deep explanations and…
Docker Tutorials: Docker Image – Understanding Dockerfiles instructions & options
Here’s a step-by-step tutorial for Dockerfile, including explanations and examples for each major command. Dockerfile Tutorial A Dockerfile is a text file containing instructions to build a…
Docker Tutorials: Docker Image – Example and Sample Programs of Dockerfile
Reference Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at…
Docker Tutorials: Installation and Configurations
Docker Installation in Centos/RHEL Method -1: How to install Docker Community Edition via YUM? Step 1 – Install required packages. yum-utils provides the yum-config-manager utility, and device-mapper-persistent-data…
Openshift: How to configure Azure openshift ARO with Custom Domain
Step-by-Step Guide: Configuring Azure Red Hat OpenShift (ARO) with a Custom Domain Setting up a custom domain for your ARO cluster involves both Azure and DNS provider…
Openshift: Lab 10 – View performance information using the OpenShift web console
Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…
Openshift: How to add Helm Repository in Openshift
Adding a Helm repository in OpenShift is a common step to manage and deploy Helm charts in your OpenShift cluster. OpenShift supports Helm CLI out of the…
Openshift: Lab 9 – Work with databases in the OpenShift web console
Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…
Openshift: Lab 8 – Work with databases in OpenShift using the oc CLI tool
In this lesson, you will learn how to create an instance of a database in the Developer Sandbox using the oc CLI tool, and ultimately bind a Node.js application to that database. What…
Openshift: Lab 7 – Scale applications using the oc CLI tool
Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…
Openshift: Lab 6 – Scale applications using the OpenShift web console
Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…
Openshift: Lab 5 – Install an application from a source code using the oc CLI tool
Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…
Openshift: Lab 4 – Install an application from a Linux container image using the oc CLI tool
Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…
Openshift: Lab 3 – Install an application from a Linux container image repository using the OpenShift web console
Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…
Openshift: Lab 2 – Install an application from source code in a GitHub repository using the OpenShift web console
Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…
Openshift: Lab 1 – Use the terminal window within the Red Hat OpenShift web console
In this lesson, you will learn how to access the terminal window within the Red Hat OpenShift web console and use it to work with various OpenShift…
Openshift: Lab 14 – Setting up and using OpenShift Serverless Functions
Manual – https://docs.redhat.com/en/documentation/red_hat_openshift_serverless/1.30/html/functions/index OpenShift Serverless Function is a feature of Red Hat OpenShift that enables you to build, deploy, and manage event-driven serverless workloads using the Function-as-a-Service…
Openshift: Top oc Commands
Absolutely! Here’s a comprehensive list of the Top 100 most frequently used oc (OpenShift CLI) commands, with a quick explanation for each. This will help you navigate…
How to Streamline Financial Operations for Business Growth
Efficient financial operations are essential to running and scaling a successful business. Managing cash flow, forecasting budgets, and simplifying transactions are all critical areas where improved systems…
Openshift: Lab 12 – Build your application from a container image
In this lesson, you will: Build the application from a container image To build your application from a container image, switch to the Developer view in your OpenShift dashboard…
Openshift: Lab 11 – Build your application from source code
In this lesson, you will: Get that cluster Once you’ve secured your own cluster, select Start using your sandbox to begin your future (Figure 1). Build the application from…
Openshift: Lab 13 – How to deploy a Java application on Kubernetes
Prerequisites What you will learn In this learning path, you will: How long will this learning path take? In this lesson, you will: Creating the deployment The Pet…
Kubernetes: Working with ReplicationController
A ReplicationController is a Kubernetes controller that ensures that a specified number of pod replicas are running at any one time. In other words, a ReplicationController makes…
Complete List of Methods to Deploy Kubernetes
There are many ways to deploy Kubernetes, depending on your needs (learning, production, cloud-native, on-premises, bare metal, multi-cloud, etc). Here’s a structured list of the main ways…
List of Popular Light Apps for Schedule Appointment and Calendar Management Online Websites
Based on comprehensive research, here’s a curated list of the most popular and lightweight appointment scheduling and calendar management applications and websites in 2026: Free and Light…
Docker Tutorials: How to Install Docker in Ubuntu?
Install Docker Engine in Ubuntu NOTE – All commands you must run as root user or add a current user into a linux group name called “docker”…
How to Login to Linux Server using Putty?
Download Putty Source – https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html Direct Link of Putty – https://the.earth.li/~sgtatham/putty/latest/w64/putty.exe Open Putty and Add IP address & using Password Open Putty and Add IP address and…
Kubernetes: Deploying AWS Load Balancer Controller with Terraform
Absolutely, deploying the AWS Load Balancer Controller (ALB Controller) in production via Terraform is now a very common, robust, and recommended practice. There are official Terraform modules…
Difference between AWS Load Balancer Controller Vs Kubernetes Gateway API Controller for AWS VPC Lattice
AWS Load Balancer Controller vs Kubernetes Gateway API Controller for AWS VPC Lattice Overview Table Feature AWS Load Balancer Controller Kubernetes Gateway API Controller for VPC Lattice…
Google Vertex AI API
Google Vertex AI API is the main cloud API provided by Google Cloud for building, deploying, and managing machine learning (ML) and generative AI models at scale….