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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 Landmark, stock market…
Read more »Practical Writing Tips DevOps Professionals and Students Can Use to Improve Technical Writing
Introduction In DevOps, technical skills like automation, coding, and system design often get the spotlight. However, one essential skill is often underestimated: writing. Professionals and students entering the field may…
Read more »VPNs vs. Surveillance: Why Encrypted Connections Matter for Everyday Users
In today’s world, digital surveillance blankets the online lives of many. Encrypted connections have become crucial, not just a luxury. For those who cherish internet freedom, understanding online privacy is…
Read more »List of all Job Roles, Job Titles in Software and IT Companies
The software and IT industry is home to a diverse array of job roles and titles, reflecting the dynamic and ever-evolving nature of technology. From core technical positions like Software…
Read more »Kubernetes PersistentVolume, PersistentVolumeClaim, volume using hostPath
pv.yaml $ kubectl create -f pv.yaml $ kubectl get pv pvc.yaml $ kubectl create -f pvc.yaml $ kubectl get pvc pod.yaml Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge…
Read more »The Top 3 Benefits of Microsoft Power BI Training
Does Microsoft Power BI training actually make you a more effective and valuable professional, or is it just another tool you never use properly? The truth is, if you learn…
Read more »The Critical Role of Database Administration, Cybersecurity, and Vulnerability Assessment
The year 2025 is shaping up to be a defining moment for digital enterprises. As organizations scale into cloud-native, AI-driven, and globally distributed ecosystems, they face a dual challenge: how…
Read more »Calm DevOps: Small Habits, Safer Systems
There’s a quiet, practical side to DevOps that rarely makes conference slides.It’s the point where you clearly designate alert rules, get rid of flaky jobs, and build runbooks that even…
Read more »How to Validate UPI & Paytm Payment QR Codes Programmatically (Step-by-Step Guide
Great question. You can validate “payment QR codes” at two levels: Below is a practical, copy-pasteable approach you can drop into your stack (PHP/Laravel, plus quick Node/Python snippets). 1) What…
Read more »Best Data Masking Tools in 2025
For many businesses, data masking is vital. In addition to creating anonymized, yet realistic, datasets that can be used in testing, development, or employee training processes, it also protects an…
Read more »Understanding USDT Networks and the Role of Deflationary Tokens in 2025
As the cryptocurrency ecosystem matures, stablecoins like USDT (Tether) remain foundational to digital finance. Used for trading, remittances, and DeFi, USDT operates across multiple blockchain networks. At the same time,…
Read more »Crypto Payment Processors vs. Gateways: What’s the Difference and Why It Matters
Accepting cryptocurrency used to be a moon-shot experiment; today it is a line item on the payments roadmap of every forward-thinking merchant. Yet as soon as you Google “accept crypto…
Read more »From Good to Great: How to Evaluate and Improve Essay Quality
Every engineer knows the power of iteration: small, deliberate improvements over time turn a decent deployment into a rock-solid release. The same principle transforms a good essay into a great…
Read more »Technology and Beyond: Learning, Culture, and Digital Growth
Technology has transformed how we learn, communicate, and grow. But what makes this era unique is how technology blends with culture, finance, and knowledge-sharing. Exploring a range of digital platforms…
Read more »Exploring Technology and Beyond: Insights, Ideas, and Inspirations
Technology today is more than just tools and code—it’s about innovation, communication, and the ways it impacts every part of our lives. From personal reflections to corporate ventures, from emails…
Read more »Embracing the Future of Technology: Training, Certifications, and Digital Transformation
Technology continues to redefine how we work, communicate, and deliver value. From DevOps to MLOps, from healthcare tech platforms to blogging strategies, the modern digital ecosystem is full of opportunities…
Read more »Building a Future in Technology: Training, Certifications, and DevOps Mastery
The technology industry is evolving at an unprecedented pace, demanding professionals to stay updated with modern tools, practices, and certifications. Whether it’s Kubernetes orchestration, DevOps culture, GitOps automation, or configuration…
Read more »Mastering Technology Through DevOps & Modern Tool Training
Technology is constantly evolving—and so are the skills needed to thrive in today’s competitive IT landscape. From cloud-native applications to DevOps pipelines, from containerization to automation, the demand for specialized…
Read more »Exploring the Future of Technology: DevOps, Consulting, Training, and Freelancing
Technology is not just shaping our future—it is the future. From automation to cloud computing, DevOps practices to agile consulting, businesses today are navigating a digital transformation that demands speed,…
Read more »Navigating the World of DevOps & Agile: Training, Certification, and Best Practices
In today’s fast-moving tech landscape, staying ahead means mastering not just what you build, but how you build it. Agile, DevOps, SRE (Site Reliability Engineering), and robust Build & Release…
Read more »Databricks: Hello world AI Code
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 Landmark, stock market…
Read more »Top Background Check Company in the world
1. What is Background Check of Employee? An Employee Background Check is the process of verifying the personal, educational, professional, and sometimes criminal history of a potential or current employee….
Read more »Appdynamics: Users, Group, Roles Administration
1. Users Use case: Add your DevOps engineers, SREs, or business analysts as users with the right permissions. 2. API Clients Use case: When Jenkins, Ansible, or Terraform needs to…
Read more »Appdynamics: Dashboard and Dash Studio
In AppDynamics, both Dashboard and Dash Studio are used to visualize application performance and monitoring data, but they differ in features, flexibility, and intended use cases: 1. Dashboards (Classic Dashboard)…
Read more »Becoming an Avionics Technician: Services, Features & Pathways
In today’s aviation environment, cutting-edge electronics are at the heart of safety, navigation, communication, and even passenger experience. The Avionics Technician page by Astronaut & Pilot offers a clear and…
Read more »AWS: Route53 a Complete Guide for Domain work
I’ll show console + CLI where useful and give a quick troubleshooting section at the end. 0) Prereqs 1) Create a public hosted zone for rajesh.com Console Route 53 →…
Read more »Kubernetes: Setting up OIDC (Amazon Cognito) + ALB Ingress + gRPC (EKS)
Below is a complete, copy-pasteable, step-by-step guide to put OIDC (Amazon Cognito) + ALB Ingress + gRPC (EKS) behind your DNS with TLS. I’ve included all commands, manifests, and verification…
Read more »GitHub Self-Hosted Runners – FAQ
Here’s a GitHub Self-Hosted Runners FAQ you can use as a quick reference or to share with your team: GitHub Self-Hosted Runners – FAQ 1. What is a self-hosted runner?…
Read more »Appdynamics: Lab – Create a Sample Load for APM in petclinic App using Jmeter
Here’s the exact JMeter setup to create Owners athttp://43.204.220.89:8080/petclinic/owners/new. Thread Group (your load) Config Elements Samplers & Post-Processors 1) GET form page (fetch cookies and optional CSRF) Sampler: HTTP Request…
Read more »Appdynamics: Complete Guide for Appdynamics Alert
Step-by-step guide to set up and work with alerts in AppDynamics (the screen you shared is the Alert & Respond → Policies page). 0) How AppDynamics alerts are wired You’ll…
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