Search Results for: kubernetes

Modern software infrastructure is evolving rapidly. Applications that once ran on a single server are now distributed across multiple environments, services, and regions. As businesses scale their digital platforms, managing infrastructure manually becomes increasingly complex. This is where Kubernetes enters the conversation.  Many tech leaders explore Kubernetes when building scalable systems. However, a common question…

Both Docker and Kubernetes (K8s) provide containerization services in the application development and deployment lifecycles, but they serve different functions. Docker is ideal for building and running a single container, while Kubernetes is suitable for scaling and managing containerized applications across multiple machine clusters. A container is typically an image file consisting of the tools,…

Securing a Kubernetes cluster is very different from securing a traditional server. When you move to containers, the “surface area” for an attack changes. You aren’t just looking at a firewall anymore; you are looking at the container image, the code inside it, the way the pod talks to other pods, and how the underlying…

The engineering landscape has shifted dramatically over the last few years. The days of monolithic applications and manual “over-the-fence” deployments are gone. If you want to survive and thrive as a software engineer today, you need to master container orchestration. Kubernetes is no longer an optional skill; it is the fundamental infrastructure layer for modern,…

Containerization has completely changed how we build, deploy, and manage software. At the heart of this shift is Kubernetes. It is the gold standard for container orchestration. For years, I have seen infrastructure move from racks in a basement to dynamic, code-driven cloud environments. Kubernetes is the tool driving that change. If you are a…

In the world of modern infrastructure, Kubernetes has become the standard. Whether you are managing a small startup’s microservices or a massive global enterprise’s data center, Kubernetes is likely the engine under the hood. For working engineers and managers in India and across the globe, staying relevant means mastering container orchestration. The Certified Kubernetes Administrator…

1. What are finalizers, really? When you delete a Kubernetes object (CRD, Namespace, Pod, etc.), Kubernetes does not delete it immediately. Instead it: A finalizer is just a string tag like: It means: “Before you remove this object from etcd, call the controller that owns this finalizer so it can clean stuff up (external state,…

Comparing KEDA, HPA, VPA & Custom Adapters for Real-World Scaling with Cost, Complexity & Best Practices Category KEDA (Event-driven) Prometheus-based (Adapter/HPA) Datadog-based (Cluster Agent) CloudWatch-based (Adapter/HPA) Primary Function Event-driven autoscaler (creates HPAs dynamically from external metrics like ALB, SQS, Kafka, etc.) Uses HPA with Prometheus metrics via adapter (e.g., kube-metrics-adapter or prometheus-adapter) Uses Datadog metrics…

What is an IngressGroup (and why it matters) IngressGroup lets you share a single ALB across multiple Ingress objects (even across different namespaces). The controller merges all rules from Ingresses with the same alb.ingress.kubernetes.io/group.name onto one ALB; you can also control rule priority with alb.ingress.kubernetes.io/group.order. This reduces cost and operational sprawl while keeping teams free…

Let’s build a tiny but real Kubernetes Operator end-to-end for Kubernetes 1.29. We’ll do it the “standard” way (Go + controller-runtime) using Operator SDK (which wraps Kubebuilder) and pin versions that are known to work well with v1.29. I’ll show you how to develop, build, and deploy, with complete example code. Heads-up: Kubernetes v1.29 is…