Portfolio© 2025
PortfolioA developer-centric guide to understanding Kubernetes concepts and deploying your first application.
Kubernetes (K8s) can be intimidating. It has a steep learning curve and a vast ecosystem. But for developers, understanding the core concepts of K8s is becoming increasingly important. It's not just for Ops teams anymore; it's the platform where your code lives.
At the heart of K8s is the Pod, the smallest deployable unit. But you rarely manage Pods directly. Instead, you use Deployments to describe the desired state of your application—how many replicas you want, what image to use, and how to update it.
How do users access your application? Services provide a stable internal IP address for your Pods, while Ingress manages external access, handling routing, SSL termination, and load balancing.
Hardcoding configuration is a bad practice. K8s provides ConfigMaps for non-sensitive configuration and Secrets for sensitive data like passwords and API keys. These can be injected into your Pods as environment variables or files.
Mastering these basics will give you the confidence to deploy and manage your applications on Kubernetes, bridging the gap between development and operations.