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Kubernetes Basics: How to Deploy a Local App to Production Using K8s

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Kubernetes is an open-source container orchestration platform that automatically manages application availability by maintaining a user-defined desired state. Developers describe their system configuration in YAML files, specifying details such as replica count, container images, and network ports, and Kubernetes continuously works to match the actual cluster state to those specifications. Core building blocks include Pods, Deployments, Services, and Ingress, which together handle container lifecycle, load balancing, and external traffic routing. A simple Node.js API can be containerized with Docker, pushed to a registry, and deployed on a local Kind cluster using a Deployment manifest that enforces resource limits and prevents unintended image pulls. This approach allows developers to move beyond manual container management and achieve basic high-availability setups with version-controlled infrastructure.

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