Kubernetes

Kubernetes is an open-source platform for automating deployment, scaling, and management of containerized applications.

What is Kubernetes?

Kubernetes (K8s) is an open-source container orchestration platform originally developed by Google. It automates the deployment, scaling, and management of containerized applications across clusters of hosts.

Kubernetes Objects

Pod: Smallest deployable unit, one or more containers
Deployment: Manages ReplicaSets and pod updates
Service: Network abstraction for pod access
ConfigMap/Secret: Configuration and sensitive data
Namespace: Resource isolation and multi-tenancy

Kubernetes Architecture

Control plane components (API Server, Scheduler, Controller Manager, etcd) manage the cluster, while worker nodes run application workloads using kubelet and container runtime.

Common Misconceptions

"Kubernetes is only for large scale" - Benefits any containerized workload
"Kubernetes replaces Docker" - Kubernetes orchestrates containers
"Kubernetes is simple" - Significant learning curve