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Kubernetes (K8)

Kubernetes (K8s) is an open-source container orchestration platform for automating deployment, scaling, and management of containerized workloads and services (infrastructure automation).

  • Container scheduling, placement, and lifecycle management across clusters (container orchestration)
  • Service discovery, load balancing, and traffic routing for containerized applications (networking)
  • Declarative configuration and desired-state management using manifests and APIs (configuration management)
  • Horizontal scaling, self-healing, and rollout/rollback of applications (platform operations)
  • Extensible architecture with pluggable networking, storage, and policy through APIs and controllers (platform extensibility)

More About Kubernetes (K8)

Kubernetes is an open-source system for automating deployment, scaling, and management of containerized applications (container orchestration). It is hosted as a graduated project under the Cloud Native Computing Foundation (CNCF) and provides a consistent control plane for running workloads across on-premises (on-prem) infrastructure and multiple cloud environments (infrastructure automation).

The platform uses a declarative model in which users describe the desired state of applications and infrastructure using Kubernetes Application Programming Interface (API) objects such as Pods, Deployments, DaemonSets, StatefulSets, Jobs, and Services (configuration management). A control plane composed of components such as the API server, scheduler, controller manager, and etcd continuously reconciles the actual cluster state to match the declared configuration (platform operations). Worker nodes run kubelet agents and container runtimes to host application Pods.

Kubernetes supports internal and external service exposure through Services, Ingress, and associated load balancing primitives (networking). It integrates with Container Network Interface (CNI) plugins for cluster networking and with various storage systems via Container Storage Interface (CSI) drivers (network integration). Built-in mechanisms include ConfigMaps and Secrets for configuration and credential distribution, and namespaces, resource quotas, and limit ranges for multi-tenant resource governance (governance and configuration management).

Enterprises use Kubernetes as a base layer for platform engineering, application platforms, and multi-tenant clusters (platform infrastructure). Typical usage patterns include running stateless and stateful microservices, batch processing, and data workloads. Features such as Horizontal Pod Autoscaler, vertical and cluster autoscaling integrations, liveness and readiness probes, and rolling updates support workload resilience, scaling, and change management (platform operations).

Kubernetes exposes an HTTP-based API and an extensible resource model that enables custom controllers, Custom Resource Definitions (CRDs), admission webhooks, and operators (platform extensibility). This extensibility underpins an ecosystem of add-ons for observability, policy, networking, storage, and security (observability, security, networking, storage). Kubernetes is positioned in enterprise environments as a control plane for containers and cloud-native workloads, often integrated with Continuous Integration and Continuous Deployment (CI/CD) pipelines, identity providers, and Infrastructure-as-Code (IaC) systems (infrastructure automation).