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CBT Nuggets

DevOps & Platform · Advanced

Kubernetes

Kubernetes is an open-source platform that runs and manages containerized applications across a cluster of machines. It schedules pods (one or more containers) onto worker nodes and keeps them running according to declarative manifests.

For IT leaders

Kubernetes is now table stakes for platform teams; investing in shared platform engineering reduces every product team's time-to-production.

Why IT teams care

Where this shows up at the team level

  • Cluster operations, RBAC, network policy, and upgrade cycles need a defined ownership team.
  • Audit and compliance bring new questions for Kubernetes (admission control, image scanning, secrets management).
  • Hiring and retention pressure rises when only one engineer can debug production clusters.

In production

Where teams encounter it

  • Managed Kubernetes services (EKS, AKS, GKE)
  • Self-managed clusters on VMs or bare metal
  • Service meshes, ingress controllers, and platform tooling layered on top

How it works

How Kubernetes actually works

  1. 01The control plane (API server, scheduler, controller manager, etcd) accepts declarative manifests and reconciles cluster state.
  2. 02Pods run on worker nodes; deployments, statefulsets, and daemonsets manage replicas and lifecycles.
  3. 03Services and ingress provide stable network identity and external entry points; CNI plugins handle pod networking.
  4. 04Operators and Helm charts let teams package and deploy applications declaratively.

In practice

Common team use cases

  • Running stateless and stateful microservices at scale
  • Standardizing CI/CD pipelines and environment parity
  • Hosting internal developer platforms

Build the capability

Each link routes to a hub that goes deeper than this definition.

Close the team gap

Turn this concept into team capability

CBT Nuggets builds expert-led team training that closes the gaps definitions only describe. Talk to sales about a plan that fits your team.