Kubernetes Interactive Learning

Browse by Category

13 focused categories following a learning path from foundations to extensibility.

Category	Pages	Use
Foundation Foundations Architecture, YAML, objects, Pod basics, and the mental model everything else builds on.	Architecture Control plane and worker nodes Objects Reference Quick object guide YAML for K8s (Part 1) Syntax, indentation, lists YAML for K8s (Part 2) Objects, labels, editing YAML for K8s (Part 3) Editors, validate, troubleshoot Pod Lifecycle Phases and restart behavior Pods vs Deployments Beginner transition model Workloads Concepts Pod and workload landscape Linux Cheat Sheet Ubuntu basics for K8s learners	Start here for onboarding, classroom introductions, and building the Kubernetes mental model.
Foundation Installation Cluster bootstrapping, local setup, and package management.	Kubernetes Installation Bootstrap and dependency flow Kind Local Cluster Learning-focused local setup Helm Charts Package manager and commands Kubeconfig & Contexts Multi-cluster switching and credentials	Use when setting up a cluster or learning deployment tooling.
Foundation Workload Management Controllers, rollout strategies, and all the ways Kubernetes runs containers.	Deployment Hierarchy Deployment to ReplicaSet to Pod ReplicaSet Scaling Replica count changes ReplicaSet vs DaemonSet Count versus node coverage Rolling Update Safe rollout progression Deployment Rollback Rollback flow Deployment Strategies Rolling, blue-green, canary Multi-Container Pods Sidecar and helper patterns Init Containers Sequential startup preparation DaemonSet Pattern One Pod per node StatefulSet vs Deployment Stateful and stateless contrast Jobs Run-to-completion workloads CronJobs Scheduled batch execution Static Pods Kubelet-managed manifests	Core workload knowledge for deployments, scaling, and controller patterns.
Ops Networking Services, DNS, routing, traffic policies, and how clients reach Pods.	Service Types ClusterIP, NodePort, LoadBalancer Services Deep Dive Selectors, endpoints, ports Multi-Port Services Named ports and mappings Pod Communication Pod and Service networking DNS Resolution Service discovery flow CoreDNS Deep Dive Corefile, plugins, and cluster DNS Service LB Rollout Traffic during rollouts Ingress Controllers HTTP/HTTPS routing and TLS EndpointSlices Scalable Service backend tracking Gateway API GatewayClass, Gateway, HTTPRoute Network Policy Traffic filtering between Pods	Exposure choices, HTTP entry models, and how traffic reaches Pods.
Ops Configuration and Secrets Injecting runtime config and credentials into containers.	ConfigMaps Config injection patterns ConfigMap Volume Mount config keys as files Secrets Sensitive data management Secret Volume Mount secrets as read-only files	Environment-specific settings and credential management.
Ops Security and Policy Identity, authorization, admission control, and container-level security.	RBAC Flow Authorization model RBAC User Cert Flow Certificate to kubeconfig LDAP RBAC POC Enterprise identity to namespace Security Context Container and Pod security Pod Security Standards Privileged, baseline, restricted OPA Gatekeeper Admission policy flow	Policy labs, platform governance, and access control.
Ops Scheduling Where Pods land and what resource guardrails apply.	Node Selection Scheduling constraints Taints / Tolerations Node repulsion and acceptance Affinity Rules Placement attraction and avoidance Quotas and Limits Namespace guardrails	Pod placement decisions and resource boundaries.
Production Scaling and Health Autoscaling, metrics pipeline, and probe-driven resilience.	Metrics Server kubectl top and HPA pipeline HPA Horizontal Pod Autoscaling Health Probes Liveness, readiness, startup	Autoscaling labs and resilience patterns.
Production Reference Cluster Operations Administration, upgrades, maintenance, and disaster recovery.	Cluster Administration Admin responsibilities and tasks Cordon and Drain Safe node maintenance Upgrade Sequence Cluster upgrade path Component Upgrade Order Safe component order Version Skew Compatibility rules etcd Backup Restore Disaster recovery flow	SRE-style admin training and cluster lifecycle.
Foundation Ops Storage Volume types, persistent claims, StorageClasses, CSI drivers, and data sharing.	Storage Overview Ephemeral, persistent, CSI, design Volume Types Temporary, projected, local, persistent PV / PVC Binding Claim lifecycle and binding flow Access Modes RWO, ROX, RWX, RWOP, StorageClasses HostPath PV / PVC Node-local storage for labs NFS PV / PVC Shared storage across nodes CSI, EBS, and EFS Cloud storage through CSI drivers Data Sharing emptyDir between containers RWX Pod Shared persistent claim in one Pod	Full storage path: volumes, claims, backends, and in-Pod sharing.
Reference Tools and Reference CLI tools and dashboard UIs for managing clusters.	kubectl Essentials Command-line mental model kubectl Reference Full command, output, patch, and debug guide K8s Dashboard Legacy dashboard explainer Headlamp UI In-cluster install and access UI Alternatives Headlamp, FreeLens, Portainer, K9s	Day-to-day CLI and dashboard UIs.
Production Reference Troubleshooting Diagnosing and fixing cluster, node, pod, and networking issues.	Control Plane API Server, Scheduler, etcd Pod Failures Pending, CrashLoop, OOMKilled Kubelet and Nodes NotReady, runtime, pressure Networking Service, DNS, CNI, Ingress App Debugging Logs, exec, port-forward, debug Commands Reference Troubleshooting cheat sheet CKA Scenarios Exam-style practice problems	CKA troubleshooting domain (30%), beginner to intermediate diagnostics.
Production Extensibility Extending the Kubernetes API with custom resources and controllers.	CRDs CustomResourceDefinitions, custom resources, and API extension	How operators and platform teams extend Kubernetes beyond built-in objects.