hakanbayraktar / k8s-cka-tutorial

Certified Kubernetes Administrator (CKA) Tutorial

Certified Kubernetes Administrator (CKA) Tutorial

Videos

Core Concepts: Understand the Kubernetes Cluster Architecture
Keywords: Cluster, Node, Control Plane, etcd, Cluster Topology

Core Concepts: Understand the Kubernetes API Primitives
Keywords: API Group, API Resource, Namespace, Addons, Metrics Server

Installation, Configuration & Validation: Install Kubernetes Masters and Node
Keywords: kubeadm, kube-api-server, kube-controller-manager, kube-scheduler, cloud-controller-manager, kublet, kube-proxy, etcd

Security: Know How to Configure Authentication and Authorization
Keywords: Authentication, Authorization, Adminission Control, Transport Security, User, Client Certificate Authentication

Security: Know How to Configure Authentication and Authorization
Keywords: AWS Authentication, Role-Based Access Control, Authorization Rules, ClusterRole, RoleBinding, ClusterRoleBinding

Security: Know How to Configure Authentication and Authorization
Keywords: ConfigMap, Role

Core Concepts: Understand the Kubernetes API Primitives
Keywords: Metadata, Labels, Annotations, spec, status, Imperative Commands, Imperative Object Configuration, Declarative Object Configuration

Core Concepts: Understand the Kubernetes API Primitives
Keywords: Helm

Core Concepts: Understand the Kubernetes API Primitives
Keywords: Kustomize

Application Lifecycle Management: Know Various Ways to Configure Applications
Keywords: Pod, Container, Pod Event, Pod Status (Phase), Pod Condition, Container State, Container Environment

Application Lifecycle Management: Know Various Ways to Configure Applications
Keywords: Container Lifecycle Hook, Probe, readinessGates

Networking: Understand Pod Networking Concepts
Keywords: Container Logs, Intra-Pod Networking, Inter-Pod (Cluster) Networking, Intra-Pod IPC

Application Lifecycle Management: Understand the primitives necessary to create a self-healing application
Keywords: ReplicaSet, Horizontal Pod Autoscaler

Application Lifecycle Management: Understand the primitives necessary to create a self-healing application
Keywords: Deployment, DaemonSet, StatefulSet

Application Lifecycle Management: Understand Deployments and How to Perform Rolling Update and Rollbacks
Keywords: Deployment Revision, Job, CronJob

Core Concepts: Understand Services and other Network Primitives
Keywords: Service, ClusterIP, Endpoints, Service Mode, Container Network Interface (CNI)

Deploy and Configure Network Load Balancer
Keywords: LoadBalancer, NodePort, ExternalName, Headless Service

Networking: Know How to Configure and Use the Cluster DNS
Keywords: CoreDNS, kube-dns, Pod DNS Policy, Pod DNS Config

Security: Create and Manage TLS Certificates for Cluster Components
Keywords: Certificate Authority, CertificateSigningRequest

Networking: Know How to Use Ingress Rules
Keywords: Ingress Controller, Ingress

Script

First a disclaimer... These videos were made as part of my preparation for the CKA certification exam.

The material is organizied around the official curriculum:

Open Source Curriculum for CNCF Certification Courses

This tutorial is very different than your typical K8s tutorial, e.g.:

Tutorials

Those tutorial get to the "fun stuff", e.g., Pods, containers, etc, at the start. This is more appropriate for a first taste of K8s.

This tutorial, however, starts with more of the fundamentals, e.g., cluster topology, authentication, etc. The thinking here is that you already know you want to learn K8s.

While the official curriculum provided the organization, the bulk of the content comes from the K8s concepts section.

Concepts

Finally, there are also a number of K8s preparation course available (most were around $300 or so) that you might find valuable. Without naming names, I was fairly unsatisfied with the one that I took and thus was born this tutorial (I needed more hands on practice).