Certified Kubernetes Administrator – CKA

Certified Kubernetes Administrator (CKA) Introduction

Welcome to the Certified Kubernetes Administrator (CKA) course. This course is specifically designed for professionals aiming to excel in Kubernetes cluster administration, a key area in modern cloud technology. As Kubernetes has become a pivotal platform for cloud orchestration, this course offers a structured pathway for those looking to achieve proficiency as Certified Kubernetes Administrators.

Gain an in-depth understanding and the practical skills necessary to effectively manage and oversee Kubernetes clusters, ensuring their reliability, scalability, and efficiency for containerized applications.

Learn about designing, deploying, and maintaining production-grade Kubernetes clusters, making you adept at handling the intricacies of this powerful cloud orchestration tool.

By enrolling in the Certified Kubernetes Administrator course, you are taking a significant step towards mastering Kubernetes cluster administration, equipping yourself with the skills and knowledge necessary to excel in the dynamic and ever-evolving realm of containerized application management.

Certified Kubernetes Administrator (CKA) Course Objectives

The objectives of the Certified Kubernetes Administrator (CKA) course are comprehensive and aimed at building a strong foundation in Kubernetes cluster administration. Throughout the course, you will:

• Acquire a thorough understanding of Kubernetes cluster architecture, crucial for managing complex cloud environments.
• Learn the nuances of installing and configuring Kubernetes clusters, preparing you for real-world scenarios.
• Delve into effective strategies for deploying applications, including rollouts and rollbacks, essential for maintaining production stability.
• Explore efficient techniques for scaling both clusters and applications, optimizing resource use and performance.
• Master the art of creating resilient, self-healing deployments, a key skill in ensuring uninterrupted services.
• Understand the intricacies of networking in Kubernetes, including configuration for cluster nodes, services, and CoreDNS.
• Investigate persistent and intelligent storage solutions, vital for long-term data management in applications.
• Develop advanced troubleshooting skills for addressing cluster, application, and user-related issues, enhancing your problem-solving capabilities.
• Gain expertise in handling Kubernetes in various cloud environments, making your skills versatile and vendor-agnostic.

Prerequisites

• This course is intended for students who have the basic knowledge of the core components of Kubernetes, such as Pods and Deployments.
• However, instructors will always strive to assure every student gains a very thorough understanding of the material covered, regardless of the students’ prior experience.

Audience

• Professionals who need to maintain or set up a Kubernetes cluster
• Container Orchestration Engineers
• DevOps Professionals

Certified Kubernetes Administrator (CKA) Outline

Cluster Architecture 

• Kubernetes Architecture
• Pods and the Control Plane

Cluster Building with Kubeadm 

• Kubeadm Prerequisites
• Configure Network Plugin Requirements
• Kubeadm Basic Cluster
• Installing Kubeadm
• Join Node to Cluster

Cluster Administration

• ETCD Snapshot and Restore
• Kubeadm Cluster Upgrade
• Purge Kubeadm
• Deploy Kubernetes using Ansible

Containers 

• Container Essentials
• Creating a Docker Image

Kubectl

• Kubectl get and sorting
• kubectl get

Pod Basics 

• YAML
• Basic Pods
• Manifests
• Namespaces
• API Versioning and Deprecations

Resource Management 

• Kubectl Top and Application Monitoring
• Limits, Requests, and Namespace ResourceQuotas
• Resource Requests and Limits
• Namespace Resource Quota
• Admission Controller

• Create a LimitRange AdmissionController

User Administration 

• Contexts
• Role Based Access Control
• RBAC Distributing Access

Advanced Pod Design 

• Readiness and Liveness Probes
• Implement Probes and Health Checks
•  ConfigMaps and Volume Mounting
• Persistent Configuration with ConfigMaps
• Secrets
• Create and Consume Secrets
• Multi-Container Pods
• Creating Ephemeral Storage For Fluentd Logging Sidecar
• Init Containers
• Understand the Init Container Multi-Container Pod Design Pattern
• Taints, Tolerations, and Pod Affinity
• Lab: Tainted Nodes and Tolerations

Logging 

• Logging with kubectl log
• Advanced Logging Techniques
• Utilize Container Logs

Labels 

• Labels
• Labels and Selectors
• Annotations
• Insert an Annotation

 Replica and Daemon Sets 

• ReplicaSets
• Create and Configure a ReplicaSet
• DaemonSets

Deployments 

• Deployments – Purpose and Advantages
• Writing a Deployment Manifest
• Deployments – Version Control
• Performing Rolling Updates and Rollbacks with Deployments
• Blue/Green and Canary Deployment Strategies
• Advanced Deployments Strategies
• Deployments – Horizontal Scaling
• Horizontal Pod Autoscaling

Persistent Storage 

• Persistent Volumes, Claims, and StorageClasses
• PVC, PV, and StorageClass config
• Persistent Storage with NFS

Extending Kubernetes

• Custom Resource Definitions
• Introduction to CRDs

Helm and Kustomize

• Helm
• Making Charts and Templates with Helm
• Deploy Existing Packages via Helm
• Using Kustomize

 Services & Networking 

• NetworkPolicy
• Deploy a NetworkPolicy
• Namespace Network Policy
• LoadBalancer, NodePort, and ClusterIP
• Access to applications via services
• Networking Plugins
• Gateway API Routing
• Network Troubleshooting

DNS

• Hostnames and FQDNs
• Hostnames and FQDNs
• CoreDNS
• Install CoreDNS
• Configure CoreDNS
• Configure CoreDNS
• Revert CoreDNS to KubeDNS