Kubernetes Administrator (CKA)

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Course Overview

Certified Kubernetes Administrator (CKA)

This Certified Kubernetes Administrator course from AEM helps participants prepare for the Certified Kubernetes Administrator exam organized by Cloud Native Computing Foundation (CNCF). Hence the CKA certification outline has been derived from the CKA curriculum published by CNCF. The entire course is based on the Kubernetes clusters built using Kubeadm and the latest possible version of Kubernetes.

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Prerequisites

  • To take up this Kubernetes Certified Administrator training is Docker Essentials training provided by AEM.
  • Knowledge of basic UNIX / Linux commands will be good to have
  • Valid AWS account and individual credentials to create EC2 instances.
  • Should have the knowledge to create AWS EC2 instances and should know how to access EC2 instances via SSH

Course Outline

Kubernetes Administrator (CKA)

  • Module 1
    • Kubernetes Overview 
    • Issues faced while deploying / managing container on various environments.
    • What is Kubernetes?
    • How Kubernetes came into existence?
    • Kubernetes Landscape.
    • Kubernetes Architecture
    • Master – Slave Configuration of Kubernetes.
    • Components of a Master Node.
    • Components of a Slave Node.
    • Communication between Master and slave nodes.
    • Setting up a development Kubernetes Cluster on AWS.
    • Understanding Namespaces in Kubernetes.
    • Kubernetes Pods 
    • Kubernetes Objects.
    • Understand what a Pod is and its relationship with a Container.
    • Pod Lifecycle.
    • Creating pods and running them on the cluster.
    • Kubernetes Services 
    • Understanding need for Service Discovery.
    • Writing services and selecting pods using labels and selectors.
    • Understand the differences between ClusterIP, NodePort and LoadBalancer services.
    • State Persistence 
    • How to manage state persistence in Kubernetes.
    • Understand Storage Class, Persistence Volume and a Persistence Volume Claim.
    • Understand difference between Static and Dynamic persistence.
    • Understand difference between Stateless and Stateful containers.
  • Module 2
    • Review
    • Review all Kubernetes objects and services covered so far.
    • Review state persistence, objects used to achieve the same.
    • Kubernetes Controllers
    • Understand how a Pod and Deployment works.
    • Scaling pods using Deployment.
    • Differences between Replication Controller and ReplicaSet.
    • How to update and rollback pods using ReplicaSet.
    • Understand DaemonSet.
    • Understand StatefulSet Controller and how to use it to manage stateful applications.
    • Resource Quotas and Namespaces 
    • Namespaces and quota allocation.
    • Limiting resources using Resource Quotas.
  • Module 3
    • Kubernetes installation using Kubeadm tool  
    • Installing Kubeadm development environment in EC2 machines.
    • Creating a Kubernetes Cluster using Kubeadm commands.
    • Pod Design
    • Understand “run to completion” Jobs in Kubernetes.
    • Scheduling CronJobs in Kubernetes.
    • Multicontainer Pods 
    • Understanding the concept of Pod.
    • Creating a SideCar container for your Application container.
    • Understanding the concept of Init containers.
    • Observability 
    • Understanding Logging and Monitoring in Kubernetes.
    • Setting up Horizontal Pod Autoscaler for Kubernetes Deployments.
    • Understanding debugging and troubleshooting in Kubernetes.
    • Setting up Readiness and Liveness probs to auto–heal the application.
  • Module 4
    • Configuration 
    • Understanding the use case of ConfigMaps and Secrets in Kubernetes.
    • Setting up Environment variables using ConfiMaps and Secrets.
    • Creating a distributed complex application with the help of ConfigMaps and Secrets.
    • Understand how to apply SecurityContext in Pod and Container level.
    • Role Based Access Control  
    • Setting up Role Based Access Control in Kubernetes cluster.
    • Understand how to create User accounts and ServiceAccounts in Kubernetes.
    • Understand Kubernetes Roles and Rolebindings.
    • Understand Kubernetes ClusterRoles and ClusterRoleBindings.
    • Setting up Kubernetes Context for a user and namespace.
    • Services & Networking 
    • Review of Kubernetes Services.
    • Configure NetworkPolicy object to control ingress and egress traffic to a backend Pod.
    • Concept of Ingress Controller.
  • Module 5
    • Installation, Configuration & Validation    
    • Installing Kubeadm development environment in EC2 machines.
    • Initializing cluster with Kubeadm with various options.
    • Joining the worker nodes.
    • Choose a Container Network Interface.
    • Configure a Highly Available Kubernetes cluster.
    • Know where to get the Kubernetes release binaries.
    • Cluster Maintenance  
    • Understand Kubernetes cluster upgrade process.
    • Facilitate operating system upgrades.
    • Implement etcd backup and restore methodologies.
    • Networking Deep Dive
    • Understand the networking configuration on the cluster nodes.
    • Understand Pod networking concepts.
    • Understand service networking.
    • Deploy and configure network load balancer.
    • Setting up Ingress Controller.
    • Know how to use Ingress rules.
    • Know how to configure and use the cluster DNS.
    • Understanding Container Network Interface.
  • Module 6
    • Workloads & Scheduling 
    • Understand DaemonSet and how to use them.
    • Understand how to label nodes and use node selectors for scheduling pods.
    • Understand Node Affinity and Node Anti Affinity rules.
    • Understand Pod Affinity and Pod Anti Affinity  rules.
    • Understand how to use Taints & Tolerations.
    • Static Pods and manual Scheduling.
    • Using multiple schedulers in the cluster.
  • Module 7
    • Security
    • Know how to configure authentication and authorization.
    • Understand how master components authenticate themselves through TLS certificates.
    • Understanding kubeconfig file.
    • Understanding Role–Based Access Control.
    • Understanding Kubernetes security primitives.
    • Logging/Monitoring 
    • Understand how to monitor all cluster components.
    • Understand how to monitor applications.
    • Manage cluster component logs.
    • Manage application logs.
    • Understanding JSON PATH query.
  • Module 8
    • Troubleshooting   
    • Troubleshoot application failure – checking logs for the applications and taking necessary actions.
    • Troubleshoot control plane failure – Looking for errors in master/control plane components.
    • Troubleshoot worker node failure – Checking logs for Kubelet and Docker.  Troubleshoot networking.
    • CKA Overview 
    • Overview of CKA Exam
    • Labs used during exam scenarios.
    • How to register, prepare and take the CKA examination.