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Unit 10 - Kubernetes

Overview

This unit introduces Kubernetes (K8s), an open-source container orchestration platform that automates the deployment, scaling, and management of containerized applications. The unit covers:

  • Understanding Kubernetes Architecture - Nodes, Control Plane, and Cluster Components.
  • Installing K3s - A lightweight Kubernetes distribution optimized for resource efficiency.
  • Interacting with Kubernetes - Using kubectl to manage and troubleshoot clusters.
  • Deploying Applications - Creating and managing Pods, Deployments, and Services.
  • Security and Best Practices - Implementing security measures and troubleshooting issues.

Kubernetes plays a critical role in modern enterprise infrastructure, enabling scalability, high availability, and automation in cloud-native applications.

Learning Objectives

By the end of this unit, learners will:

  1. Understand the Core Concepts of Kubernetes:

    • Define Kubernetes and explain its role in container orchestration.
    • Differentiate between Kubernetes vs. PaaS (Platform as a Service).

  2. Deploy and Manage Kubernetes Clusters:

    • Install K3s and verify its functionality.
    • Manage cluster resources using kubectl.

  3. Perform Basic Kubernetes Operations:

    • Create and manage Pods, Deployments, and Services.
    • Understand the role of Namespaces, ConfigMaps, and Secrets.

  4. Troubleshoot Kubernetes Clusters:

    • Identify common cluster issues and validate node status.
    • Diagnose networking and pod scheduling problems.

  5. Apply Security Best Practices in Kubernetes:

    • Secure containerized applications using best practices.
    • Implement Kubernetes Pod Security Standards.

Key Terms and Definitions

Kubernetes (K8s) K3s
Control Plane Nodes
Pods Deployments
Services Kubelet
Scheduler ETCD
Kube-proxy Static Pod