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Kubernetes Fundamentals and Cluster Operations

Categories: Cloud Computing, VMware

About Course

COURSE OVERVIEW:

This four-day course is the first step in learning about Containers and Kubernetes Fundamentals and Cluster Operations. Through a series of lectures and lab exercises, the fundamental concepts of containers and Kubernetes are presented and put to practice by containerizing and deploying a two-tier application into Kubernetes.

Course Objectives:

  • Build, test, and publish Docker container images
  • Become familiar with YAML files that define Kubernetes objects
  • Understand Kubernetes core user-facing concepts, including pods, services, and deployments
  • Use kubectl, the Kubernetes CLI, and become familiar with its commands and options
  • Understand the architecture of Kubernetes (Control plane and its components, worker nodes, and kubelet)
  • Learn how to troubleshoot issues with deployments on Kubernetes
  • Apply resource requests, limits, and probes to deployments
  • Manage dynamic application configuration using ConfigMaps and Secrets
  • Deploy other workloads, including DaemonSets, Jobs, and CronJobs
  • Learn about user-facing security using SecurityContext, RBAC, and NetworkPolicies

Course Outlines:

1.  Course Introduction

  • Introduction and Objectives

2.  Containers

  • What and Why Containers
  • Building Images
  • Running Containers
  • Registry and Image Management

3.  Kubernetes Overview

  • Kubernetes Project
  • Plugin Interfaces
  • Building Kubernetes
  • Kubectl CLI

4.  Beyond Kubernetes Basics

  • Kubernetes objects
  • YAML
  • Pods, replicas, and deployments
  • Services
  • Deployment management
  • Rolling updates
  • Controlling deployments
  • Pod and container configurations

5.  Kubernetes Networking

  • Networking within a pod
  • Pod-to-Pod Networking
  • Services to Pods
  • ClusterIP, NodePort, and LoadBalancer
  • Ingress controllers
  • Service Discovery via DNS

6.  Stateful Applications In Kubernetes

  • Stateless versus Stateful
  • Volumes
  • Persistent volumes claims
  • StorageClasses
  • StatefulSets

7.  Additional Kubernetes Considerations

  • Dynamic configuration
  • ConfigMaps
  • Secrets
  • Jobs, CronJobs

8.  Security

  • Network policy
  • Applying a NetworkPolicy
  • SecurityContext
  • runAsUser/Group
  • Service accounts
  • Role-based access control

9.  Logging and Monitoring

  • Logging for various objects
  • Sidecar logging
  • Node logging
  • Audit logging
  • Monitoring architecture
  • Monitoring solutions
  • Octant
  • VMware vRealize® Operations Manager™

10.  Cluster Operations

  • Onboarding new applications
  • Backups
  • Upgrading
  • Drain and cordon commands
  • Impact of an upgrade to running applications
  • Troubleshooting commands
  • VMware Tanzu™ portfolio overview
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