Kubernetes Fundamentals and Cluster Operations [VMKFCO]

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.

OBJECTIVES

By the end of the course, you should be able to meet the following 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

AUDIENCE

Anyone who is preparing to build and run Kubernetes clusters

CONTENT

1  Course Introduction

• Introductions 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