HELM

1 day / Max 8 people *

Target Audience

People attending this course are developers, operators, or deployment managers wanting to implement templating and deployment with Helm and understand how it works.

Course outline *

Introduction

• Deploy in Kubernetes – classic way
• What is Helm?
• CNCF
• Helm through versions
• Deploy to Kubernetes with Helm
• The open-source ecosystem and Helm

Getting started

• Understand the structure of a Chart – tree structure (Chart.yaml, templates, etc.)
• Basic commands (helm init, fetch, install, upgrade, template, etc.)
• Application life cycle (release, update, rollback)
• Good practices (naming, annotations, labels, etc.)

Templateling in detail

• Introduction
• Loops
• Conditions
• ToYaml and indentation functions
• The _helpers and NOTES.txt file
• Get file contents with .Files

Advanced features

• Deployment best practices
• Combine values.yaml files
• Using hooks
• Plugins
• Tools: Helmfile, Helm Git, Helm Diff
• Test your Charts
• Troubleshooting
• CI/CD and Helm
• Store your Chart (Chart Museum, Cloud services, OCI, …)

Deployment

• Deployment strategies: Argo CD and Flux CD
• Managing dependencies between Charts
• Umbrella Chart and global values
• Management of Secrets and sensitive information

To go further

• Introducing Kustomize
• Major differences with Helm
• Making Helm with Kustomize

This course is made up of numerous labs, demos, quizzes.

* Standard modalities – Modular according to your configuration and your objectives

Prerequisites

Participants in this course have skills and experience working with kubernetes (see our training) , its manifests and application deployment.
Knowledge of GitOps ArgoCD (see our training) is a plus.