Creating custom Helm charts in Kubernetes - Quick Revision & Summary

Recall & Review

beginner

What is a Helm chart?

A Helm chart is a package that contains all the files needed to create a Kubernetes application. It includes templates, configuration files, and metadata.

beginner

What is the purpose of the 'values.yaml' file in a Helm chart?

The 'values.yaml' file holds default configuration values that can be customized when installing the chart. It helps users set parameters without changing templates.

beginner

Which command initializes a new Helm chart named 'myapp'?

The command is: helm create myapp

intermediate

How do Helm templates help in Kubernetes deployments?

Helm templates allow you to write reusable Kubernetes manifests with placeholders. These placeholders get replaced with actual values during deployment, making customization easy.

beginner

What file in a Helm chart contains metadata like chart name, version, and description?

The 'Chart.yaml' file contains metadata such as the chart's name, version, description, and dependencies.

Which Helm command packages a chart into a versioned archive?

A helm upgrade

B helm install

C helm create

D helm package

The 'helm package' command bundles a chart directory into a versioned .tgz archive.

Where do you define default configuration values for a Helm chart?

A templates/deployment.yaml

B values.yaml

C Chart.yaml

D README.md

The 'values.yaml' file holds default values that templates use during rendering.

What does the 'helm install' command do?

A Deploys a Helm chart to Kubernetes

B Creates a new Helm chart

C Deletes a Helm release

D Packages a Helm chart

'helm install' deploys the chart to the Kubernetes cluster as a release.

Which file contains the Kubernetes resource templates in a Helm chart?

A values.yaml

B Chart.yaml

C templates/

D LICENSE

The 'templates/' directory holds Kubernetes manifest templates.

How can you customize a Helm chart during installation?

A By passing custom values with --set or a values file

B By editing Chart.yaml

C By changing the helm binary

D By deleting templates

You customize charts by passing values with --set or using a custom values file.

Explain the main components of a custom Helm chart and their roles.

Think about what files you find inside a Helm chart folder and what each does.

Describe the steps to create and deploy a simple custom Helm chart.

Start from creating the chart, then customizing, then deploying.