Helm Concepts

Question 1

What problem does Helm solve for Kubernetes applications

Answer 1

Helm helps manage an application as one package instead of forcing you to manually manage many separate Kubernetes YAML files and objects

Question 2

In the WordPress example what files are turned into Helm templates

Answer 2

Files such as Deployment Secret PersistentVolume PersistentVolumeClaim and Service manifests are turned into templates

Question 3

Why are Helm templates useful

Answer 3

Templates let you replace hard coded values with variables so the same chart can be reused in different environments

Question 4

What do the double curly braces mean in a Helm template

Answer 4

They indicate template variables whose values will be filled in from another source during rendering

Question 5

Where do Helm template variables usually get their values from

Answer 5

They usually get their values from the values dot yaml file

Question 6

What kinds of settings are commonly stored in values dot yaml

Answer 6

Common settings include image version storage size passwords and other deployment specific options

Question 7

What combination of files makes up a Helm chart

Answer 7

A Helm chart is made up of templates a values dot yaml file and chart metadata such as Chart dot yaml

Question 8

What is the purpose of the Chart dot yaml file in a Helm chart

Answer 8

Chart dot yaml stores metadata about the chart such as its name version description keywords and maintainer information

Question 9

Can you create your own Helm chart for your own application

Answer 9

Yes you can create your own chart for your own application and package its Kubernetes resources with templates and values

Question 10

What is Artifact Hub in the context of Helm

Answer 10

Artifact Hub is a repository style catalog where users can discover Helm charts published by the community

Question 11

What is the difference between helm search hub and helm search repo

Answer 11

helm search hub searches charts on Artifact Hub while helm search repo searches repositories that you have already added to your local Helm setup

Question 12

How do you add a chart repository to your local Helm configuration

Answer 12

You use helm repo add followed by a repository name and its URL

Question 13

Which command shows the repositories already configured in your local Helm setup

Answer 13

helm repo list

Question 14

What does helm install do

Answer 14

helm install downloads a chart and installs it into the cluster as a new release

Question 15

What is a Helm release

Answer 15

A release is one installed instance of a chart on a Kubernetes cluster

Question 16

Can the same chart be installed multiple times on one cluster

Answer 16

Yes the same chart can be installed multiple times and each installation becomes a separate independent release

Question 17

Which command lists installed Helm releases

Answer 17

helm list

Question 18

Which command removes an installed Helm release

Answer 18

helm uninstall

Question 19

What does helm pull do

Answer 19

helm pull downloads a chart package without installing it

Question 20

Why would you use helm pull with the untar option

Answer 20

It downloads the chart and extracts its contents locally so you can inspect or edit files such as values dot yaml

Question 21

How do you install a chart after downloading and editing it locally

Answer 21

You run helm install and provide the path to the local chart directory instead of a remote chart name

Question 22

What is the main exam level Helm idea from this lecture

Answer 22

For exam purposes you should understand charts values repositories releases and the core commands for searching installing listing downloading and uninstalling charts