Installing Helm in Kubernetes - Interactive Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the command to download the Helm installation script.

Kubernetes

curl -fsSL [1] | bash

Drag options to blanks, or click blank then click option'

Ahttps://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3

Bhttps://get.helm.sh/helm-v3.12.0-linux-amd64.tar.gz

Chttps://helm.sh/docs/intro/install/

Dhttps://kubernetes.io/docs/tasks/tools/install-helm/

Attempts:

3 left

💡 Hint

Common Mistakes

Using a URL that points to a tarball instead of the installation script.

Using the Helm documentation page URL instead of the script URL.

The Helm installation script is available at the URL https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3. Using curl -fsSL downloads this script for installation.

2fill in blank

medium

Complete the command to verify the Helm version after installation.

Kubernetes

helm [1]

Drag options to blanks, or click blank then click option'

Aversion

Blist

Cinstall

Dupdate

Attempts:

3 left

💡 Hint

Common Mistakes

Using helm install which installs charts, not shows version.

Using helm list which lists releases, not version.

The command helm version shows the installed Helm version to confirm successful installation.

3fill in blank

hard

Fix the error in the command to add the Bitnami Helm chart repository.

Kubernetes

helm repo [1] bitnami https://charts.bitnami.com/bitnami

Drag options to blanks, or click blank then click option'

Aupdate

Binstall

Cadd

Dlist

Attempts:

3 left

💡 Hint

Common Mistakes

Using helm repo update which refreshes repos but does not add new ones.

Using helm repo install which is not a valid subcommand.

The correct command to add a Helm chart repository is helm repo add. This registers the repository URL under the name 'bitnami'.

4fill in blank

hard

Fill both blanks to update Helm repositories and then install a chart named 'nginx' from the 'bitnami' repo.

Kubernetes

helm repo [1] && helm [2] nginx bitnami/nginx

Drag options to blanks, or click blank then click option'

Aupdate

Binstall

Cadd

Dlist

Attempts:

3 left

💡 Hint

Common Mistakes

Using helm repo add instead of update for refreshing repos.

Using helm list instead of install to deploy charts.

First, helm repo update refreshes the local cache of chart repositories. Then, helm install nginx bitnami/nginx installs the nginx chart from the bitnami repository.

5fill in blank

hard

Fill all three blanks to initialize Helm with the correct version, add the Bitnami repo, and update repositories.

Kubernetes

curl -fsSL [1] | bash && helm repo [2] bitnami https://charts.bitnami.com/bitnami && helm repo [3]

Drag options to blanks, or click blank then click option'

Ahttps://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3

Badd

Cupdate

Dinstall

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong URLs or commands like 'install' instead of 'add' or 'update'.

Skipping the repo update step after adding a new repo.

The first blank is the URL to download the Helm installation script. The second blank is the command to add the Bitnami chart repository. The third blank updates the local repository cache.

Practice

1. What is Helm used for in Kubernetes?

easy

A. To monitor Kubernetes nodes

B. To create Kubernetes clusters

C. To manage Kubernetes applications easily

D. To replace kubectl commands

Solution

1. Step 1: Understand Helm's purpose

   Helm is a package manager for Kubernetes that simplifies app deployment and management. Creating clusters, monitoring nodes, or replacing kubectl are not Helm's functions.

2. Final Answer:

   To manage Kubernetes applications easily -> Option C

3. Quick Check:

   Helm manages apps = A [OK]

Hint: Helm is like an app store for Kubernetes [OK]

Common Mistakes:

• Confusing Helm with cluster creation tools
• Thinking Helm replaces kubectl
• Assuming Helm monitors nodes

2. Which command correctly installs Helm using the official script on Linux?

easy

A. curl https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 | bash

B. wget https://helm.sh/install.sh | sh

C. helm install https://get.helm.sh/helm.sh

D. kubectl apply -f https://helm.sh/install.yaml

Solution

1. Step 1: Identify the official Helm install script command

   The official Helm install script is run by piping curl output to bash as in curl https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 | bash. Other options use incorrect methods: invalid helm install, wget with wrong URL, kubectl apply.

2. Final Answer:

   curl https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 | bash -> Option A

3. Quick Check:

   Official script uses curl + bash = C [OK]

Hint: Use curl with bash for official Helm install script [OK]

Common Mistakes:

• Using wget without proper flags
• Trying to install Helm with kubectl
• Confusing Helm install commands with kubectl commands

3. You want to install Helm on a Mac using Homebrew. Which command correctly installs Helm and verifies the installation?

easy

A. brew get helm && helm check

B. brew install helm && helm version

C. brew install helm && kubectl version

D. brew update helm && helm status

Solution

1. Step 1: Identify correct Homebrew install command

   Homebrew installs packages with 'brew install <package>', so 'brew install helm' is correct. Running 'helm version' shows Helm's installed version, confirming success.

2. Final Answer:

   brew install helm && helm version -> Option B

3. Quick Check:

   Install with brew + verify with helm version = A [OK]

Hint: Use 'brew install helm' then 'helm version' to check [OK]

Common Mistakes:

• Using incorrect brew commands like 'brew get' or 'brew update helm'
• Verifying with kubectl instead of helm
• Using 'helm check' or 'helm status' which are invalid

4. After installing Helm, what is the output of running helm version --short if Helm 3.12.0 is installed?

medium

A. v3.12.0+gabcdef123

B. Helm version 2.16.0

C. Error: command not found

D. v1.0.0-alpha

Solution

1. Step 1: Understand the helm version output format

   Helm 3.x versions show output like 'v3.12.0+gabcdef123' with --short flag. Eliminate incorrect outputs: Helm version 2.16.0 shows Helm 2 version, error if not installed, unrelated alpha version.

2. Final Answer:

   v3.12.0+gabcdef123 -> Option A

3. Quick Check:

   Helm 3 version short output = B [OK]

Hint: Helm 3 versions start with 'v3.' in version output [OK]

Common Mistakes:

• Expecting Helm 2 output after installing Helm 3
• Confusing error output with version output
• Misreading version format

5. You ran curl https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 | bash but got a permission denied error. What is the likely fix?

medium

A. Restart the Kubernetes cluster

B. Change the URL to use http instead of https

C. Install kubectl first

D. Run the command with sudo to get admin rights

Solution

1. Step 1: Identify cause of permission denied error

   Permission denied usually means the script needs admin rights to install files. Running the command with sudo grants needed permissions; other options do not address permission issues.

2. Final Answer:

   Run the command with sudo to get admin rights -> Option D

3. Quick Check:

   Permission denied fix = D [OK]

Hint: Use sudo if permission denied during install script [OK]

Common Mistakes:

• Changing URL protocol unnecessarily
• Thinking kubectl installation fixes Helm install errors
• Restarting cluster unrelated to install permissions