Helm

2 minutes read

Exercise 🔗

Search for the nginx Chart maintained by Bitnami in the ArtifactHub, and find the repository URL
Add the Bitnami Helm repository to your local Helm installation

The repository’s path is https://charts.bitnami.com/bitnami

Create a namespace called web-apps
Install the nginx Chart as a release named my-nginx in the web-apps namespace using version 15.4.4
List all Helm releases and verify the installation status
Get the manifest and values of the my-nginx release
Create a custom values file named custom-values.yaml that:
- Sets the replica count to 3
- Changes the service type to NodePort
- Sets a custom image tag to 1.25.3
Upgrade the my-nginx release using your custom values file
Check the rollout history of the release
Rollback the release to the previous version
Uninstall the my-nginx release
Remove the web-apps namespace

Documentation 🔗

https://helm.sh/docs/

Solution 🔗

Search for the nginx Chart maintained by Bitnami in the ArtifactHub, and find the repository URL

helm search hub nginx bitnami

Add the Bitnami Helm repository

helm repo add bitnami https://charts.bitnami.com/bitnami
helm repo update

Create a namespace called web-apps

kubectl create namespace web-apps

Install the nginx Chart as a release named my-nginx in the web-apps namespace

helm install my-nginx bitnami/nginx --namespace web-apps

We can use the --version flag to specify the version of the Chart to install. If no version is provided, the latest version of the Chart is installed.

List all Helm releases and verify the installation status

helm list --namespace web-apps
helm status my-nginx --namespace web-apps

Get the manifest and values of the my-nginx release

helm get manifest my-nginx --namespace web-apps
helm get values my-nginx --namespace web-apps

Create a custom values file named custom-values.yaml

replicaCount: 3

service:
  type: NodePort

image:
  tag: "1.25.3"

Upgrade the my-nginx release using your custom values file

helm upgrade my-nginx bitnami/nginx --namespace web-apps -f custom-values.yaml

Check the rollout history of the release

helm history my-nginx --namespace web-apps

Rollback the release to the previous version

helm rollback my-nginx 1 --namespace web-apps

Uninstall the my-nginx release

helm uninstall my-nginx --namespace web-apps

Remove the web-apps namespace

kubectl delete namespace web-apps