Helm Commands

Small cheatsheet on how to use the helm command.

List charts⚑

helm ls

Get information of chart⚑

helm inspect {{ package_name }}

List all the available versions of a chart⚑

helm search -l {{ package_name }}

Download a chart⚑

helm pull {{ package_name }}

Download and extract

helm pull --untar {{ package_name }}

If you want to pull it from an http repository you can use:

helm pull cost-analyzer --repo https://kubecost.github.io/cost-analyzer/ --version 2.7.2

However if it's an oci one you need to use the next syntax:

helm pull oci://public.ecr.aws/karpenter/karpenter --version 1.5.0

Which has the format oci://{repository}/{chart_name}.

Search charts⚑

helm search {{ package_name }}

Operations you should do with helmfile⚑

The following operations can be done with helm, but consider using helmfile instead.

Install chart⚑

Helm deploys all the pods, replication controllers and services. The pod will be in a pending state while the Docker Image is downloaded and until a Persistent Volume is available. Once complete it will transition into a running state.

helm install {{ package_name }}

Give it a name⚑

helm install --name {{ release_name }} {{ package_name }}

Give it a namespace⚑

helm install --namespace {{ namespace }} {{ package_name }}

Customize the chart before installing⚑

helm inspect values {{ package_name }} > values.yml

Edit the values.yml

helm install -f values.yml {{ package_name }}

Upgrade a release⚑

If a new version of the chart is released or you want to change the configuration use

helm upgrade -f {{ config_file }} {{ release_name }} {{ package_name }}

Rollback an upgrade⚑

First check the revisions

helm history {{ release_name }}

Then rollback

helm rollback {{ release_name }} {{ revision }}

Delete a release⚑

helm delete --purge {{ release_name }}

Working with repositories⚑

List repositories⚑

helm repo list

Add repository⚑

helm repo add {{ repo_name }} {{ repo_url }}

Update repositories⚑

helm repo update