helm cheat sheet

Helm Cheat Sheet

List Installed Helm Charts

#List Installed Helm Charts in current
helm ls 
# or
helm list

# List Installed Helm Charts from all namespace
helm ls -aA
helm list --all-namespaces

#List Installed Helm Charts in specific namespace
helm ls -n cert-manager

Helm find erors in helm syntax

helm lint my-chart-folder

Helm install charts

#Run a test installation to validate and verify the chart:
# add --dry-run --debug in any helm install command
helm install [release-name] ./my-chart-directory --dry-run --debug

#Install a chart from a local directory
helm install release-name ./my-chart-directory

# Install a chart from a remote repository
helm install my-release stable/mysql

# Install a chart with custom configuration values
helm install my-release stable/mysql --set mysqlRootPassword=secretpassword

# Install a release in a specific namespace
helm install -name release-name charts-name --namespace sample

Upgrading Helm Charts

To upgrade a Helm chart to a new version or with updated configuration, you can use the helm upgrade command.

# basic
helm upgrade [release] [chart]
helm upgrade -name helm-release-name helm-charts-path
helm upgrade -name helm-release-name helm-charts-path --namespace sample

#Instruct Helm to rollback changes if the upgrade fails:
helm upgrade [release] [chart] --atomic

#Upgrade a release. If it does not exist on the system, install it
helm upgrade [release] [chart] --install

#Upgrade to a specified version
helm upgrade [release] [chart] --version [version-number]

Uninstall helm chart

To uninstall a Helm chart and delete the associated resources from your Kubernetes cluster, you can use the helm uninstall command

helm uninstall [release]
# Example
helm uninstall helm-release-name -n sample-namespace

helm Override the default values from a file

helm install [app-name] [chart] --values [yaml-file/url]
helm install -name helm-release-name helm-charts --namespace sample --values helm-charts/values-dev.yaml
helm install -name helm-release-name helm-charts --namespace sample --values helm-charts/values-test.yaml
helm install -name helm-release-name helm-charts --namespace sample --values helm-charts/values-prod.yaml

helm repo list

helm repo list

Update list of Helm charts from repositories

helm repo update

Search Helm Hub

helm search hub wordpress 
helm search hub prometheus

Add a repository

helm repo add [repository-name] [url]
helm repo add bitnami https://charts.bitnami.com/bitnami

Remove a repository from your system

helm repo remove [repository-name]
helm repo remove bitnami

Display the chart’s values

helm show values my-charts

Download a chart

helm pull my-charts

Display a list of a chart’s dependencies

helm dependency list my-charts