2.helm
Commands

Helm Commands and Usage

1. Install a Release

helm install <release-name> <chart> [flags]
  • Example: 
    helm install Vatanboard-release Vatanboard
  • Description: Installs a Helm chart as a release. The release is named Vatanboard-release, and the chart is vatanboard.

2. Uninstall a Release

helm uninstall <release-name> [flags]
  • Example: 
    helm uninstall vatanboard-release
  • Description: Uninstalls a Helm release. In this case, it removes the Vatanboard-release.

3. Upgrade a Release

helm upgrade <release-name> <chart> [flags]
  • Example: 
    helm upgrade Vatanboard-release Vatanboard
  • Description: Upgrades an existing release. If the release does not exist, it installs it.

4. Upgrade or Install a Release

helm upgrade --install <release-name> <chart> [flags]
  • Example: 
    helm upgrade --install Vatanboard-release Vatanboard
  • Description: This command is useful when you want to upgrade a release if it exists or install it if it doesn't. It’s a combination of helm upgrade and helm install.

5. List Releases

helm list [flags]
  • Example: 
    helm list
helm list -n Vatanboard-ns
  • Description: Lists all installed releases in the current namespace or specific namespace (Vatanboard-ns in the example).

6. Add a Helm Repository

helm repo add <repo-name> <repo-url>
  • Example: 
    helm repo add traefik https://traefik.github.io/charts
  • Description: Adds a new Helm chart repository, such as the Traefik charts repository.

7. Update Helm Repositories

helm repo update
  • Example: 
    helm repo update
  • Description: Updates the Helm repositories to the latest versions of the charts.

8. Install a Release from a Specific Repository

helm install <release-name> <repo>/<chart> [flags]
  • Example: 
    helm install vatanboard-rls vatanboard-helm/vatanboard
  • Description: Installs a chart from a specific Helm repository. In this case, it installs vatanboard from the vatanboard-helm repository.

9. Search for a Chart in a Repository

helm search repo <chart-name>
  • Example: 
    helm search repo --versions
helm search repo --versions | grep vatanboard
  • Description: Searches for a chart in the Helm repository, optionally filtering by versions.

10. Install with Custom Values

helm install <release-name> <chart> --set <key>=<value> [flags]
  • Example: 
    helm install vatanboard-rls vatanboard-helm/vatanboard -n vatanboard-ns --set deployment.backend.imageTag=8fcb21dade40a55feeeedcf70585d9ba8ad62980
  • Description: Installs a chart with custom values passed as key-value pairs. In this case, it sets a custom imageTag for the backend deployment.

11. Uninstall with Namespace

helm uninstall <release-name> -n <namespace>
  • Example: 
    helm uninstall vatanboard-rls -n vatanboard-ns
  • Description: Uninstalls a release from a specific namespace (vatanboard-ns).

12. Install with Namespace

helm install <release-name> <chart> -n <namespace>
  • Example: 
    helm install vatanboard-rls vatanboard-helm/vatanboard -n vatanboard-ns
  • Description: Installs a Helm release into a specific namespace (vatanboard-ns).

13. List All Repositories

helm repo list
  • Example: 
    helm repo list
  • Description: Lists all Helm repositories that have been added.

14. Upgrade a Release with Namespace and Custom Values

helm upgrade <release-name> <chart> -n <namespace> --set <key>=<value>
  • Example: 
    helm upgrade vatanboard-rls vatanboard-helm/vatanboard -n vatanboard-ns --set deployment.backend.imageTag=8fcb21dade40a55feeeedcf70585d9ba8ad62980
  • Description: Upgrades a release with a custom value passed and specifies a namespace.

15. Download a Helm Chart

helm pull <repo>/<chart> [--version <chart-version>] [--untar]
  • Example: 
    helm pull stable/nginx-ingress --untar
  • Description: Downloads the specified Helm chart. The --untar flag extracts the chart after downloading.

16. Get the Entire values.yaml File of a Chart

helm show values <repo>/<chart>
  • Example: 
    helm show values stable/nginx-ingress
  • Description: Retrieves the full values.yaml file for the given chart.

17. Install or Upgrade a Release Using a Custom values.yaml File

helm install <release-name> <chart> -f <custom-values.yaml>
helm upgrade <release-name> <chart> -f <custom-values.yaml>
  • Example: 
    helm install vatanboard-rls vatanboard-helm/vatanboard -f custom-values.yaml
helm upgrade vatanboard-rls vatanboard-helm/vatanboard -f custom-values.yaml
  • Description: Installs or upgrades a Helm release using a custom values.yaml file instead of passing key-value pairs individually.
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