helm

Create a helm chart

$ helm create [chart_name]

$ helm repo add [repository_name]

$ helm repo list

$ helm repo update

$ helm repo remove [repository_name]

$ helm install [name] [repository_name]/[chart_name]

$ helm get [chart_release_name]

$ helm dependency update

helm [command] [flags]

--debug
    Enable verbose output for debugging.

--kube-context string
    Name of the kubeconfig context to use.

--kubeconfig string
    Path to the kubeconfig file to use for CLI requests.

--namespace string
    Namespace scope for this request.

--burst-limit int
    Client-side default throttling limit.

--registry-config string
    Path to the registry config file.

--repository-cache string
    Path to the file containing cached repository indexes.

--repository-config string
    Path to the file containing repository names and URLs.

Helm is a package manager for Kubernetes, allowing you to manage Kubernetes applications through Helm Charts. A Helm Chart is a collection of files that describe a related set of Kubernetes resources. Helm Charts help you define, install, and upgrade even the most complex Kubernetes application.

Helm simplifies deployment and management by bundling application configurations into reusable packages. Think of it like apt, yum, or homebrew, but for Kubernetes. It manages application dependencies, versioning, and updates. Helm allows users to easily share applications by creating publicly available charts.

The primary use case is to manage complex kubernetes deployments. Helm facilitates installation of software such as databases, messaging queues, or full application stacks. It can easily upgrade software. It can uninstall applications. It provides rollback capabilities.

Helm relies on Tiller (Helm 2) or Kubernetes API access (Helm 3) for deployment. Incorrect configuration of access control can lead to security vulnerabilities. Upgrading from Helm 2 to Helm 3 requires migration due to architectural differences (Tiller removal).

helm install: Install a chart.
helm upgrade: Upgrade a release.
helm uninstall: Uninstall a release.
helm search: Search for charts.
helm repo: Manage chart repositories.
helm template: Locally render templates.

A Helm chart typically includes a `Chart.yaml` file, which contains metadata about the chart; a `values.yaml` file, which holds the default configuration values; and a `templates/` directory, which contains the Kubernetes manifest templates.

helm version print the client and server version information.
If you use Helm v3 server version is not available

Helm was originally created by Deis as a tool to simplify the deployment of applications on Kubernetes. It was later donated to the Cloud Native Computing Foundation (CNCF). Helm 3, a significant rewrite, removed the server-side component (Tiller) to improve security and simplify operations.

kubectl(1)