Helm repo
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Internal
Overview
Revised for Helm 3
Caching repositories locally is useful when installing charts and specifying the chart to be installed using the name of the locally cached repository and the name of the chart. However, charts can be installed directly from the remote repository, without having to add (cache) the repository locally. The repositories are cached locally with helm repo add command, but the cache is not automatically kept up to date in any way, it has to be explicitly updated with helm repo update.
List Repositories Helm is Configured With
helm repo list
List All Charts in a Repository
Add a New Repository
helm repo add <repository-name> <repository-url>
helm repo add dev https://example.com/dev-charts
Adding a Repository that Requires Authentication
Helm does not allow specifying authentication credentials alongside the repository URL in Chart.yaml, so when dependencies need to be pulled from an authenticated repository, an authenticated managed repository must be used. The credentials are specified when the repository is locally added. The credentials are retained in the repository configuration, and they do not have to be specified every time the dependencies are updated with helm dependency update.
helm repo add <repository-name> <repository-url> --username <username> --password <password>
Note that the repository must expose an index.yaml, otherwise the above command will fail with .../index.yaml 404 Not Found.
To test that the authentication works:
helm search repo <repository-name>
<repository-url> does not work when used with the helm search command.
What Happens when a New Repository is Added
A new entry is added to repositories.yaml.
Update the Local Repository Cache
The command reaches out to remote repositories Helm installation is configured with and gets the latest information about charts. Information is cached locally
helm [--debug] repo update
Find what Versions of a Specific Chart are Available in a Repository
One method is to download (or look on-line) at the repository index and do a text search.
Remove a Locally Configured Repository
helm repo remove <repository-name>
Generate an Index File
helm repo index <chart-dir>
Generates an index from files in the directory specified as argument, which is expected to contain packaged charts.
Add a Chart to a Remote Repository
helm repo add my-chart https://some-helm-repository.com