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https://github.com/helm/chart-releaser-action

A GitHub Action to turn a GitHub project into a self-hosted Helm chart repo, using helm/chart-releaser CLI tool
https://github.com/helm/chart-releaser-action

actions charts ci-cd github-pages helm helm-repositories kubernetes

Last synced: 28 days ago
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A GitHub Action to turn a GitHub project into a self-hosted Helm chart repo, using helm/chart-releaser CLI tool

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# _chart-releaser_ Action



A GitHub action to turn a GitHub project into a self-hosted Helm chart repo, using [helm/chart-releaser](https://github.com/helm/chart-releaser) CLI tool.



## Usage



### Pre-requisites



1. A GitHub repo containing a directory with your Helm charts (default is a folder named `/charts`, if you want to

   maintain your charts in a different directory, you must include a `charts_dir` input in the workflow).

1. A GitHub branch called `gh-pages` to store the published charts.

1. In your repo, go to Settings/Pages. Change the `Source` `Branch` to `gh-pages`.

1. Create a workflow `.yml` file in your `.github/workflows` directory. An [example workflow](#example-workflow) is available below.

   For more information, reference the GitHub Help Documentation for [Creating a workflow file](https://help.github.com/en/articles/configuring-a-workflow#creating-a-workflow-file)



### Inputs



- `version`: The chart-releaser version to use (default: v1.6.0)

- `config`: Optional config file for chart-releaser. For more information on the config file, see the [documentation](https://github.com/helm/chart-releaser#config-file)

- `charts_dir`: The charts directory

- `skip_packaging`: This option, when populated, will skip the packaging step. This allows you to do more advanced packaging of your charts (for example, with the `helm package` command) before this action runs. This action will only handle the indexing and publishing steps.

- `skip_existing`: Skip package upload if release/tag already exists

- `skip_upload`: This option, when populated, will skip the upload step. This allows you to do more advanced uploading of your charts (for exemple with OCI based repositories) which doen't require the `index.yaml`.

- `mark_as_latest`: When you set this to `false`, it will mark the created GitHub release not as 'latest'.

- `packages_with_index`: When you set this to `true`, it will upload chart packages directly into publishing branch.

- `pages_branch`: Name of the branch to be used to push the index and artifacts. (default to: gh-pages but it is not set in the action it is a default value for the chart-releaser binary)



### Outputs



- `changed_charts`: A comma-separated list of charts that were released on this run. Will be an empty string if no updates were detected, will be unset if `--skip_packaging` is used: in the latter case your custom packaging step is responsible for setting its own outputs if you need them.

- `chart_version`: The version of the most recently generated charts; will be set even if no charts have been updated since the last run.



### Environment variables



- `CR_TOKEN` (required): The GitHub token of this repository (`${{ secrets.GITHUB_TOKEN }}`)



For more information on environment variables, see the [documentation](https://github.com/helm/chart-releaser#environment-variables).



### Example Workflow



Create a workflow (eg: `.github/workflows/release.yml`):



```yaml

name: Release Charts



on:

  push:

    branches:

      - main



jobs:

  release:

    # depending on default permission settings for your org (contents being read-only or read-write for workloads), you will have to add permissions

    # see: https://docs.github.com/en/actions/security-guides/automatic-token-authentication#modifying-the-permissions-for-the-github_token

    permissions:

      contents: write

    runs-on: ubuntu-latest

    steps:

      - name: Checkout

        uses: actions/checkout@v3

        with:

          fetch-depth: 0



      - name: Configure Git

        run: |

          git config user.name "$GITHUB_ACTOR"

          git config user.email "[email protected]"



      - name: Install Helm

        uses: azure/setup-helm@v4

        env:

          GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"



      - name: Run chart-releaser

        uses: helm/[email protected]

        env:

          CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"

```



This uses [@helm/chart-releaser-action](https://www.github.com/helm/chart-releaser-action) to turn your GitHub project into a self-hosted Helm chart repo.

It does this – during every push to `main` – by checking each chart in your project, and whenever there's a new chart version, creates a corresponding [GitHub release](https://help.github.com/en/github/administering-a-repository/about-releases) named for the chart version, adds Helm chart artifacts to the release, and creates or updates an `index.yaml` file with metadata about those releases, which is then hosted on GitHub Pages. You do not need an `index.yaml` file in `main` at all because it is managed in the `gh-pages` branch.



#### Example using custom config



`workflow.yml`:



```yaml

- name: Run chart-releaser

  uses: helm/[email protected]

  with:

    charts_dir: charts

    config: cr.yaml

  env:

    CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"

```



`cr.yaml`:



```yaml

owner: myaccount

git-base-url: https://api.github.com/

```



For options see [config-file](https://github.com/helm/chart-releaser#config-file).



## Code of conduct



Participation in the Helm community is governed by the [Code of Conduct](CODE_OF_CONDUCT.md).