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docs: Link to the Flux GitHub Action documentation
Signed-off-by: Stefan Prodan <stefan.prodan@gmail.com>
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| # Flux GitHub Action | ||
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| Usage: | ||
| To install the latest Flux CLI on Linux, macOS or Windows GitHub runners: | ||
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| ```yaml | ||
| steps: | ||
| - name: Setup Flux CLI | ||
| uses: fluxcd/flux2/action@main | ||
| - name: Run Flux commands | ||
| run: flux -v | ||
| steps: | ||
| - name: Setup Flux CLI | ||
| uses: fluxcd/flux2/action@main | ||
| with: | ||
| version: 'latest' | ||
| - name: Run Flux CLI | ||
| run: flux version --client | ||
| ``` | ||
| The latest stable version of the `flux` binary is downloaded from | ||
| GitHub [releases](https://github.com/fluxcd/flux2/releases) | ||
| and placed at `/usr/local/bin/flux`. | ||
| The Flux GitHub Action can be used to automate various tasks in CI such as: | ||
| Note that this action can only be used on GitHub **Linux** runners. | ||
| You can change the arch (defaults to `amd64`) with: | ||
| - [Automate Flux upgrades on clusters via Pull Requests](https://fluxcd.io/flux/flux-gh-action/#automate-flux-updates) | ||
| - [Push Kubernetes manifests to container registries](https://fluxcd.io/flux/flux-gh-action/#push-kubernetes-manifests-to-container-registries) | ||
| - [Run end-to-end testing with Flux and Kubernetes Kind](https://fluxcd.io/flux/flux-gh-action/#end-to-end-testing) | ||
| ```yaml | ||
| steps: | ||
| - name: Setup Flux CLI | ||
| uses: fluxcd/flux2/action@main | ||
| with: | ||
| arch: arm64 # can be amd64, arm64 or arm | ||
| ``` | ||
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| You can download a specific version with: | ||
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| ```yaml | ||
| steps: | ||
| - name: Setup Flux CLI | ||
| uses: fluxcd/flux2/action@main | ||
| with: | ||
| version: 0.32.0 | ||
| ``` | ||
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| You can also authenticate against the GitHub API using GitHub Actions' `GITHUB_TOKEN` secret. | ||
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| For more information, please [read about the GitHub token secret](https://docs.github.com/en/actions/security-guides/automatic-token-authentication#about-the-github_token-secret). | ||
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| ```yaml | ||
| steps: | ||
| - name: Setup Flux CLI | ||
| uses: fluxcd/flux2/action@main | ||
| with: | ||
| token: ${{ secrets.GITHUB_TOKEN }} | ||
| ``` | ||
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| This is useful if you are seeing failures on shared runners, those failures are usually API limits being hit. | ||
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| ### Automate Flux updates | ||
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| Example workflow for updating Flux's components generated with `flux bootstrap --path=clusters/production`: | ||
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| ```yaml | ||
| name: update-flux | ||
| on: | ||
| workflow_dispatch: | ||
| schedule: | ||
| - cron: "0 * * * *" | ||
| permissions: | ||
| contents: write | ||
| pull-requests: write | ||
| jobs: | ||
| components: | ||
| runs-on: ubuntu-latest | ||
| steps: | ||
| - name: Check out code | ||
| uses: actions/checkout@v3 | ||
| - name: Setup Flux CLI | ||
| uses: fluxcd/flux2/action@main | ||
| - name: Check for updates | ||
| id: update | ||
| run: | | ||
| flux install \ | ||
| --export > ./clusters/production/flux-system/gotk-components.yaml | ||
| VERSION="$(flux -v)" | ||
| echo "flux_version=$VERSION" >> $GITHUB_OUTPUT | ||
| - name: Create Pull Request | ||
| uses: peter-evans/create-pull-request@v4 | ||
| with: | ||
| token: ${{ secrets.GITHUB_TOKEN }} | ||
| branch: update-flux | ||
| commit-message: Update to ${{ steps.update.outputs.flux_version }} | ||
| title: Update to ${{ steps.update.outputs.flux_version }} | ||
| body: | | ||
| ${{ steps.update.outputs.flux_version }} | ||
| ``` | ||
|
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| ### Push Kubernetes manifests to container registries | ||
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| Example workflow for publishing Kubernetes manifests bundled as OCI artifacts to GitHub Container Registry: | ||
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| ```yaml | ||
| name: push-artifact-staging | ||
| on: | ||
| push: | ||
| branches: | ||
| - 'main' | ||
| permissions: | ||
| packages: write # needed for ghcr.io access | ||
| env: | ||
| OCI_REPO: "oci://ghcr.io/my-org/manifests/${{ github.event.repository.name }}" | ||
| jobs: | ||
| kubernetes: | ||
| runs-on: ubuntu-latest | ||
| steps: | ||
| - name: Checkout | ||
| uses: actions/checkout@v3 | ||
| - name: Setup Flux CLI | ||
| uses: fluxcd/flux2/action@main | ||
| - name: Login to GHCR | ||
| uses: docker/login-action@v2 | ||
| with: | ||
| registry: ghcr.io | ||
| username: ${{ github.actor }} | ||
| password: ${{ secrets.GITHUB_TOKEN }} | ||
| - name: Generate manifests | ||
| run: | | ||
| kustomize build ./manifests/staging > ./deploy/app.yaml | ||
| - name: Push manifests | ||
| run: | | ||
| flux push artifact $OCI_REPO:$(git rev-parse --short HEAD) \ | ||
| --path="./deploy" \ | ||
| --source="$(git config --get remote.origin.url)" \ | ||
| --revision="$(git branch --show-current)@sha1:$(git rev-parse HEAD)" | ||
| - name: Deploy manifests to staging | ||
| run: | | ||
| flux tag artifact $OCI_REPO:$(git rev-parse --short HEAD) --tag staging | ||
| ``` | ||
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| ### Push and sign Kubernetes manifests to container registries | ||
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| Example workflow for publishing Kubernetes manifests bundled as OCI artifacts | ||
| which are signed with Cosign and GitHub OIDC: | ||
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| ```yaml | ||
| name: push-sign-artifact | ||
| on: | ||
| push: | ||
| branches: | ||
| - 'main' | ||
| permissions: | ||
| packages: write # needed for ghcr.io access | ||
| id-token: write # needed for keyless signing | ||
| env: | ||
| OCI_REPO: "oci://ghcr.io/my-org/manifests/${{ github.event.repository.name }}" | ||
| jobs: | ||
| kubernetes: | ||
| runs-on: ubuntu-latest | ||
| steps: | ||
| - name: Checkout | ||
| uses: actions/checkout@v3 | ||
| - name: Setup Flux CLI | ||
| uses: fluxcd/flux2/action@main | ||
| - name: Setup Cosign | ||
| uses: sigstore/cosign-installer@main | ||
| - name: Login to GHCR | ||
| uses: docker/login-action@v2 | ||
| with: | ||
| registry: ghcr.io | ||
| username: ${{ github.actor }} | ||
| password: ${{ secrets.GITHUB_TOKEN }} | ||
| - name: Push and sign manifests | ||
| run: | | ||
| digest_url=$(flux push artifact \ | ||
| $OCI_REPO:$(git rev-parse --short HEAD) \ | ||
| --path="./manifests" \ | ||
| --source="$(git config --get remote.origin.url)" \ | ||
| --revision="$(git branch --show-current)@sha1:$(git rev-parse HEAD)" |\ | ||
| jq -r '. | .repository + "@" + .digest') | ||
| cosign sign $digest_url | ||
| ``` | ||
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| ### End-to-end testing | ||
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| Example workflow for running Flux in Kubernetes Kind: | ||
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| ```yaml | ||
| name: e2e | ||
| on: | ||
| push: | ||
| branches: | ||
| - '*' | ||
| jobs: | ||
| kubernetes: | ||
| runs-on: ubuntu-latest | ||
| steps: | ||
| - name: Checkout | ||
| uses: actions/checkout@v3 | ||
| - name: Setup Flux CLI | ||
| uses: fluxcd/flux2/action@main | ||
| - name: Setup Kubernetes Kind | ||
| uses: engineerd/setup-kind@v0.5.0 | ||
| - name: Install Flux in Kubernetes Kind | ||
| run: flux install | ||
| ``` | ||
| For more information please see the [Flux GitHub Action documentation](/flux/flux-gh-action.md). | ||
| A complete e2e testing workflow is available here | ||
| [flux2-kustomize-helm-example](https://github.com/fluxcd/flux2-kustomize-helm-example/blob/main/.github/workflows/e2e.yaml) |