EPFL ENAC-IT Continuous Deployment

This action implements ENAC-IT's Continuous Deployment for your app on a given environment (dev, test, stage or prod). It can be used in EPFL-ENAC repositories, as well as any other repositories owned by other organizations.

if you push on the dev branch, it will update the images on the overlay dev in your enack8s-app-config
if you push on the test branch, same but overlay test
if you push on the stage branch, same but overlay stage
if you push a tag (create a release: v1.0.0 for instance, it will update the overlay prod

To use it in your repository, create a workflow file named .github/workflows/deploy.yml with the following content:

for repository with one image

You need to have a Dockerfile at the root of your repository, that's it, The image pushed to the registry will follow org/repo convention: ghcr.io/epfl-enac/epfl-luts/app-test:{sha256}

# https://github.com/EPFL-ENAC/epfl-enac-build-push-deploy-action#readme
name: deploy

'on':
  push:
    branches:
      - dev
      - test
      - stage
    tags: ['v*.*.*']

jobs:
  deploy:
    uses: EPFL-ENAC/epfl-enac-build-push-deploy-action/.github/workflows/[email protected]
    secrets:
      token: ${{ secrets.CD_TOKEN }}
    with:
      org: epfl-luts # your org
      repo: app-test # your app name, usual convention is name of your repository

for repository with multi images

You need to pass an additional inputs: 'build_context' which is a list of directories with a Dockerfile in it. The images pushed to the registry will follow org/repo convention:

ghcr.io/epfl-enac/ethz-alice/arema/backend:{sha256}
ghcr.io/epfl-enac/ethz-alice/arema/admin:{sha256}
ghcr.io/epfl-enac/ethz-alice/arema/frontend:{sha256}

# https://github.com/EPFL-ENAC/epfl-enac-build-push-deploy-action#readme
name: deploy

'on':
  push:
    branches:
      - dev
      - test
      - stage
    tags: ['v*.*.*']

jobs:
  deploy:
    uses: EPFL-ENAC/epfl-enac-build-push-deploy-action/.github/workflows/[email protected]
    secrets:
      token: ${{ secrets.CD_TOKEN }}
    with:
      org: ethz-alice # your org
      repo: arema # your app name, usual convention is name of your repository
      build_context: '["./backend", "./admin", "./frontend"]'

Inputs

org: The organization name given by ENAC-IT - (mandatory)
repo: The repository name given by ENAC-IT - (mandatory)
token: The secret associated with the deployment_id - (mandatory)

build_context:

The context of the build - (optional)
Currently we support max 9 contexts/ or build image per repository
The context is the path to the directory containing the Dockerfile. For example: ["./backend", "./admin", "./frontend"], default is ["."]
This will result in the following matrix automatically, where epfl-enac would be replaced by the repository owner name (in lowercase):

[
  {
          "Dockerfile": "./backend/Dockerfile",
          "context": "./backend",
          "image": "ghcr.io/epfl-enac/${{ENAC_IT4R_CD_ORG}}/${{ENAC_IT4R_CD_REPO}}/backend",
          "id": 1
        },
        {
          "Dockerfile": "./admin/Dockerfile",
          "context": "./admin",
          "image": "ghcr.io/epfl-enac/${{ENAC_IT4R_CD_ORG}}/${{ENAC_IT4R_CD_REPO}}/admin",
          "id": 2
        },
        {
          "Dockerfile": "./frontend/Dockerfile",
          "context": "./frontend",
          "image": "ghcr.io/epfl-enac/${{ENAC_IT4R_CD_ORG}}/${{ENAC_IT4R_CD_REPO}}/frontend",
          "id": 3
        }
    ]

in the default case (no context provided: will be ["."]), the matrix will be:

[
  {
          "Dockerfile": "./Dockerfile",
          "context": ".",
          "name": "${{ENAC_IT4R_CD_REPO}}",
          "image": "ghcr.io/epfl-enac/${{ENAC_IT4R_CD_ORG}}/${{ENAC_IT4R_CD_REPO}}",
          "id": 1
        }
    ]

create_pull_request:
- Create a pull request in the enack8s-app-config repository - (optional)
- Default is false, if you create a tag, it will automatically push to main without creating a PR, and deploy within the prod overlay in 5mn or so.

Create one secrets in your repository

Under your repository settings in /settings/secrets/actions

How it works

GitHub Action reusable workflow to automate the build and continuous deployment (CD) process for your application. The workflow will trigger on every push to the main or dev branch or whatever you defined and whenever a tag is created. Upon execution, it will perform the following:

Build the package as part of the CI process.
Trigger a webhook to initiate the CD process.

For CD, the webhook will call a GitHub Action in the enack8s-app-config repository. This action will update the manifests in the enack8s-app-config repository. There's no need to define a separate GitHub Action in the enack8s-app-config repository itself; the webhook-driven approach ensures all operations originate from your repository.

Using the update_manifest Hook The update_manifest GitHub Actions workflow is designed to update Kubernetes manifests in a repository based on specific events. This guide will explain how to use the update_manifest hook and the different options that can be passed in the client_payload.
Triggering the Hook The update_manifest hook is triggered by a repository_dispatch event. To trigger this event, you can use the GitHub API to send a POST request to the repository's dispatch endpoint.
Example API Request Here is an example of how to trigger the update_manifest hook using curl:

curl -X POST \
  -H "Accept: application/vnd.github.v3+json" \
  -H "Authorization: Bearer ${{ secrets.CD_TOKEN }}" \
          ${{ secrets.CD_URI }} \
  -d '{
    "event_type": "update-manifest",
    "client_payload": {
      "repo_name": "${{ secrets.CD_REPO }}",
      "repo_org": "${{ secrets.CD_ORG }}",
      "branch": "prod",
      "create_pull_request": true,
      "images": [
        {
          "name": "ghcr.io/epfl-enac/alice-ethz-***/***-api",
          "digest": "sha256:608087b53ee814372a55e45c73317410355d6ec5ec1273e8be918143264261f1",
          "ref_name": "dev"
        },
        {
          "name": "ghcr.io/epfl-enac/alice-ethz-***/***-admin",
          "digest": "sha256:0bc241c70114e076d53dc371f298873da7dec25ca51101591c81fee98aa68493",
          "ref_name": "dev",
        }]
    }
  }'

client_payload Options

The client_payload object contains several options that control how the manifest is updated:

repo_org: The organization or user that owns the repository.
repo_name: The name of the repository.
branch: The branch where the manifest is located. Typically, this will be prod for production deployments.
create_pull_request: A boolean value (true or false) that determines whether a pull request should be created for the changes.
images: An array of object that need to be updated in the manifest. following this schema { "name": "ghcr.io/epfl-enac/alice-ethz-/-api", "digest": "sha256:608087b53ee814372a55e45c73317410355d6ec5ec1273e8be918143264261f1", "ref_name": "v1.0.0" # The new tag or reference name to be used in the manifest (only for prod branch). }
Workflow Behavior
1. Checkout Repository: The workflow checks out the repository to the latest commit.
2. Install Dependencies: Installs necessary dependencies such as git, wget, curl, jq, and yq.
3. Modify Manifest:
- Navigates to the specified repository and branch.
- Updates the digest for the specified images in the kustomization.yaml file.
- If the branch is prod, it also updates the newTag field with the ref_name.
1. Commit and Push Changes:
- Commits the changes with a message indicating the update.
- If create_pull_request is true, it creates a new branch and pushes the changes.
- If create_pull_request is false, it pushes the changes directly to the main branch.
Example Usage To update the manifest for the prod branch with a new image digest and tag, and create a pull request for the changes:

curl -X POST \
  -H "Accept: application/vnd.github.v3+json" \
  -H "Authorization: token YOUR_GITHUB_TOKEN" \
  https://api.github.com/repos/YOUR_ORG/YOUR_REPO/dispatches \
  -d '{
    "event_type": "update-manifest",
    "client_payload": {
      "repo_org": "YOUR_ORG",
      "repo_name": "YOUR_REPO",
      "branch": "prod",
      "create_pull_request": true,
      "image": [
        {
          "name": "ghcr.io/epfl-enac/alice-ethz-***/***-api",
          "digest": "sha256:608087b53ee814372a55e45c73317410355d6ec5ec1273e8be918143264261f1",
          "ref_name": "v1.0.0"
        },
        {
          "name": "ghcr.io/epfl-enac/alice-ethz-***/***-admin",
          "digest": "sha256:0bc241c70114e076d53dc371f298873da7dec25ca51101591c81fee98aa68493",
          "ref_name": "dev",
        }]
    }
  }'

To update the manifest for a non-production branch without creating a pull request:

curl -X POST \
  -H "Accept: application/vnd.github.v3+json" \
  -H "Authorization: token YOUR_GITHUB_TOKEN" \
  https://api.github.com/repos/YOUR_ORG/YOUR_REPO/dispatches \
  -d '{
    "event_type": "update-manifest",
    "client_payload": {
      "repo_org": "YOUR_ORG",
      "repo_name": "YOUR_REPO",
      "branch": "dev",
      ....
    }
  }'

Note: Replace YOUR_GITHUB_TOKEN, YOUR_ORG, YOUR_REPO, and YOUR_DIGEST with the appropriate values for your repository.
Note: The update-manifest hook is designed to work with repositories that use kustomize to manage Kubernetes manifests. If your repository uses a different method for managing manifests, you may need to modify the workflow to suit your needs.
If you have any questions or need assistance with the update-manifest hook, please contact the EPFL-ENAC DevOps team.
If your branches or repository does not follow the standard pattern, you may need to modify the workflow to suit your needs.

How to update the manifest for a non-production branch without creating a pull request:

yq eval '(.images[] | select(.name == "ghcr.io/epfl-enac/resslab-astra-82001-frontend").newTag) = "1.2.666"' -i epfl-resslab/resslab-astra-82001-frontend/overlays/prod/kustomization.yaml

Add CD_TOKEN

This value is provided by ENAC-IT while discussing the hosting agreement.

Name		Name	Last commit message	Last commit date
Latest commit History 54 Commits
.github/workflows		.github/workflows
.gitignore		.gitignore
.lefthook.yml		.lefthook.yml
.yamllint.yml		.yamllint.yml
LICENSE		LICENSE
Makefile		Makefile
README.md		README.md
action.yml		action.yml
event.json		event.json
example_workflow.yml		example_workflow.yml

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EPFL ENAC-IT Continuous Deployment

for repository with one image

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Create one secrets in your repository

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EPFL ENAC-IT Continuous Deployment

for repository with one image

for repository with multi images

Inputs

Create one secrets in your repository

How it works

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