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Github Actions: AWS CodeDeploy

Perform EC2 deployments from Github using AWS CodeDeploy.

YAML Definition

Add the following script section of your workflow file:

  uses: gamezop/aws-code-deploy@v1
  with:
    AWS_ACCESS_KEY_ID: '<string>' # Optional if already defined in the context.
    AWS_SECRET_ACCESS_KEY: '<string>' # Optional if already defined in the context.
    AWS_DEFAULT_REGION: '<string>' # Optional if already defined in the context.
    APPLICATION_NAME: '<string>'
    COMMAND: '<string>' # 'upload' or 'deploy'.

    # Common variables
    # S3_BUCKET: '<string>' # Optional.
    # VERSION_LABEL: '<string>' # Optional.
    # BUNDLE_TYPE: '<string>' # Optional.
    # DEBUG: '<boolean>' # Optional.
    # FOLDER: '<string>' # Optional.

    # Upload variables
    # ZIP_FILE: '<string>'

    # Deploy variables
    # DEPLOYMENT_GROUP: '<string>'
    # FILE_EXISTS_BEHAVIOR: '<string>' # Optional.
    # IGNORE_APPLICATION_STOP_FAILURES: '<boolean>' # Optional.
    # WAIT: '<boolean>' # Optional.
    # EXTRA_ARGS: '<string>' # Optional.

Variables

Common Variables

Variable Usage
AWS_ACCESS_KEY_ID (*) AWS access key id.
AWS_SECRET_ACCESS_KEY (*) AWS secret key.
AWS_DEFAULT_REGION (*) The AWS region code (us-east-1, us-west-2, etc.) of the region containing the AWS resource(s). For more information, see Regions and Endpoints in the Amazon Web Services General Reference.
APPLICATION_NAME (*) Application name.
COMMAND (*) Mode of operation: upload or deploy. See the Details section to understand how each mode works.
BUNDLE_TYPE The file type of the application revision stored in S3: zip, tar, tgz, YAML or JSON. Default: zip. BUNDLE_TYPE should correspond to ZIP_FILE extension.
DEBUG Turn on extra debug information. Default: false.
FOLDER If the deployable artifact is in any folder inside bucket, specify the folder name

(*) = required variable. This variable needs to be specified always when using the action.

Upload Command Variables

If COMMAND is set to upload:

Variable Usage
ZIP_FILE (*) The application artifact to upload to S3. Required for 'update'. Supported file types: zip, tar, tgz, YAML or JSON. File extension should correspond to BUNDLE_TYPE.
S3_BUCKET Override the S3 bucket that the application zip is uploaded to and deployed from. The default follows the convention <application_name>-codedeploy-deployment
VERSION_LABEL Override the name of the application revision in S3. The default follows the convention <application_name>-<build_number>-<commit>
(*) = required variable. This variable needs to be specified always when using the action.

Deploy Command Variables

If COMMAND is set to deploy:

Variable Usage
DEPLOYMENT_GROUP (*) Name of the Deployment Group.
S3_BUCKET Override the S3 bucket that the application zip is uploaded to and deployed from. The default follows the convention <application_name>-codedeploy-deployment
VERSION_LABEL Override the name of the application revision in S3. The default follows the convention <application_name>-<build_number>-<commit>
WAIT Wait for the deployment to complete. Default: true.
FILE_EXISTS_BEHAVIOR Action to take if files already exist in the deployment target location (defined in the AppSpec file). Allowed values: OVERWRITE, DISALLOW, RETAIN, default: DISALLOW.
IGNORE_APPLICATION_STOP_FAILURES Ignore any errors thrown when trying to stop the previous version of the deployed application. Default: false.
EXTRA_ARGS Additional args to pass to aws deploy create-deployment.
(*) = required variable. This variable needs to be specified always when using the action.

Details

The action provides 2 modes of operation:

Upload

Upload the application (as a zip file) to an S3 bucket, and register a new application revision with CodeDeploy.

By default, the zip file is uploaded to an S3 bucket following the naming convention <application_name>-codedeploy-deployment, which can be overridden with the S3_BUCKET parameter.

The uploaded zip artifact will be named <application_name>-<build_number>-<commit>, which can be overridden with the VERSION_LABEL parameter.

Deploy

Deploy a previously uploaded application revision to a deployment group.

By default, the revision S3 bucket containing the revision follows the naming convention <application_name>-codedeploy-deployment, which can be overridden with the S3_BUCKET parameter.

The action will attempt to deploy the application revision matching <application_name>-<build_number>-<commit>, which can be overridden with the VERSION_LABEL parameter, and wait until deployment has succeeded.

Caveats

  • When you use the deploy mode with the default VERSION_LABEL, the action will generate a new version label based on the build number and commit hash, so you need to make sure to also run the action with the upload mode withing the same workflow so the corresponding version is preset in S3. If you don't run the upload part of the action in the same workflow, you should use explicit VERSION_LABEL, for example, use semantic or other versioning scheme that is decoupled from the build number.

Prerequisites

  • An IAM user is configured with sufficient permissions to allow the action to perform a deployment to your application and upload artifacts to the S3 bucket.
  • You have configured a CodeDeploy Application and Deployment Group. Here is a simple tutorial from AWS: Deploy Code to a Virtual Machine
  • An S3 bucket has been set up to which deployment artifacts will be copied.

Examples

Upload

Upload the application build.zip to custom S3 bucket called bucket, with the application uploaded to S3 as app-1.0.0.

jobs:
  upload-app:
    runs-on: ubuntu-latest
    name: upload app on bucket
    steps:
      - name: use upload command
        id: upload
        uses: gamezop/aws-code-deploy@v1
        with:
          AWS_DEFAULT_REGION: '$AWS_DEFAULT_REGION'
          AWS_ACCESS_KEY_ID: $AWS_ACCESS_KEY_ID
          AWS_SECRET_ACCESS_KEY: $AWS_SECRET_ACCESS_KEY
          COMMAND: 'upload'
          APPLICATION_NAME: 'application'
          ZIP_FILE: 'build.zip'
          S3_BUCKET: 'bucket'
          VERSION_LABEL: 'app-1.0.0'

Deploy

Start a deployment and wait for it to finish. The application revision application-<build-number>-<commit> from the S3 bucket application-codedeploy-deployment will be deployed.

jobs:
  deploy-app:
    runs-on: ubuntu-latest
    name: deploy app
    steps:
      - name: use deploy command
        id: deploy
        uses: gamezop/aws-code-deploy@v1
        with:
          AWS_DEFAULT_REGION: '$AWS_DEFAULT_REGION'
          AWS_ACCESS_KEY_ID: $AWS_ACCESS_KEY_ID
          AWS_SECRET_ACCESS_KEY: $AWS_SECRET_ACCESS_KEY
          COMMAND: 'deploy'
          APPLICATION_NAME: 'application'
          DEPLOYMENT_GROUP: 'deployment-group'
          WAIT: 'true'