GitHub Action for deploying Machine Learning Models to Azure

Usage

The Deploy Machine Learning Models to Azure action will deploy your model on Azure Machine Learning using GitHub Actions.

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This repository contains GitHub Action for deploying Machine Learning Models to Azure Machine Learning and creates a real-time endpoint on the model to integrate models in other systems. The endpoint can be hosted either on an Azure Container Instance or on an Azure Kubernetes Service.

This GitHub Action also allows you to provide a python script that executes tests against the Webservice endpoint after the model deployment has completed successfully. You can enable tests by setting the parameter test_enabled to true. In addition to that, you have to provide a python script (default code/test/test.py) which includes a function (default def main(webservice):) that describes your tests that you want to execute against the service object. The python script gets the webservice object injected. The action fails, if the test script fails.

Dependencies on other GitHub Actions

• Checkout Checkout your Git repository content into GitHub Actions agent.
• aml-workspace This action requires an Azure Machine Learning workspace to be present. You can either create a new one or re-use an existing one using the action.
• aml-registermodel Before deploying the model, you need to register the model with Azure Machine Learning. If not already registered, you can use this action and use its output in deploy action.
• aml-compute You don't need this if you want to host your endpoint on an ACI instance. But, if you want to host your endpoint on an AKS cluster, you can manage the AKS Cluster via the action.

Create Azure Machine Learning and deploy an machine learning model using GitHub Actions

This action is one in a series of actions that can be used to setup an ML Ops process. We suggest getting started with one of our template repositories, which will allow you to create an ML Ops process in less than 5 minutes.

1. Simple template repository: ml-template-azure

   Go to this template and follow the getting started guide to setup an ML Ops process within minutes and learn how to use the Azure Machine Learning GitHub Actions in combination. This template demonstrates a very simple process for training and deploying machine learning models.

2. Advanced template repository: aml-template

   This template demonstrates how approval processes can be included in the process and how training and deployment workflows can be splitted. It also shows how workflows (e.g. deployment) can be triggered from pull requests. More enhancements will be added to this template in the future to make it more enterprise ready.

Example workflow

name: My Workflow
on: [push, pull_request]
jobs:
  build:
    runs-on: ubuntu-latest
    steps:
    # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
    - name: Check Out Repository
      id: checkout_repository
      uses: actions/checkout@v2

    # AML Workspace Action
    - uses: Azure/aml-workspace@v1
      id: aml_workspace
      with:
        azure_credentials: ${{ secrets.AZURE_CREDENTIALS }}
    
    # AML Register Model Action
    - uses: Azure/aml-registermodel@v1
      id: aml_registermodel
      with:
        azure_credentials: ${{ secrets.AZURE_CREDENTIALS }}
        run_id:  "<your-run-id>"
        experiment_name: "<your-experiment-name>"
    
    # Deploy model in Azure Machine Learning to ACI
    - name: Deploy model
      id: aml_deploy
      uses: Azure/aml-deploy@v1
      with:
        # required inputs
        azure_credentials: ${{ secrets.AZURE_CREDENTIALS }}
        model_name:  ${{ steps.aml_registermodel.outputs.model_name }}
        model_version: ${{ steps.aml_registermodel.outputs.model_version }}
        # optional inputs
        parameters_file: "deploy.json"

Inputs

Input	Required	Default	Description
azure_credentials	x	-	Output of az ad sp create-for-rbac --name <your-sp-name> --role contributor --scopes /subscriptions/<your-subscriptionId>/resourceGroups/<your-rg> --sdk-auth. This should be stored in your secrets
model_name	x	-	Name of the model that will be deployed. You will get it as an output of register model action as in above example workflow.
model_version	x	-	Version of the model that will be deployed. You will get it as an output of register model action as in above example workflow.
parameters_file		"deploy.json"	We expect a JSON file in the .cloud/.azure folder in root of your repository specifying your model deployment details. If you have want to provide these details in a file other than "deploy.json" you need to provide this input in the action.

azure_credentials ( Azure Credentials )

Azure credentials are required to connect to your Azure Machine Learning Workspace. These may have been created for an action you are already using in your repository, if so, you can skip the steps below.

Install the Azure CLI on your computer or use the Cloud CLI and execute the following command to generate the required credentials:

# Replace {service-principal-name}, {subscription-id} and {resource-group} with your Azure subscription id and resource group name and any name for your service principle
az ad sp create-for-rbac --name {service-principal-name} \
                         --role contributor \
                         --scopes /subscriptions/{subscription-id}/resourceGroups/{resource-group} \
                         --sdk-auth

This will generate the following JSON output:

{
  "clientId": "<GUID>",
  "clientSecret": "<GUID>",
  "subscriptionId": "<GUID>",
  "tenantId": "<GUID>",
  (...)
}

Add this JSON output as a secret with the name AZURE_CREDENTIALS in your GitHub repository.

parameters_file (Parameters File)

The action tries to load a JSON file in the .cloud/.azure folder in your repository, which specifies details for the model deployment to your Azure Machine Learning Workspace. By default, the action expects a file with the name deploy.json. If your JSON file has a different name, you can specify it with this parameter. Note that none of these values are required and in the absence, defaults will be created with a combination of the repo name and branch name.

A sample file can be found in this repository in the folder .cloud/.azure. There are separate parameters that are used for the ACI deployment, the AKS deployment and some that are common for both deployment options.

Common parameters

Parameter	Required	Allowed Values	Default	Description
name		str	<REPOSITORY_NAME>-<BRANCH_NAME>	The name to give the deployed service. Must be unique to the workspace, only consist of lowercase letters, numbers, or dashes, start with a letter, and be between 3 and 32 characters long.
deployment_compute_target	(for AKS deployment)	str	null	Name of the compute target to deploy the webservice to. As Azure Container Instances has no associated ComputeTarget, leave this parameter as null to deploy to Azure Container Instances.
inference_source_directory		str	"code/deploy/"	The path to the folder that contains all files to create the image.
inference_entry_script		str	"score.py"	The path to a local file in your repository that contains the code to run for the image and score the data. This path is relative to the specified source directory. The python script has to define an init and a run function. A sample can be found in the template repositories.
conda_file		str	"environment.yml"	The path to a local file in your repository containing a conda environment definition to use for the image. This path is relative to the specified source directory.
extra_docker_file_steps		str	null	The path to a local file in your repository containing additional Docker steps to run when setting up image. This path is relative to the specified source directory.
enable_gpu		bool	false	Indicates whether to enable GPU support in the image. The GPU image must be used on Microsoft Azure Services such as Azure Container Instances, Azure Machine Learning Compute, Azure Virtual Machines, and Azure Kubernetes Service.
cuda_version		str	"9.1" if enable_gpu is set to true	The Version of CUDA to install for images that need GPU support. The GPU image must be used on Microsoft Azure Services such as Azure Container Instances, Azure Machine Learning Compute, Azure Virtual Machines, and Azure Kubernetes Service. Supported versions are 9.0, 9.1, and 10.0.
runtime		str: "python" or "spark-py"	"python"	The runtime to use for the image.
custom_base_image		str	null	A custom Docker image to be used as base image. If no base image is given then the base image will be used based off of given runtime parameter.
model_data_collection_enabled		bool	false	Whether or not to enable model data collection for this Webservice.
authentication_enabled		bool	false for ACI, true for AKS	Whether or not to enable key auth for this Webservice.
app_insights_enabled		bool	false	Whether or not to enable Application Insights logging for this Webservice.
cpu_cores		float: ]0.0, inf[	0.1	The number of CPU cores to allocate for this Webservice. Can be a decimal.
memory_gb		float: ]0.0, inf[	0.5	The amount of memory (in GB) to allocate for this Webservice. Can be a decimal.
delete_service_after_deployment		bool	false	Indicates whether the service gets deleted after the deployment completed successfully.
tags		dict: {"": "", ...}	null	Dictionary of key value tags to give this Webservice.
properties		dict: {"": "", ...}		Dictionary of key value properties to give this Webservice. These properties cannot be changed after deployment, however new key value pairs can be added.
description		str	null	A description to give this Webservice and image.
test_enabled		bool	false	Whether to run tests for this model deployment and the created real-time endpoint.
test_file_path		str	"code/test/test.py"	Path to the python script in your repository in which you define your own tests that you want to run against the webservice endpoint. The GitHub Action fails, if your script fails.
test_file_function_name		str	"main"	Name of the function in your python script in your repository in which you define your own tests that you want to run against the webservice endpoint. The function gets the webservice object injected and allows you to run tests against the scoring uri. The GitHub Action fails, if your script fails.

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ACI specific parameters

ACI is the default deployment resource. A sample file for an aci deployment can be found in the .cloud/.azure folder.

Parameter	Required	Allowed Values	Default	Description
location		str: supported region	workspace location	The Azure region to deploy this Webservice to.
ssl_enabled		bool	false	Whether or not to enable SSL for this Webservice.
ssl_cert_pem_file		str	null	A file path to a file containing cert information for SSL validation. Must provide all three CName, cert file, and key file to enable SSL validation.
ssl_key_pem_file		str	null	A file path to a file containing key information for SSL validation. Must provide all three CName, cert file, and key file to enable SSL validation.
ssl_cname		str	null	A CName to use if enabling SSL validation on the cluster. Must provide all three CName, cert file, and key file to enable SSL validation.
dns_name_label		str	null	The DNS name label for the scoring endpoint. If not specified a unique DNS name label will be generated for the scoring endpoint.

Please visit this website for more details.

AKS Deployment

For the deployment of the model to AKS, you must configure an AKS resource and specify the name of the AKS cluster with the deployment_compute_target parameter. Additional parameters allow you to finetune your deployment on AKS with options like autoscaling and the liveness probe requirements. These will be set to default parameters if not provided.

Parameter	Required	Allowed Values	Default	Description
gpu_cores		int: [0, inf[	1	The number of GPU cores to allocate for this Webservice.
autoscale_enabled		bool	true if num_replicas is null	Whether to enable autoscale for this Webservice.
autoscale_min_replicas		int: [1, inf[	1	The minimum number of containers to use when autoscaling this Webservice.
autoscale_max_replicas		int: [1, inf[	10	The maximum number of containers to use when autoscaling this Webservice.
autoscale_refresh_seconds		int: [1, inf[	1	How often the autoscaler should attempt to scale this Webservice (in seconds).
autoscale_target_utilization		int: [1, 100]	70	The target utilization (in percent out of 100) the autoscaler should attempt to maintain for this Webservice.
scoring_timeout_ms		int: [1, inf[	60000	A timeout in ms to enforce for scoring calls to this Webservice.
replica_max_concurrent_requests		int: [1, inf[	1	The number of maximum concurrent requests per replica to allow for this Webservice. Do not change this setting from the default value of 1 unless instructed by Microsoft Technical Support or a member of Azure Machine Learning team.
max_request_wait_time		int: [0, inf[	500	The maximum amount of time a request will stay in the queue (in milliseconds) before returning a 503 error.
num_replicas		int	null	The number of containers to allocate for this Webservice. No default, if this parameter is not set then the autoscaler is enabled by default.
period_seconds		int: [1, inf[	10	How often (in seconds) to perform the liveness probe.
initial_delay_seconds		int: [1, inf[	310	The number of seconds after the container has started before liveness probes are initiated.
timeout_seconds		int: [1, inf[	1	The number of seconds after which the liveness probe times out.
success_threshold		int: [1, inf[	1	The minimum consecutive successes for the liveness probe to be considered successful after having failed.
failure_threshold		int: [1, inf[	3	When a Pod starts and the liveness probe fails, Kubernetes will try failureThreshold times before giving up.
namespace		str	null	The Kubernetes namespace in which to deploy this Webservice: up to 63 lowercase alphanumeric ('a'-'z', '0'-'9') and hyphen ('-') characters. The first and last characters cannot be hyphens.
token_auth_enabled		bool	false	Whether to enable Token authentication for this Webservice. If this is enabled, users can access this Webservice by fetching an access token using their Azure Active Directory credentials.

Please visit this website for more details. More Information on autoscaling parameters can be found here and for liveness probe here.

Outputs

Output	Description
service_scoring_uri	Scoring URI of the webservice that was created (only provided if delete_service_after_test is set to False).
service_swagger_uri	Swagger Uri of the webservice that was created (only provided if delete_service_after_test is set to False).

Environment variables

Certain parameters are considered secrets and should therefore be passed as environment variables from your secrets, if you want to use custom values.

Environment variable	Required	Allowed Values	Default	Description
CONTAINER_REGISTRY_ADRESS		str	null	The DNS name or IP address of the Azure Container Registry (ACR). Required, if you specified a custom_base_image that is only available in your ACR.
CONTAINER_REGISTRY_USERNAME		str	null	The username for ACR. Required, if you specified a custom_base_image that is only available in your ACR.
CONTAINER_REGISTRY_PASSWORD		str	null	The password for ACR. Required, if you specified a custom_base_image that is only available in your ACR.
PRIMARY_KEY		str	null	A primary auth key to use for this Webservice. If not specified, Azure will automatically assign a key.
SECONDARY_KEY		str	null	A secondary auth key to use for this Webservice. If not specified, Azure will automatically assign a key.
CMK_VAULT_BASE_URL		str	null	Customer managed Key Vault base url. This value is ACI specific.
CMK_KEY_NAME		str	null	Customer managed key name. This value is ACI specific.
CMK_KEY_VERSION		str	null	Customer managed key version. This value is ACI specific.

Other Azure Machine Learning Actions

• aml-workspace - Connects to or creates a new workspace
• aml-compute - Connects to or creates a new compute target in Azure Machine Learning
• aml-run - Submits a ScriptRun, an Estimator or a Pipeline to Azure Machine Learning
• aml-registermodel - Registers a model to Azure Machine Learning
• aml-deploy - Deploys a model and creates an endpoint for the model

Contributing

This project welcomes contributions and suggestions. Most contributions require you to agree to a Contributor License Agreement (CLA) declaring that you have the right to, and actually do, grant us the rights to use your contribution. For details, visit https://cla.opensource.microsoft.com.

When you submit a pull request, a CLA bot will automatically determine whether you need to provide a CLA and decorate the PR appropriately (e.g., status check, comment). Simply follow the instructions provided by the bot. You will only need to do this once across all repos using our CLA.

This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact opencode@microsoft.com with any additional questions or comments.