SSL Certificate Management for Azure AI Web Services.

Question

Pulumi · Accepted Answer

SSL certificates are an essential aspect of securing web services, as they enable encrypted communication between the server and clients. In an Azure environment, managing SSL certificates for your web services involves tasks like creating or importing certificates, binding them to your services, and automating their renewal.

For Azure AI Web Services, you would typically work with Azure App Service, which is a fully managed platform for building, deploying, and scaling web apps. SSL certificate management in Azure App Service can be handled with the `AppServiceEnvironment`, `Certificate`, and associated resources from the `azure-native` Pulumi provider.

The `azure-native.web.Certificate` resource allows you to manage an SSL certificate in Azure. You can use this resource to import an existing certificate into Azure App Service or create a new certificate managed by Azure. For example, if you have an AI Web Service deployed through Azure App Service, you would use a certificate to secure the custom domain bound to the service.

Once you have the certificate in place, you would assign it to the App Service using the `azure-native.web.AppServiceCertificateBinding` resource, which creates a binding between the certificate and an App Service.

Here's a starting point using Pulumi with Python showing how to create a new SSL certificate, import it into the Azure Web Service, and attach it to an existing App Service. Please ensure that you already have a service principal or managed identity configured with appropriate permissions to create and manage these resources, and you've set up your Pulumi Azure credentials.

Before running this Pulumi program, you should have an App Service and a custom domain already configured. Replace placeholders like `example_resource_group`, `app_service_name`, and `custom_domain_name` with your actual Azure resource group's name, Azure App Service's name, and the custom domain name respectively.

```python
import pulumi
import pulumi_azure_native as azure_native

# Provide your resource group name and location
resource_group_name = 'example_resource_group'
location = 'West US'

# Provide the details for the SSL certificate that you want to create
certificate_name = 'example-certificate-name'
pfx_blob_data = 'contents-of-your-certificate-file-in-base64' # should be base64 encoded content of your .pfx file
certificate_password = 'your-certificate-password' # the password to your .pfx file

# Resource group for the certificate
resource_group = azure_native.resources.ResourceGroup('resource-group',
    resource_group_name=resource_group_name,
    location=location)

# Create a new SSL certificate (or import an existing one)
certificate = azure_native.web.Certificate('ssl-certificate',
    resource_group_name=resource_group_name,
    location=location,
    name=certificate_name,
    password=certificate_password,
    pfx_blob=pulumi.Output.secret(pfx_blob_data))

# Create the binding between the certificate and the App Service
app_service_certificate_binding = azure_native.web.AppServiceCertificateBinding('app-service-certificate-binding',
    resource_group_name=resource_group_name,
    certificate_thumbprint=certificate.thumbprint,
    name='ssl-binding',
    app_service_name='app_service_name', # provide your App Service name
    hostname_binding_name='custom_domain_name') # provide the custom domain name you want the certificate bound to

# Export the DNS name to use in creating your CNAME record
pulumi.export('certificate_dns_name', pulumi.Output.secret(certificate.canonical_name))
```

This program first defines the resource group where the certificate will be stored. Then, it creates a new `Certificate` object, which includes importing the actual certificate file as a base64-encoded blob and providing the password. Finally, it creates a 'CertificateBinding' to attach the SSL certificate to your App Service.

Remember to replace placeholders with your actual data and provide your PFX blob and password. It's crucial to handle the certificate data securely, so it's recommended to use secrets management in Pulumi or Azure for the certificate contents and password.

To run this Pulumi program:

1. Install Pulumi and configure it with your Azure account.
2. Save this script in a file with a `.py` extension.
3. Run `pulumi up` from the command line in the same directory where your script is located.

The Pulumi CLI will prompt you to confirm the deployment. Once you confirm, it will provision the specified resources in your Azure account. After deployment, the output `certificate_dns_name` will provide you with the DNS name for your certificate, which you can use for configuring DNS records if necessary.