Domain Name Resolution for AI API Endpoints

Question

Pulumi · Accepted Answer

To set up domain name resolution for AI API endpoints, you will essentially be mapping a domain name to an IP address or endpoint where the AI API is hosted. The process typically involves registering a domain name, creating a DNS record to point to the API endpoint's IP address, and configuring any additional settings such as security or caching.

In this explanation, I will showcase how to accomplish this using the AWS Route 53 service with Pulumi's Infrastructure as Code (IaC) approach. Route 53 is a highly available and scalable cloud Domain Name System (DNS) web service, which can effectively be used to manage domain names and resolve them to your API endpoints hosted in AWS.

Below is a complete Pulumi program in Python that sets up domain name resolution for an AI API hosted on AWS. This includes registering a domain (for our example, we will use a pre-existing domain), setting up an A record (which points a domain name to an IPv4 address), and an AAAA record (which points a domain name to an IPv6 address).

Here's what each part of the program does:

1. **Import Pulumi and AWS SDKs**: Allows us to use Pulumi and AWS resources in our program.
2. **Create a Hosted Zone**: A hosted zone is a container for records, and in Route 53, it represents the set of records that are managed together.
3. **Create a DNS Record**: This is where you map your domain to the IP address of the AI API endpoint.

Please replace `"mydomain.com"` with your actual domain, and `"api.mydomain.com"` with your desired subdomain for the AI API endpoint. Also, `api_example_ip` is the placeholder for the IP address where your AI API is hosted. Ensure to replace it with the correct IPv4 and IPv6 addresses of your API.

```python
import pulumi
import pulumi_aws as aws

# Replace these with your domain name and AI API endpoint IP addresses
domain_name = "mydomain.com"  # Your registered domain.
subdomain = "api"  # The subdomain for your AI API.
api_ipv4_address = "123.123.123.123"  # The IPv4 address where your AI API is hosted.
api_ipv6_address = "2600:1f18:4346:c007:5bd4:602:ff3a:4eb6"  # The IPv6 address where your AI API is hosted.

# Create a Hosted Zone if it doesn't already exist
hosted_zone = aws.route53.get_zone(name=domain_name)

# Create an A Record to map the subdomain to an IPv4 address
a_record = aws.route53.Record(f"{subdomain}-record",
    zone_id=hosted_zone.zone_id,
    name=f"{subdomain}.{domain_name}",
    type="A",
    ttl=300,
    records=[api_ipv4_address],
)

# Create an AAAA Record to map the subdomain to an IPv6 address
aaaa_record = aws.route53.Record(f"{subdomain}-record-ipv6",
    zone_id=hosted_zone.zone_id,
    name=f"{subdomain}.{domain_name}",
    type="AAAA",
    ttl=300,
    records=[api_ipv6_address],
)

# Expose the DNS settings
pulumi.export("a_record_name", a_record.name)
pulumi.export("aaaa_record_name", aaaa_record.name)
pulumi.export("hosted_zone_id", hosted_zone.zone_id)
```

This program defines AWS cloud resources using Pulumi's Python SDK. At the execution of this program, it will communicate with AWS to provision these resources in your account, given that your AWS credentials are configured to be used by Pulumi.

When run, the `pulumi.export` lines will output the DNS settings created. Once the DNS records propagate (which could take some time depending on various factors), the domain name you set up will start resolving to the IP address of your AI API endpoint, and you'll be able to access the API via the new subdomain.