Private Endpoints for Secure AI Data Exchanges using OCI DNS

Question

Pulumi · Accepted Answer

To set up private endpoints for secure AI data exchanges using Oracle Cloud Infrastructure (OCI) DNS, you would typically need to create a private endpoint resource within a subnet and configure the DNS zones and records to resolve the internal private endpoints to their corresponding services.

Here is an outline of the steps we will take in the Pulumi program:

1. **Create a VCN and Subnet:** These are networking prerequisites to place your private endpoints.
2. **Create a Private Endpoint:** We use the `oci.DataFlow.PrivateEndpoint` Pulumi resource to create a private endpoint that represents a secure entry point for data flows in your network.
3. **Set up DNS Zones and Records:** Using the `oci.Dns.Zone` and associated DNS records, we will configure the DNS service to allow name resolution within the internal network for the private endpoint.

Here is a Pulumi program to set up the infrastructure:

```python
import pulumi
import pulumi_oci as oci

# Configurations
compartment_id = 'your-compartment-ocid'  # Replace with your OCI compartment OCID
vcn_cidr_block = '10.0.0.0/16'
subnet_cidr_block = '10.0.1.0/24'
dns_zone_name = 'internal.example.com'

# Create a Virtual Cloud Network (VCN)
vcn = oci.core.Vcn("MyVcn",
                   compartment_id=compartment_id,
                   cidr_block=vcn_cidr_block,
                   dns_label="myvcn",
                   display_name="My VCN")

# Create a Subnet
subnet = oci.core.Subnet("MySubnet",
                         compartment_id=compartment_id,
                         vcn_id=vcn.id,
                         cidr_block=subnet_cidr_block,
                         dns_label="mysubnet",
                         display_name="My Subnet")

# Create a Private Endpoint
private_endpoint = oci.dataflow.PrivateEndpoint("MyPrivateEndpoint",
                                                compartment_id=compartment_id,
                                                subnet_id=subnet.id,
                                                dns_zones=[dns_zone_name],
                                                display_name="My Private Endpoint")

# Create a DNS Zone
dns_zone = oci.dns.Zone("MyDnsZone",
                        name=dns_zone_name,
                        compartment_id=compartment_id,
                        zone_type="PRIMARY")

# Output the DNS Zone Name and Private Endpoint ID
pulumi.export('dns_zone_name', dns_zone.name)
pulumi.export('private_endpoint_id', private_endpoint.id)
```

In the program above:

- We create a VCN and a subnet under it. Make sure the `cidr_block` values do not overlap with your existing network ranges.
- We set up the private endpoint using `oci.dataflow.PrivateEndpoint`. Replace `'your-compartment-ocid'` with the appropriate OCI compartment OCID where the resources will reside.
- We configure the DNS zone for our internal network using `oci.dns.Zone`.

By setting up private endpoints, traffic between your VCN and Oracle services stays within the Oracle Cloud Infrastructure network, thereby using your internal DNS resolution for service names with better security and lower latency.

Make sure to replace placeholder variables like `'your-compartment-ocid'` with actual values from your OCI setup. You would need to have appropriate permissions to create and manage these resources in the specified compartment.

To run this program, save the code to a file named `__main__.py`, ensure you have the [Pulumi CLI](https://www.pulumi.com/docs/get-started/) and [OCI CLI](https://docs.oracle.com/en-us/iaas/Content/API/SDKDocs/cliinstall.htm) installed, and have set up the required credentials. Once that's done, you can execute:

```sh
pulumi up
```

This command will provision the resources as specified in the code above. If it's the first time you're running it in a new directory, you'll be prompted to create a new Pulumi project and stack.