Dynamic IP Access Management for MongoDB Atlas

Question

Pulumi · Accepted Answer

## Dynamic IP Access Management for MongoDB Atlas with Pulumi

Dynamic IP Access Management for MongoDB Atlas involves managing the IP access list entries dynamically for your MongoDB Atlas project to ensure that only trusted IP addresses can access your database resources. In this context, dynamic means that the IP addresses can be automatically added, updated, or removed as needed, rather than requiring manual intervention.

To achieve this with Pulumi, we will leverage the `pulumi_mongodbatlas` Python package. This package provides resources for interacting with MongoDB Atlas, including the ability to create and manage IP access list entries.

### Prerequisites

Before you start, you should have the following prerequisites in place:

- A Pulumi account and the Pulumi CLI installed on your computer.
- An active MongoDB Atlas account.
- An API Key from MongoDB Atlas with the appropriate permissions to create IP access list entries.
- Python installed on your computer.
- Pulumi new project initialized with MongoDB Atlas and appropriate cloud provider.

### Program Explanation

The program below uses the `mongodbatlas.ProjectIpAccessList` resource to create a new IP access list entry in your MongoDB Atlas project. This resource will be used to add an IP address or CIDR block to the access list for your project. The `ip_address` field is where you specify the IP address. You also need to specify the `project_id` which is the unique identifier for your MongoDB Atlas project.

Let's look at the Pulumi program to manage Dynamic IP Access Management for MongoDB Atlas:

```python
import pulumi
import pulumi_mongodbatlas as mongodbatlas

# MongoDB Atlas Project ID - replace this with your own project ID.
project_id = "5e2210bef2a30b12c3a7ge60"

# Define an IP Access List entry for the MongoDB Atlas project.
# This entry allows access from a specific IP address or CIDR block.
project_ip_access_list = mongodbatlas.ProjectIpAccessList("ip-access-entry",
    project_id=project_id,
    cidr_block="192.168.1.1/32",  # Replace with the desired CIDR block
    comment="IP Access List entry managed by Pulumi"
)

# Export the created IP Access List entry ID.
pulumi.export("ip_access_list_id", project_ip_access_list.id)
```

In this program:
- A new IP address is added to the access list using the CIDR notation (you should replace `192.168.1.1/32` with the desired IP or CIDR block).
- We add a comment to the entry for easier identification, which is particularly useful when managing multiple entries.
- Lastly, we are exporting the access list entry's `id`, which can be useful for downstream automation or auditing purposes.

### Next Steps

After running this Pulumi program, your specified IP address will be added to the IP Access List for the MongoDB Atlas Project, enabling secure connections to your MongoDB Atlas instances. For dynamic management, you can expand upon this basic setup by integrating IP address discovery mechanisms, or by creating a more elaborate system that interacts with event triggers to add and remove IP addresses dynamically.

Remember to handle the API keys and other secrets securely. Pulumi supports secret management to encrypt sensitive data.

### Running the Program

To run the program:
1. Save the above code in a file named `__main__.py`.
2. Run `pulumi up` in your terminal and select `yes` to perform the update.

Pulumi will execute the planned actions and, if successful, will add the IP address to your MongoDB Atlas project's IP Access List.