IP Whitelisting for Safe MongoDB Atlas Connections

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Pulumi · Accepted Answer

IP whitelisting is a security measure that ensures only trusted IP addresses can connect to your MongoDB Atlas clusters. By setting up an IP whitelist, you restrict access to your database from unauthorized networks, which is essential for protecting sensitive data.

Pulumi enables you to manage your cloud resources with code, and for MongoDB Atlas, you can use the `mongodbatlas` package to create an IP whitelist. Here, we will create a Pulumi program that sets up an IP whitelist for a MongoDB Atlas project.

In this example, we’re going to use the `mongodbatlas.ProjectIpAccessList` resource. This resource allows us to define the list of IP addresses or CIDR blocks that are allowed to access the MongoDB clusters within a specific project.

Here's how you can do this in Python with Pulumi:

1. We start by importing the necessary Pulumi libraries and the MongoDB Atlas package.
2. We define a `ProjectIpAccessList`, specifying the `ipAddress` we wish to whitelist, the `projectId`, and an optional `comment` to describe the whitelist entry.
3. We export the IP access list ID so you can reference it outside of Pulumi, for example, in a CI/CD pipeline or application configuration.

Firstly, ensure you have the necessary Pulumi and MongoDB Atlas setup on your local machine:

- Install Pulumi: https://www.pulumi.com/docs/get-started/install/
- Configure Pulumi for MongoDB Atlas: https://www.pulumi.com/registry/packages/mongodbatlas/setup/

```python
import pulumi
import pulumi_mongodbatlas as mongodbatlas

# Replace these variables with your own information
project_id = "myAtlasProjectId" # MongoDB Atlas Project ID
my_ip = "192.0.2.1" # IP address to be whitelisted

# Create an IP Access List for a MongoDB Atlas project
ip_access_list = mongodbatlas.ProjectIpAccessList("ip-access-list",
    project_id=project_id,
    ip_address=my_ip, # Single IP address to whitelist
    comment="Whitelisted IP for secure access"
)

# Exporting the ID of the IP Access List
pulumi.export("ip_access_list_id", ip_access_list.id)
```

To run this program:
1. Save the code to a file called `__main__.py`.
2. Execute `pulumi up` in the directory where the file is saved to provision the resources.

The output will display the ID of the IP Access List you've created. Save this ID for future reference in your MongoDB Atlas management tasks.

Remember that this is a basic example. In a production environment, you would handle sensitive information such as project IDs and IPs more securely, possibly using Pulumi's secrets management: https://www.pulumi.com/docs/intro/concepts/secrets/

By using Pulumi, you can easily manage the IP whitelisting for MongoDB Atlas as part of your infrastructure as code, which is excellent for maintaining consistency, auditing, and automation across your environments.