1. How to deploy an EC2 prefix list in AWS?


    Sure, you can create and manage an EC2 prefix list using Pulumi. It is useful when you want to share a set of CIDR blocks that you want to manage as a group.

    A prefix list is a named set of CIDR blocks. The prefix list ID can be used in a security group or a route table similar to a security group or network ACL ID. The AWS managed prefix lists include the following:

    • Amazon S3
    • AWS CloudFront
    • AWS CodeBuild
    • Amazon DynamoDB
    • Amazon Connect

    However, you can also create your own prefix list if you need to manage a list of IP address ranges.

    Here is a basic example of how you can use Pulumi to manage an EC2 prefix list:

    import * as pulumi from "@pulumi/pulumi"; import * as aws from "@pulumi/aws"; const example = new aws.ec2.ManagedPrefixList("example", { addressFamily: "IPv6", entries: [{ cidr: "2001:db8::/32", }], maxEntries: 5, });

    In this TypeScript Pulumi program, we utilize the "aws.ec2.ManagedPrefixList" resource (Documentation Link) from the AWS Pulumi package.

    This program defines one resource, an EC2 Managed Prefix List:

    • addressFamily: "IPv6": Refers to which version of the IP schema to use. This can be either IPv4 or IPv6.
    • entries: [{ cidr: "2001:db8::/32" }]: Sets the list of CIDR blocks associated with this prefix list. Here we just have one CIDR block as an example.
    • maxEntries: 5: The maximum number of entries that the prefix list can contain. Here we limit this to 5 entries.

    Once deployed, this prefix list will be available to be used in AWS's security groups or route tables.