cloudposse/terraform-aws-dynamic-subnets 2.0.0

v2.0.0 IPv6 and alternate use cases

on GitHub

Version v2.0.0 has breaking changes, documented here.

The highlights:

• Full support for IPv6
• Addresses nearly all open issues and PRs against version 1
• More inputs made optional, allowing you, among other things, to create subnets without direct access to the public internet
• Additional control over whether or not certain resources are created, allowing you to substitute your own resources (e.g. a combination bastion host and NAT instance instead of the NAT instance this module creates)
• Additional outputs allowing you to connect and configure outside resources to work with this module's resources
• Ability to use a single NAT Gateway to cover all the private subnets (for cost savings in non-critical environments)
• Optional inputs converted to lists due to Terraform limitations.
• subnet_type_tag_key deprecated.

Known issues:

• Public subnets are not properly configured when private_subnets_enabled is false
• Some outputs have changed from tuple to list, causing plans to contain confusing output like:

Changes to Outputs:
  ~ private_subnet_cidrs = [
      - "172.16.0.0/19",
      - "172.16.32.0/19",
    ] -> [
      + "172.16.0.0/19",
      + "172.16.32.0/19",
    ]

See hashicorp/terraform#31102 for details.

Details:

Changes from v1.0.0: 1.0.0...2.0.0