[Enhancement]: NAT Gateway support for Secondary EIP allocation IDs

[adampie]

Description

NAT Gateways now support associating up to 8 IPs (1 primary IPv4 address and 7 secondary IPv4 addresses) to increase the concurrent connection limit to a single destination.

Affected Resource(s) and/or Data Source(s)

• aws_nat_gateway

Potential Terraform Configuration

resource "aws_nat_gateway" "example" {
  allocation_id            = aws_eip.example.id
  secondary_allocation_ids = []
  subnet_id                = aws_subnet.example.id

  tags = {
    Name = "gw NAT"
  }

  # To ensure proper ordering, it is recommended to add an explicit dependency
  # on the Internet Gateway for the VPC.
  depends_on = [aws_internet_gateway.example]
}

References

• https://aws.amazon.com/about-aws/whats-new/2023/02/amazon-nat-gateways-capacity-concurrent-connections-unique-destination/
• https://docs.aws.amazon.com/vpc/latest/userguide/vpc-nat-gateway.html#nat-gateway-edit-secondary

Would you like to implement a fix?

No

[github-actions]

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[ewbankkit]

One potential source of problems here will be how to manage both auto-assigned and manually assigned private IPv4 addresses.

[arko95]

Secondary IP added to the NAT GW are EIP so this is public IPv4 address and not private . can we create a new ressource "aws_nat_gateway_secondary_ip" that will allow adding those secondary IP ?

[jtomaszon]

Hello guys, where are we on this feature request? We are suffering right now because of not enough NAT power

[github-actions]

This functionality has been released in v5.10.0 of the Terraform AWS Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!

[github-actions]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.
If you have found a problem that seems similar to this, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.