Feature Req: Support AZ ID and name on subnet creation

[Ry-K]

We are currently using this module for VPC creation. In order to support alignment across a given set of accounts for an upcoming project, we would like to have the ability to set the Availability Zone ID rather than the name when creating a subnet.

https://www.terraform.io/docs/providers/aws/r/subnet.html#argument-reference

Currently the module only supports name (availability_zone argument) when creating a subnet.

Regards,
Ryan

[syquus]

I just landed here looking for how to configure AZ ID on this module. Sad to see it isn't available. It's a must for cross-account compatibility...

[DrFaust92]

I'm going to take a crack at this, ill update.
from a glance it seems this will be a breaking change if there is a move from az to az id. it should work fine for new VPCs.

[bryantbiggs]

Duplicate of #350

[antonbabenko]

I have just released v2.25.0 (after #370 has been merged) and you can now specify AZ IDs or AZ names in azs argument, like this (pick one):

module "vpc" {
  source = "terraform-aws-modules/vpc/aws"

  # Option 1 - Using AZ names
  azs = ["eu-west-1a", "eu-west-1b"]

  # Option 2 - Using AZ ids
  azs = ["euw1-az1", "euw1-az2"]

  # Option 3 - Using mixed values (names and ids)
  azs = ["eu-west-1a", "euw1-az2"]
}

Closing this issue.

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