cloudposse/terraform-aws-dynamic-subnets 0.19.0

0.19.0 Add `private_subnets_additional_tags` and `public_subnets_additional_tags` variables. Change AWS region for tests.

on GitHub

what

• Add private_subnets_additional_tags and public_subnets_additional_tags variables
• Change AWS region for tests to us-east-2

why

• EKS requires tagging all subnets with kubernetes.io/cluster/<cluster-name>=shared tag, but at the same time it requires tagging subnets with additional tags that are different for public and private subnets:

  • Private Subnet Tagging Requirement for Internal Load Balancers:
    kubernetes.io/role/internal-elb=1

  • Public Subnet Tagging Option for External Load Balancers:
    kubernetes.io/role/elb

This is required because EKS can't detect the type of subnets automatically

• Change AWS region for tests to us-east-2 since we use it in all our tests and the us-west-1 region is very limited

references

• https://docs.aws.amazon.com/eks/latest/userguide/network_reqs.html