terraform-aws-dynamic-subnets

This is candidate code for the v2.0.0 release. It has breaking changes, documented here. If you want to use try it out, please do, and add comments to PR #159 if you find problems.

The highlights:

• Full support for IPv6
• Addresses nearly all open issues and PRs
• More inputs made optional.
• Additional control over whether or not certain resources are created.
• Optional inputs converted to lists due to Terraform limitations.
• subnet_type_tag_key deprecated.

Changes from v2.0.0-rc4: https://github.com/cloudposse/terraform-aws-dynamic-subnets/compare/2.0.0-rc4...2.0.0-rc5

This is candidate code for the v2.0.0 release. It has breaking changes, documented here. If you want to use try it out, please do, and add comments to PR #159 if you find problems.

The highlights:

• Full support for IPv6
• Addresses nearly all open issues and PRs
• More inputs made optional.
• Additional control over whether or not certain resources are created.
• Optional inputs converted to lists due to Terraform limitations.
• subnet_type_tag_key deprecated.

This is candidate code for the v2.0.0 release. It has breaking changes, documented here. If you want to use try it out, please do, and add comments to PR #159 if you find problems.

The highlights:

• Full support for IPv6
• More inputs made optional.
• Additional control over whether or not certain resources are created.
• Optional inputs converted to lists due to Terraform limitations.
• subnet_type_tag_key deprecated.

This is candidate code for the v2.0.0 release. It has breaking changes, and is missing the migration documentation on how to upgrade from v1.0. Nevertheless, if you want to use try it out, please do, and add comments to PR #159 if you find problems.

The highlights:

• Full support for IPv6
• More inputs made optional.
• Additional control over whether or not certain resources are created.
• Optional inputs converted to lists due to Terraform limitations.
• subnet_type_tag_key deprecated.

what

• Increase terraform min version to 0.12.26 due to new required_providers format
• Relax provider version requirements by using >= instead of ~>

why

• Provide greater compatibility with newer versions of providers

references

• https://github.com/cloudposse/terraform-aws-dynamic-subnets/pull/104#issuecomment-735945102

what

• Fixing resource creation when enabled flag is = false

why

• Some resources were still created even when the enabled flag was false

closes https://github.com/cloudposse/terraform-aws-dynamic-subnets/issues/42

what

Allow use of existing AWS Elastic IPs by IP address (resolves to allocation id via data source).

why

Sometimes its important to keep IP addresses for example to allow business customers granting these IPs in firewalls, a third party tool is configured to only allow certain IPs or there is already an existing IP pool to use. See also referenced issue.

/cc @osterman maybe? :)

what

• Added NAT Gateway EIP to outputs

why

• So they can be read via remote state

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

what

• gateway and instance now use same EIP module

why

• to avoid reassigning IPs in case of switch between gateway and instance types

what

• Fix public ip address

why

• EIP force that flag true

what

• Added EIP for NAT instances

why

• Have stable IP addresses

what

• Added EIP for NAT instances

why

• Have stable IP addresses

what

• Remove quotes from references

why

• Terraform 0.12.14+ started warning about deprecated usage of quotes on references