How do I disable a region in a multi-region module?

[yorinasub17]

I'd like to exclude regions I never use from having resources that Landing Zone and the Reference Architecture deploys. How can I do that?

[yorinasub17]

In the Landing Zone modules (account-baseline-app, account-baseline-root, account-baseline-security), there are two settings that configure multiple regions:

• The provider blocks for each region
• The opt_in_regions variables

In the Reference Architecture, these are configured through the all_aws_regions and opt_in_regions local variables in the multi_region_common.hcl configuration file.

To disable a region in the multi-region modules, you can remove it from the opt_in_regions list. Note that you must have all regions specified in the all_aws_regions list, as the multi-region module expects a provider block for every possible AWS region.

If you are using terraform or the Landing Zone module directly, you can omit the region from the opt_in_regions variables list that you are passing into the module.