Upgrading to Terraform 0.12

Originally published at: https://sweetops.com/sub/upgrading-to-terraform-0-12/

Terraform v0.12 is a major release that is focused on configuration language improvements. This guide discusses the most common upgrade concerns and issues.

For most users, upgrading configuration should be completely automatic. Some simple configurations will require no changes, while others can be prepared by running the automatic upgrade tool.