/tags/terraform/ Recent content in terraform on Aos Dabbagh Hugo -- gohugo.io en-us Sat, 25 Feb 2023 16:19:04 -0500 /2023/02/25/better-utilization-of-terraform-resource-keys/ Sat, 25 Feb 2023 16:19:04 -0500 /2023/02/25/better-utilization-of-terraform-resource-keys/ When managing multiple dissimilar resources in Terraform, best practices dictate that you use the for_each meta-argument. Furthermore, when needing to convert a list to a set or map for chaining, the advice given is usually of the form: for_each = { for k, v in aws_subnet.all : k => v } This will work but unfortunately it becomes unwieldy the more you need to rely on these generated resources. A motivating example In one of Adrian Cantrill’s excellent courses on AWS, we are tasked with setting up a multi-tier subnet design: