Terraform: advanced patterns with Local Values and Dynamic Providers for Multiple AWS Regions
I'm currently working with a scenario with Terraform while trying to dynamically provision resources across multiple AWS regions using local values. I have defined a local variable that is supposed to hold a list of regions, and I want to create EC2 instances in each of those regions using a dynamic provider configuration. However, I'm running into a situation where Terraform is not recognizing the local variable as I expected, resulting in the following behavior: ``` behavior: Provider configuration not present This resource requires a provider configuration that specifies the provider to use, but no configuration was found. ``` I've tried setting multiple provider blocks and using the `provider` argument within my resource definition, but the instances still unexpected result to provision. Here's a simplified version of what I'm working with: ```hcl locals { aws_regions = ["us-west-1", "us-east-1"] } provider "aws" { region = local.aws_regions[0] } resource "aws_instance" "my_instance" { count = length(local.aws_regions) ami = "ami-0c55b159cbfafe1f0" instance_type = "t2.micro" provider = aws } ``` I also attempted to iterate through the regions using a `for_each` loop in the resource definition: ```hcl resource "aws_instance" "my_instance" { for_each = toset(local.aws_regions) ami = "ami-0c55b159cbfafe1f0" instance_type = "t2.micro" provider = aws } ``` Still, it seems that the provider configuration isn't being recognized. I’ve checked my Terraform version (0.13) and everything appears to be set up correctly according to the documentation. Can anyone guide to understand what I might be missing here, or if there's a better way to dynamically set the provider for multiple regions? Any insights would be greatly appreciated!