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Terraform Not Recognizing Resource Changes After Provider Upgrade

๐Ÿ‘€ Views: 3 ๐Ÿ’ฌ Answers: 1 ๐Ÿ“… Created: 2025-06-08
terraform aws provider-upgrade HCL

I've searched everywhere and can't find a clear answer. After trying multiple solutions online, I still can't figure this out. I'm working with a frustrating scenario after upgrading the Terraform AWS provider from version 3.54.0 to 4.0.0. I expected Terraform to recognize changes I've made in my configuration files, but it seems exploring on the old state. When I run `terraform plan`, I'm seeing messages like `No changes. Infrastructure is up-to-date.` despite obvious differences in my `main.tf` file. Here's a snippet of what I've changed: ```hcl resource "aws_instance" "example" { ami = "ami-12345678" instance_type = "t2.micro" tags = { Name = "NewInstance" } } ``` I modified the `ami` and `tags`, yet it doesn't reflect in the plan output. I tried running `terraform refresh` to synchronize the state with the actual infrastructure, but that didnโ€™t help either. I also checked for any cached state files or lock files but found nothing unusual. My backend configuration is using S3, and I verified that the state file in S3 has the correct resource attributes. Running `terraform apply` doesnโ€™t yield any errors, and it just confirms that everything is up-to-date again. I've also ensured that my CLI is up to date, and I cleared the `.terraform` directory before reinitializing with `terraform init`. Is there a specific setting or change in the provider that could be affecting this behavior? Any insights on how to troubleshoot this would be greatly appreciated! What am I doing wrong?