Multiple AWS Providers results in: err="rpc error: code = Unavailable desc = transport is closing"

[Doug-North]

In my workspace I am defining multiple AWS providers for different accounts.

provider "aws" {
  region = "eu-west-2"
  alias  = "example1"
  assume_role {
    role_arn = "arn:aws:iam::ACCOUNT-ID:role/ROLE-NAME"
  }
}

Everything works fine until i get to around 5 providers, when I receive the error:

Error: rpc error: code = Canceled desc = context canceled

Attached is an exert of the debug output, confirming it is indeed the AWS Provider that is failing
debug-output.log

I have removed a few providers, and dependent resources from the state as a 'workaround'

[soleares]

It looks like you're getting this with 3.42.0. I'm getting this error a lot. I've tried with versions 3.40.0 and 3.43.0. I'm also using assume_role in my aws provider.

[justinretzolk]

Hey @Doug-North 👋 Thank you for taking the time to raise this! In the past (when I used to support Terraform Cloud and Terraform Enterprise), when I've seen this type of error message, it usually was caused by the machine that Terraform was running on running out of memory. Given that this happened when you added additional instances of the AWS provider, and went away when you removed those, it seems as though that may be the case here. I realize it's been a while, but are you able to monitor the machine to see if that is indeed the case?