Missing required field Principal

Question

Bellow is what I have to to create an IAM role using terraform. Whenever I init it says that I am missing a field principal? Where/What am I missing?

resource "aws_iam_role" "role_identifier" { 
  name = var.role_name 
  assume_role_policy = jsonencode({
    Version = "2012-10-17", #policy language version
    Statement = [
      {
        Action = "sts:AssumeRole", #Allows role to be assumed
        Effect = "Allow"
        Sid = ""
        Principal = {
          Service = "ec2.amazonaws.com"
        }
      },
      {
        Action = "AssumeRole",
        Effect = "Allow"
      }
    ]
  })
}

Accepted Answer

This should do it

```
resource "aws_iam_role" "role_identifier" {
  name = var.role_name

assume_role_policy = jsonencode({
    Version = "2012-10-17"
    Statement = [
      {
        Action = "sts:AssumeRole"
        Effect = "Allow"
        Sid    = ""
        Principal = {
          Service = "ec2.amazonaws.com"
        }
      },
    ]
  })
}
```

Answer

Hi,

Your policy contains two statements. The first part has Principal but the second part only has the following:

{ Action = "AssumeRole", Effect = "Allow" }

This second part needs to be cleaned up as it looks like it is not required.

Missing required field Principal

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