Terraform AmazonSSMManagedInstanceCore

roleAmazonSSMManagedInstanceCore.tf

resource "aws_iam_instance_profile" "ssm_role" {
  name = "ssm_role"
  role = aws_iam_role.ssm_role.name
}

resource "aws_iam_role" "ssm_role" {
  name = "ssm-role"

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

resource "aws_iam_policy_attachment" "ssm_role" {
  for_each = toset([
    "arn:aws:iam::aws:policy/AmazonSSMManagedInstanceCore",
    "arn:aws:iam::aws:policy/service-role/AmazonEC2RoleforSSM"
  ])

  name = each.key
  roles       = [ aws_iam_role.ssm_role.name ]
  policy_arn = each.key
}