Como adicionar o par de teclas ao EC2 Instância Terraform

#add the key_name which are stored into your AWS account --> EC2--> Network & Security-->Key Pairs
resource "aws_instance" "ec2" {
  ami = "ami-0c1a7f89451184c8b"
  instance_type = "t2.micro"
  key_name = "terraform"
  }
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