output "public_ip" {
    value = [ 
        "${aws_instance.perforce_01.public_ip}",
        "${aws_instance.perforce_02.public_ip}"
    ]
}

output "private_dns" {
    value = [ 
        "${aws_instance.perforce_01.private_dns}",
        "${aws_instance.perforce_02.private_dns}" 
    ]
}