How to configure AWS or Google Cloud instance to resolve “DX11 feature level 10.0 is required” error

Chances are you have the wrong sshKey set in your project. Assuming you have something like the following attached to either your provisioner or resource:

resource "google_compute_instance" "my-host" {
  // ...
  connection {
    type        = "ssh"
    agent       = false
    user        = "${var.gce_ssh_user}"
    port        = "${var.gce_ssh_port}"
    timeout     = "5m"
    private_key = "${file("${var.gce_ssh_private_key_file}")}"
  }
  // ...
}

You should be able to verify the project's sshKey:

$ gcloud compute project-info describe

My guess is the sshKey values set part of the project aren't well formed according to GCE. If you step through something like the following you may find the configuration snafu that's causing this problem:

$ gcloud compute project-info describe > project.yaml
$ cat project.yaml| egrep 'ssh-' | awk '{print $1 " " $2 " " $3}' > existing_project_keys.pub
$ awk -v USER="$USER" '{print USER ":" $1 " " $2 " " USER}' .ssh_id_rsa.pub > new_keys.pub
$ cat existing_project_keys.pub >> new_keys.pub
$ gcloud compute project-info add-metadata --metadata-from-file sshKeys=new_keys.pub

(or, it could be something simple like you have too many keys loaded into your agent, which is why I've disabled the agent in the connection above)

This link can be interesting for you ''Best Practices for DDoS Protection and Mitigation on Google Cloud Platform'' :

https://cloud.google.com/files/GCPDDoSprotection-04122016.pdf