It has come to our attention that an Ubuntu 14.04 AMI in us-west-1 has become inaccessible. If you are using this AMI you should move your Nomad clients to ami-0c7b2a20526d0c5ff. For information on supplying AMIs for your installation, see the VM Service guide.
If you are still running Ubuntu 14.04 please contact us to migrate to Ubuntu 16.04.