Rancher EFS stack issue

I’ve set up a new cluster with rancher-server:v1.2.0, each node running RancherOS 0.7.1 in AWS (each in the same region but separate AZs for fault tolerance). I have EFS set up, so after being at re:Invent and hearing that Convoy was being deprecated in place of native Rancher catalog entries, I wanted to check it out. Unlike Convoy, it doesn’t seem to ask for anything besides the AWS credentials. It starts a container successfully on one node, but the other two keep getting stopped, it restarts them, and they stop again. Logs show this:

12/2/2016 8:12:13 PMtime=“2016-12-03T04:12:13Z” level=info msg=Running
12/2/2016 8:12:13 PMtime=“2016-12-03T04:12:13Z” level=info msg=Starting
12/2/2016 8:12:14 PMtime=“2016-12-03T04:12:14Z” level=fatal msg="getting host ID: Failed to find current host b3856cbd-a848-40b1-922e-6d367d612138, got 0 host(s)"
12/2/2016 8:13:33 PMtime=“2016-12-03T04:13:33Z” level=info msg=Running
12/2/2016 8:13:33 PMtime=“2016-12-03T04:13:33Z” level=info msg=Starting
12/2/2016 8:13:34 PMtime=“2016-12-03T04:13:34Z” level=fatal msg="getting host ID: Failed to find current host b3856cbd-a848-40b1-922e-6d367d612138, got 0 host(s)"
12/2/2016 8:14:30 PMtime=“2016-12-03T04:14:30Z” level=info msg=Running
12/2/2016 8:14:30 PMtime=“2016-12-03T04:14:30Z” level=info msg=Starting
12/2/2016 8:14:30 PMtime=“2016-12-03T04:14:30Z” level=fatal msg="getting host ID: Failed to find current host b3856cbd-a848-40b1-922e-6d367d612138, got 0 host(s)"
12/2/2016 8:15:28 PMtime=“2016-12-03T04:15:28Z” level=info msg=Running
12/2/2016 8:15:28 PMtime=“2016-12-03T04:15:28Z” level=info msg=Starting
12/2/2016 8:15:29 PMtime=“2016-12-03T04:15:29Z” level=fatal msg="getting host ID: Failed to find current host b3856cbd-a848-40b1-922e-6d367d612138, got 0 host(s)"
12/2/2016 8:16:31 PMtime=“2016-12-03T04:16:31Z” level=info msg=Running
12/2/2016 8:16:31 PMtime=“2016-12-03T04:16:31Z” level=info msg=Starting
12/2/2016 8:16:32 PMtime=“2016-12-03T04:16:32Z” level=fatal msg="getting host ID: Failed to find current host b3856cbd-a848-40b1-922e-6d367d612138, got 0 host(s)"
12/2/2016 8:17:44 PMtime=“2016-12-03T04:17:44Z” level=info msg=Running
12/2/2016 8:17:44 PMtime=“2016-12-03T04:17:44Z” level=info msg=Starting
12/2/2016 8:17:44 PMtime=“2016-12-03T04:17:44Z” level=fatal msg="getting host ID: Failed to find current host b3856cbd-a848-40b1-922e-6d367d612138, got 0 host(s)"
12/2/2016 8:18:45 PMtime=“2016-12-03T04:18:45Z” level=info msg=Running
12/2/2016 8:18:45 PMtime=“2016-12-03T04:18:45Z” level=info msg=Starting
12/2/2016 8:18:45 PMtime=“2016-12-03T04:18:45Z” level=fatal msg=“getting host ID: Failed to find current host b3856cbd-a848-40b1-922e-6d367d612138, got 0 host(s)”

Any ideas what I’m doing wrong, or what the issue might be here?