Yep, we use the integrated vault backend. In our case, we use lets encrypt to get certificates for vault and then bootstrap a vault cluster with internal stora

Yep, we use the integrated vault backend. In our case, we use lets encrypt to get certificates for vault and then bootstrap a vault cluster with internal storage. Then you have vault and you can use terraform to configure a consul TLS backend. And then there is a little hitch, because consul-template cannot easily create multiple files from a single vault API call, so you cannot use consul-template directly to create the necessary certificate files. We've written a small messy tool there. But once you have that, it's fairly straight forward to generate consul + nomad TLS certs for the trust and then you're set.