Hey, folks! That's much to all the Hashicorp folks and Vagrant 
contributors. I've been working more with Vagrant lately, and I'm 
repeatedly surprised at how well the API works. Appreciate it!

This may be in the documentation. If so, I couldn't find it, and mea culpa.

Let's say you're using multiple VMs. For example, say there are two 
(different) app servers and a DB server. We want these to be compatible 
with both VirtualBox and AWS provisioners, so we won't always have an IP 
address of 127.0.0.1 that works.

When you're writing a top-level config.vm.provision or config.push block in 
your Vagrantfile, is there any way to tell which VM it's being invoked for? 
For instance, it would be nice to be able to write a top-level Chef 
provisioner that loaded the config out of a JSON file, but used a different 
JSON file for each app server.

But then it would need to know which VM it was being called for, to load 
the right JSON file. Should it just be multiple provisioner blocks, one 
inside each config.vm block?

Similarly for the pusher -- say you had a top-level config.push block that 
knew how to parse "vagrant ssh-info" and call Capistrano -- it would still 
need to know which app server it was being called for so that it could call 
ssh-info for the correct app server.

Any hints? Or is the right answer to just put the Provisioner and Pusher 
blocks inside the config.vm blocks and maybe wind up with a bit of 
duplicate code?

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