Insert Variable Values when loading a Cloud Config?

[leeand00]

I asked a question on another site
(http://stackoverflow.com/questions/37032806/does-bare-metal-coreos-etcd2-support-the-templating-feature-of-coreos-cloudinit)
about loading a cloud config from nginx onto a bare-metal core-os machine. 


The question involves trying to have nginx fill in the variables for the
$private_ipv4 and $public_ipv4 when a config is loaded up.  Does this
require that I use php-fpm to somehow recognize the machine sending the
request, and then fill in the variables when the cloud-config is requested?

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,268241,268241#msg-268241