Ansible populating a variable based on hostname

Following up on the indefatigable @michaelhampton’s suggestion, here is how you use host_vars

project root
-- host_vars
   -- host1.yml
   -- host2.yml
   -- host3.yml
-- my_playbook.yml

So when you set up host1.yml, you can just put the value it needs there:

---
Certmap: www.mydomain.com

And when you need to access it, you just refer to it like:

{{ Certmap }}

It will change for different hosts so long as each host has a host_vars file with Certmap defined.

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