ansible/files/httpd/headers.conf.j2

Header set AppTime "%D"
PassEnv HOSTNAME
{% if 'proxy' in inventory_hostname %}
Header set ProxyServer "{{ inventory_hostname }}"
{% else %}
Header set AppServer "{{ inventory_hostname }}"
{% endif %}
{% if inventory_hostname in groups['proxies'] and ansible_distribution == 'Fedora' %}

ErrorDocument 421 "You have hit an incorrect proxy for a Fedora Project website due to a bug in Firefox. Please refresh"
{% endif %}