Read the docs redirects

https://docs.ansible.com/ansible/ - points to the ec2 instance

https://docs.ansible.com/ansible-core/ - points to https://ansible.readthedocs.io/projects/ansible-core/

Configuring a test setup

DNS docs.ansible.com -> 3 IPs (LB) -> EC2 instance(s) -> Nginx/Apache (docs.ansible.com) -> /var/www/docs/

DNS docs.ansible.com -> 3 IPs (LB) -> EC2 instance(s) -> Nginx/Apache (docs.ansible.com) /ansible/ -> /var/www/docs/
/ansible-core/ -> redirect ansible.readthedocs.org/ansible-core/
/(.*)/ -> redirect

DNS testdocs.ansible.com -> 3 IPs (LB) -> EC2 instance(s) -> Nginx/Apache (testdocs.ansible.com)

docs.ansible.com/stage-docs -> ansible.readthedocs.org/ansible-core/

1/ Ask new DNS entry for testdocs.ansible.com
2/ ssh ec2 instance duplicate current httpd vhost docs.ansible.com cp -av docs.ansible.com testdocs.ansible.com
3/ update .htaccess file (testdocs.ansible.com) for new redirect rules

4/ remove testdocs.ansible.com vhost
5/ update .htaccess file (docs.ansible.com) for ansible-core