Cutting to the chase, on the command line within wordpress root folder:
Should this always return a response?
I'm having a technical discussion with my sysadmin about this issue. Our Load balancers are running a http health check on / - a recent release I submitted failed because the load balancers are not seeing a response from the wordpress servers they manage.
Despite this, the website still functions as expected, however, the sysadmins - reasonably - don't want the release to go out if the http health check fails.