Ceph » Orchestrator

Currently, there's a ton of spots in the cephadm code where we do something like

if 'host1' not in [h.hostname for h in cephadm_module.cache.get_unreachable_hosts()]

Given the amount of times we have to do that same list compression to get all the hostnames for unreachable hosts just to check if a particular host is unreachable, it would be preferable to add a new function that takes a hostname and just returns a bool telling you if it is unreachable or not.