name resolution

Trying to get OMVextras installed within a vm on either of my two machines and i get the same error. both are able to ping 1.1.1.1 or other similar dns IPs but nothing with a hostname. thinking it was just the machine i was working on i tested machine two to find the same error. which makes me...

I have been trying to recover my dell r620 for a few weeks now with no luck. no etc hosts file and no etc hostname file. i can upgrade or update since no dns and cant figure out how to fix. i can remote in via idrac but cant resolve a lot of issues.