What could possibly happen if I lost /etc/resolve.conf file from the system in 7mode ?
And what if I disable DNS on cDOT cluster ?
Am using NIS and all the external servers; for example NTP are configured with their IPs (not by hostname).
Nothing, you just cant resolve hostnames.
Have plenty of 7 & cDOT machines without dns, works fine.
If you want to setup cifs, then you need to configure /etc/resolve.conf file.