Strange DNS issue...Need Help!!

awshirley · 12-18-2014, 10:04 AM

I've got a server with Centos 7 that I use for Plex and some Windows VM's with VirtualBox. I have a Windows 2012R2 server that I use for DHCP and DNS services. The Centos box get an IP from Windows, but the Centos box hostname isn't being picked up by the Windows DNS service. I've tried disabling SELinux, the firewall and nothing seems to work. I can ping it using the IP from other computers on my network, but can't ping using the hostname for it.

Any suggestions?? I'm out of ideas here...

Ser Olmy · 12-18-2014, 08:13 PM

I don't know why you thought SELinux had anything to do with this, but anyway:

CentOS isn't going to register itself in the Windows DNS zone because:

only Active Directory domain members can register names in a DNS zone hosted on a Windows DNS server (unless you enable insecure DNS updates, which is not recommended), and
CentOS is not Windows and won't attempt to register a DNS record anyway

You can configure the Windows DHCP service to register DNS A (and optionally PTR) records on behalf of DHCP clients. The option(s) to do this can be found on the "DNS" tab in the Properties window for the DHCP scope in question.