Can we set multiple FQDN to a single vm

Question

Like we can have multiple IP addresses for a single interface (IP Aliasing), the same way, can we set multiple FQDN for a single VM?
So that in the DHCP lease we can get multiple FQDN for those IP addresses.

I tried setting CNAME in DNS, but it could not help me to get DHCP lease with the new FQDN.

Any assistance you can provide would be greatly appreciated.

Regards,
Hrishikesh Tak

Answer 1

@Hrishikesh Tak Hi,

Thank you for posting in Q&A!

Based on my experience and discussion with my colleagues, following are my reply:

>>have multiple IP addresses for a single interface

Yes, this can be achieved by manually adding a CNAME DNS record for the host. In my environment, I add a CNAME record"test.lab.com" point to the host"nps.lab.com".
When I "nslookup test.lab.com", I get the result of "nps.lab.com"and the host IP address.

>>get multiple FQDN for those IP addresses

Unfortunately, this seems cannot be achieved. The DHCP lease of one IP address cannot be sent to multiple FQDN. The DHCP server will only give one single DHCP lease to one client at a time. If there exists multiple DHCP lease(the same IP) with different FQDM, it's impossible.

Merry Christmas, Hope you have a nice day : )
Gloria

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Answer 2

Hi,

Like we can have multiple IP addresses for a single interface (IP Aliasing), the same way, can we set multiple FQDN for a single VM?

For a single interface, you can register only one DNS suffix.
If you want create many FQDN for this machine , you have to create all DNS record manually .

please don't forget to mark this reply as answer if it help you to fix your issue