11-04-2015
Think of nameservers as something different (but not necessarily) from your domain.
It's the DNS that holds the zone data for your somedomain.com. To make that official as far as the Internet goes that's why they are asking where your records go... that is what nameservers house the records.
Anymore unless the company is sizable, I chose to use a world wide redundant DNS service (multiple DNS servers with redundance) to house records for a domain (e.g. DNSMadeEasy for example). But as I alluded to earlier you can certainly host your own DNS server(s) (they like for you to have more than one if possible).
When DNS queries are made, ulimately thigns work from the root server down to the tld's etc... and along those paths, your case .com knows who (what DNS servers) stands authoritative for somedomain.com.
With that said, you or anyone else can choose to point to a DNS that "says" it stands authoritative for records for whoever (somedomain.com, mil.gov, etc)... if if that is your DNS that your pointing to you'll get back whatever name to IP (etc) that you have defined there.
Hope that wasn't too confusing.
Maybe another example. The Whitepages is a phone book. I could print my own phone book and change anyone's phone number I want. But this doesn't work at large because chances are people are using the official whitepages and not my hacked up copy.
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ipa-dns-install
ipa-dns-install(1) IPA Manual Pages ipa-dns-install(1)
NAME
ipa-dns-install - Add DNS as a service to an IPA server
SYNOPSIS
ipa-dns-install [OPTION]...
DESCRIPTION
Adds DNS as an IPA-managed service. This requires that the IPA server is already installed and configured.
OPTIONS
-p DM_PASSWORD, --ds-password=DM_PASSWORD
The password to be used by the Directory Server for the Directory Manager user
-d, --debug
Enable debug logging when more verbose output is needed
--ip-address=IP_ADDRESS
The IP address of the IPA server. If not provided then this is determined based on the hostname of the server.
--forwarder=FORWARDER
A forwarder is a DNS server where queries for a specific non-resolvable address can be directed. To define multiple forwarders use
multiple instances of --forwarder
--no-forwarders
Do not add any DNS forwarders, send non-resolvable addresses to the DNS root servers.
--reverse-zone=REVERSE_ZONE
The reverse DNS zone to use
--no-reverse
Do not create new reverse DNS zone. If used on a replica and a reverse DNS zone already exists for the subnet, it will be used.
--zonemgr
The e-mail address of the DNS zone manager. Defaults to hostmaster@DOMAIN
-U, --unattended
An unattended installation that will never prompt for user input
EXIT STATUS
0 if the installation was successful
1 if an error occurred
IPA
Jun 28, 2012 ipa-dns-install(1)