10-21-2013
Newbie BIND DNS question: resolving upstream hosts?
Old skool UNIX and Linux geek here, but newbie to the world of DNS and bind. I've recently been tasked with replacing our DNS infrastructure, currently on Windows, with a RHEL based solution. And I assume that means using bind, which I've not used before. Here's my question:
Suppose our company name is BigBusiness.com. Our Windows servers running DNS contains a BigBusiness.com zone, with all the names and IP's of our internal servers. Makes sense. But it also contains zones for every external site we connect to as well! So our own DNS server contains zones with name & IP for CompanyB.com CompanyC.com CompanyD.com etc. I don't understand why we need to host and manage zones to look up the IP of other people's equipment?
So I want the end result to be that we've got zones in our DNS for only our own BigBusiness.com machines, and for the lookup of any external machines like
www.CompanyB.com, our DNS server looks "upstream" to CompanyB.com's DNS to resolve their names.
Does this make sense? Can Bind do what I'm looking for? And if anyone can share config file examples, it would be much appreciated.
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LEARN ABOUT CENTOS
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)