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I would start by fixing the DHCP on the subdomain subnet. You will want to send the correct “sub.company.org” for the option 15. Gregory Young From: kickstart-list-bounces@xxxxxxxxxx <kickstart-list-bounces@xxxxxxxxxx>
On Behalf Of Lee, David (LA Int,RAL,LSCI) All our hosts are registered in an Infoblox DHCP+DNS service as MAC+IP+hostname. We have two one domains and one subdomain. When we kickstart-install a new RHEL7 host on the main domain, it cleanly gets its intended hostname from Infoblox/DNS. We can see this very early on by doing an Alt-F2 and querying the hostname.
All is well. But on the subdomain it gets the name "localhost.localdomain" (which seems to be the "in the absence of anything else" default). A wireshark trace of installations shows a DHCP request and ack. On the main domain this is quickly followed by a DNS PTR query from the host, giving the host's IP address and successfully returning
the host's hostname. By contrast, on the subdomain, this query is never initiated. (On both domains, there are subsequent successful DNS queries of other things as part of the ensuing installation, demonstrating that DNS activity is happening.) What might be triggering the hosts on the two different domains to behave differently, that is, send or not send that DNS/PTR query? Looking deeper into that preceding DHCP request/ACK: The main domain, where all works well, is (for example) "company.org". The subdomain (where this lack of hostname issue arises) is a subdomain,
e.g. "sub.company.org". One oddity I spotted, is that the DHCP/ACK returns the same "domain-name" option-15 "company.org" for both. I wonder if that is precipitating a subsequent problematical behaviour in that "sub.company.org" context? Any thoughts? Thanks. -- David Lee -- This e-mail and any attachments may contain confidential, copyright and or privileged material, and are for the use of the intended addressee only. If you are not the intended addressee or an authorised recipient of the addressee please notify us of receipt
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