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Bug 1844933

Summary:	[RHOSP16] Overcloud deployment is failing as overcloud node fail to get ip from dnsmasq during PXE boot
Product:	Red Hat OpenStack	Reporter:	Khomesh Thakre <kthakre>
Component:	dnsmasq	Assignee:	Petr Menšík <pemensik>
Status:	CLOSED DUPLICATE	QA Contact:	Ofer Blaut <oblaut>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	16.0 (Train)	CC:	bcafarel, bhaley, hjensas, kmehta, sandyada
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Hardware:	Unspecified
OS:	Unspecified
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Last Closed:	2020-12-07 16:44:03 UTC	Type:	Bug
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Embargoed:

Description Khomesh Thakre 2020-06-08 04:24:35 UTC

Description of problem:
Dnsmasq is not providing IP during the pxe boot causing the overcloud deployment failure.

During the pxe boot, overcloud node request for the DHCP IP but dnsmasq didn't responds. 

Using tcpdump we verify that that the dhcp request reaches to ctlplane tap devices inside the namspace.

Version-Release number of selected component (if applicable):
Red Hat OpenStack Platform release 16.0.2 (Train)
Red Hat Enterprise Linux release 8.1 (Ootpa)



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Comment 4 Brian Haley 2020-06-18 16:43:28 UTC

Do you have the logs available, or can I login to the controller?  I'm curious what the contents of the dhcp lease directory are, as well as a trace of the dhcp-agent log.

This could also be related to https://bugzilla.redhat.com/show_bug.cgi?id=1847039 where the agent is having trouble reading the leases file and not releasing something it should.