Bug 1896384

Summary:	[ovirt IPI]: local coredns resolution not working
Product:	OpenShift Container Platform	Reporter:	Douglas Schilling Landgraf <dougsland>
Component:	Installer	Assignee:	Douglas Schilling Landgraf <dougsland>
Installer sub component:	OpenShift on RHV	QA Contact:	Michael Burman <mburman>
Status:	CLOSED ERRATA	Docs Contact:
Severity:	high
Priority:	high	CC:	eslutsky, gzaidman, mburman, mrhodes, vvoronko
Version:	4.7	Keywords:	Regression, Tracking
Target Milestone:	---
Target Release:	4.7.0
Hardware:	All
OS:	All
Whiteboard:
Fixed In Version:		Doc Type:	No Doc Update
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-02-24 15:32:32 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1882209
Bug Blocks:

Description Douglas Schilling Landgraf 2020-11-10 12:38:14 UTC

As IPI provide local DNS in addition to coredns running with OCP  & it adds local nodes as nameserver in resolv.conf [ via /etc/NetworkManager/dispatcher.d/30-resolv-prepender ] which is creation issues

request is sometimes sent to local coredns & sometimes to external dns. This behavior do not allow nodes to reach RHV Engine and the installation fail.


Version:

$ openshift-install version
4.6/4.7

Platform:
ovirt

Please specify:
* IPI 

What happened?
Installation failed and RHV Engine cannot be reached.

Comment 1 Evgeny Slutsky 2020-11-17 09:21:36 UTC

this behavior didn't change since 4.6 and we didn't have any issues back then.

Comment 2 Douglas Schilling Landgraf 2021-01-21 15:50:07 UTC

Moving to modified as 1882209

Comment 3 Douglas Schilling Landgraf 2021-01-21 16:09:23 UTC

The test basically needs to cover if the DNS resolution is working correctly. It hard to reproduce the bug but it happens sometimes. In my env. the patch fixes the report.

Comment 6 Michael Burman 2021-02-04 07:57:59 UTC

bz 1882209 has been verified.
Based on this, the bug can be considered as verified from our side as well. Verified on 4.7.0-fc.5

Comment 9 errata-xmlrpc 2021-02-24 15:32:32 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Moderate: OpenShift Container Platform 4.7.0 security, bug fix, and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2020:5633