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Bug 1471198

Summary:	[3.6] DNSSearchForming: Event Spam
Product:	OpenShift Container Platform	Reporter:	Eric Paris <eparis>
Component:	Node	Assignee:	Derek Carr <decarr>
Status:	CLOSED ERRATA	QA Contact:	Weihua Meng <wmeng>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	3.6.0	CC:	aos-bugs, jokerman, mmccomas, smunilla
Target Milestone:	---
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Hardware:	Unspecified
OS:	Unspecified
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Clone Of:
Clones:	1473352 (view as bug list)		Environment:
Last Closed:	2017-08-10 05:31:01 UTC	Type:	Bug
Regression:	---	Mount Type:	---
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Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1473352

Description Eric Paris 2017-07-14 16:16:05 UTC

I see lots of events like:

Pod Warning   DNSSearchForming   kubelet, ip-172-31-52-130.ec2.internal   Found and omitted duplicated dns domain in host search line: 'cluster.local' during merging with cluster dns domains

1 pod is showing these events more than once per second.

Do we need these at all?
Should they be rate limited? (are they?)
Is this a misconfiguration of some sort?

Comment 1 Eric Paris 2017-07-14 16:19:16 UTC

*** Bug 1471197 has been marked as a duplicate of this bug. ***

Comment 2 Derek Carr 2017-07-17 14:37:52 UTC

Upstream PR:
https://github.com/kubernetes/kubernetes/pull/48960

Comment 3 Derek Carr 2017-07-17 14:42:09 UTC

The rate limiting work we are carrying in Origin pending:
https://github.com/kubernetes/kubernetes/pull/47367

will make a major improvement to the rate of events in this case.

This event serves the cluster operator more than the cluster end-user.

Agree it should be removed.

Comment 4 Derek Carr 2017-07-17 20:12:10 UTC

Origin PR:
https://github.com/openshift/origin/pull/15246

Comment 5 Derek Carr 2017-07-19 19:28:09 UTC

Origin 3.6 PR:
https://github.com/openshift/origin/pull/15350

Comment 6 Derek Carr 2017-07-20 15:03:09 UTC

merged in 3.6.

Comment 8 Weihua Meng 2017-07-25 02:14:41 UTC

Verified on openshift v3.6.169
Fixed.

No "DNSSearchForming" message in events any more.

Comment 10 errata-xmlrpc 2017-08-10 05:31:01 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, 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/RHEA-2017:1716