Bug 1389116

Summary:	oc dns issues when using OpenDNS
Product:	OpenShift Container Platform	Reporter:	Max Whittingham <mwhittin>
Component:	oc	Assignee:	Maciej Szulik <maszulik>
Status:	CLOSED INSUFFICIENT_DATA	QA Contact:	Xingxing Xia <xxia>
Severity:	low	Docs Contact:
Priority:	low
Version:	3.2.1	CC:	aos-bugs, ccoleman, cfergeau, decarr, jforrest, jokerman, mfojtik, mmccomas, mwhittin, pweil
Target Milestone:	---
Target Release:	3.10.0
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-10-01 16:13:36 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:
Bug Depends On:
Bug Blocks:	1303130

Description Max Whittingham 2016-10-26 21:49:06 UTC

Description of problem:
The 'oc' cli tool will not function when the system is using OpenDNS (208.67.222.222). When using Google's DNS server (8.8.8.8) it functions as expected on Mac OS X 10.12

Version-Release number of selected component (if applicable):


How reproducible:
Every time

Steps to Reproduce:
Use OpenDNS instead of Google's DNS server

Comment 2 Max Whittingham 2016-11-01 16:23:10 UTC

$ oc version
oc v3.1.1.6
kubernetes v1.1.0-origin-1107-g4c8e6f4
 
$ uname -a
Darwin Galactica.local 16.1.0 Darwin Kernel Version 16.1.0: Thu Oct 13 21:26:57 PDT 2016; root:xnu-3789.21.3~60/RELEASE_X86_64 x86_64

Comment 3 Fabiano Franz 2016-11-01 18:29:08 UTC

Can you confirm this is a Mac OS X only issue? I wasn't able to reproduce it on Fedora, not even trying to force cgo to DNS resolution, as specified in Go's Name Resolution[1] topic:

GODEBUG=netdns=go+2 oc login https://api.tsi.openshift.com/
GODEBUG=netdns=cgo+2 oc login https://api.tsi.openshift.com/

Both succeeded.

Also, your nslookup command prints 10.0.0.1 as the server, can you confirm it's correctly using OpenDNS (208.67.222.222)?

[1] https://golang.org/pkg/net/#hdr-Name_Resolution

Comment 4 Jordan Liggitt 2016-11-01 20:30:13 UTC

possibly related to https://github.com/kubernetes/kubernetes/issues/23130?

Comment 5 Fabiano Franz 2016-11-01 23:38:18 UTC

Yes, definitely looks like the same issue.

Adding Clayton and Derek.

Comment 6 Fabiano Franz 2017-04-20 17:30:12 UTC

We're still depending on a Go fix here

https://github.com/golang/go/issues/12524
https://github.com/golang/go/issues/16345

Comment 8 Maciej Szulik 2019-10-01 16:13:36 UTC

I see the customer case is closed for a while, I'm closing this BZ as well. Feel free to re-open if the issues still exists.