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Bug 1653131

Summary: cloud-init remove 'NOZEROCONF=yes' from /etc/sysconfig/network
Product: Red Hat Enterprise Linux 7 Reporter: Keigo Noha <knoha>
Component: cloud-initAssignee: Eduardo Otubo <eterrell>
Status: CLOSED ERRATA QA Contact: Vratislav Hutsky <vhutsky>
Severity: high Docs Contact:
Priority: unspecified    
Version: 7.6CC: astupnik, cj-jeon, cmelanson, eterrell, huzhao, jgreguske, jomurphy, ldu, leiwang, linl, lpic.lt, lrotenbe, pkomarov, puiterwijk, ribarry, ricardo.barberis, sacpatil, smykhail, vhutsky, wshi, xuli, yacao, yujiang, yuxisun
Target Milestone: rcKeywords: Regression
Target Release: 7.7   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: cloud-init-18.2-5.el7 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of:
: 1691685 (view as bug list) Environment:
Last Closed: 2019-08-06 12:51:00 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:    
Bug Blocks: 1691685    
Attachments:
Description Flags
Fedora's patch none

Description Keigo Noha 2018-11-26 02:05:41 UTC 
Description of problem:
cloud-init v18.2 removes 'NOZEROCONF=yes' from overcloud nodes.


Version-Release number of selected component (if applicable):
cloud-init-18.2-1.el7_6.1.x86_64

How reproducible:
Every deployment.

Steps to Reproduce:
1. Deploy overcloud nodes using an image in RHOSP13z3.
2.
3.

Actual results:
'NOZEROCONF=yes' doesn't exist in /etc/sysconfig/network.

Expected results:

'NOZEROCONF=yes' exists in /etc/sysconfig/network.

Additional info:
Comment 4 Ricardo J. Barberis 2018-12-13 14:50:39 UTC 
Hello,

We have an old OpenStack installation (Icehouse) and we need 'NOZEROCONF=yes' to prevent having a 169.254.0.0 route and be able to reach OpenStack's metadata service.

I found a bug (https://bugzilla.redhat.com/show_bug.cgi?id=1558641) in which Fedora applied a patch to cloud-init 17.1 to avoid this overwriting.

I applied that patch to cloud-init-18.2-1.el7.centos.1.src.rpm and recompiled it and now it doesn't overwrite /etc/sysconfig/network anymore.


BTW, I see this bug is marked as NEEDINFO. What info is needed? Maybe I can help.
Comment 5 Keigo Noha 2018-12-19 06:44:13 UTC 
Hello Ricardo,

Thank you for your comment on this bugzilla. It is really helpful for us.
It seems that the fix in RHBZ#1558641 might be changed between cloud-init-18.2 and cloud-init-17.
I'm checking the changelogs in cloud-init.

And needinfo means that someone requests an information or opinion onto his/her comment.

Best Regards,
Keigo Noha
Comment 6 Keigo Noha 2018-12-19 07:27:17 UTC 
Hello Eduardo,

The fix for cloud-init-17.1-4.fc28 for not changing default network configuration is not merged into the upstream.
I put patch in Fedora's package into this bugzilla.

Best Regards,
Keigo NOha
Comment 7 Keigo Noha 2018-12-19 07:28:20 UTC 
Created attachment 1515501 [details]
Fedora's patch

A patch in Fedora.
Comment 12 Eduardo Otubo 2019-01-11 14:57:09 UTC 
*** Bug 1651171 has been marked as a duplicate of this bug. ***
Comment 15 Keigo Noha 2019-01-29 05:19:41 UTC 
Hi Eduardo,

Do you have any updates on this bugzilla?

Regards,
Keigo Noha
Comment 16 Eduardo Otubo 2019-02-08 13:58:47 UTC 
(In reply to Keigo Noha from comment #15)
> Hi Eduardo,
> 
> Do you have any updates on this bugzilla?
> 
> Regards,
> Keigo Noha

I don't have any updates on this.
Looking forward on puiterwijk's opinions on this, though
Comment 36 Miroslav Rezanina 2019-03-25 14:07:10 UTC 
Fix included in cloud-init-18.2-5.el7
Comment 38 Alex Stupnikov 2019-04-04 10:04:47 UTC 
Workaround: we were able to overcome this issue by downgrading cloud-init to v 0.7.9.
Temporary solution: install cloud-init 0.7.9 instead of cloud-init 18.2

BR, Alex.
Comment 44 errata-xmlrpc 2019-08-06 12:51:00 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/RHBA-2019:2123