Bug 1561688

Summary:	Tripleo overcloud is including a unknown DNS server
Product:	Red Hat OpenStack	Reporter:	Alex Krzos <akrzos>
Component:	openstack-tripleo-heat-templates	Assignee:	Emilien Macchi <emacchi>
Status:	CLOSED DUPLICATE	QA Contact:	Gurenko Alex <agurenko>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	12.0 (Pike)	CC:	mburns, rhel-osp-director-maint, uemit.seren
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Last Closed:	2018-03-28 18:11:42 UTC	Type:	Bug
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Description Alex Krzos 2018-03-28 17:09:43 UTC

Description of problem:

Fresh overcloud deployed with Pike build from (2018-03-19.3) and the overcloud nodes have an extra DNS server before the actual set DNSServers parameter.  This introduces DNS time outs on yum transactions but possibly other things are affected by the non-existent DNS server 192.168.122.1.


DNSServers parameter was included with the deploy command templates:

parameter_defaults:
  DnsServers: ["10.12.64.161"]


[root@overcloud-controller-0 ~]# cat /etc/resolv.conf 
; Created by cloud-init on instance boot automatically, do not edit.
;
# Generated by NetworkManager
nameserver 192.168.122.1
nameserver 10.12.64.161

Deploy command and templates included here
https://gist.github.com/akrzos/0ef94734304709c457bc14636a33b021


Version-Release number of selected component (if applicable):
Pike (OSP 12)
Build: 2018-03-19.3

How reproducible:
Always with this build


Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info:

Comment 1 Emilien Macchi 2018-03-28 18:11:42 UTC

we already have a fix for master/queens, and we'll backport it to pike: https://bugzilla.redhat.com/show_bug.cgi?id=1545842

*** This bug has been marked as a duplicate of bug 1545842 ***

Comment 2 Alex Krzos 2018-03-28 18:59:44 UTC

(In reply to Emilien Macchi from comment #1)
> we already have a fix for master/queens, and we'll backport it to pike:
> https://bugzilla.redhat.com/show_bug.cgi?id=1545842
> 
> *** This bug has been marked as a duplicate of bug 1545842 ***

To be clear though, this is with RHEL 7.4 and not RHEL 7.5.

[root@overcloud-controller-0 ~]# cat /etc/resolv.conf 
; Created by cloud-init on instance boot automatically, do not edit.
;
# Generated by NetworkManager
nameserver 192.168.122.1
nameserver 10.12.64.161
[root@overcloud-controller-0 ~]# cat /etc/redhat-release 
Red Hat Enterprise Linux Server release 7.4 (Maipo)
[root@overcloud-controller-0 ~]# cat /etc/rhosp-release 
Red Hat OpenStack Platform release 12.0 (Pike)
[root@overcloud-controller-0 ~]# 


It seems that the previous bug only applied to Queens with RHEL 7.5, are we sure the same issue and fix will work in the case of Pike with RHEL 7.4?