Bug 1561688 - Tripleo overcloud is including a unknown DNS server
Summary: Tripleo overcloud is including a unknown DNS server
Keywords:
Status: CLOSED DUPLICATE of bug 1545842
Alias: None
Product: Red Hat OpenStack
Classification: Red Hat
Component: openstack-tripleo-heat-templates
Version: 12.0 (Pike)
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
: ---
Assignee: Emilien Macchi
QA Contact: Gurenko Alex
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2018-03-28 17:09 UTC by Alex Krzos
Modified: 2018-04-16 15:28 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
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Clone Of:
Environment:
Last Closed: 2018-03-28 18:11:42 UTC
Target Upstream Version:
Embargoed:


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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?


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