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Bug 1537439

Summary: cloud-init with config drive does not populate dns information correctly [rhel-7.4.z]
Product: Red Hat Enterprise Linux 7 Reporter: Oneata Mircea Teodor <toneata>
Component: cloud-initAssignee: Ryan McCabe <rmccabe>
Status: CLOSED ERRATA QA Contact: Udi Shkalim <ushkalim>
Severity: high Docs Contact:
Priority: high    
Version: 7.3CC: aherr, akaris, apannu, dustymabe, fdinitto, jgreguske, jherrman, lars, oblaut, rmccabe, ssigwald, swadeley, ushkalim, vhutsky, wrichter
Target Milestone: rcKeywords: Triaged, ZStream
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: cloud-init-0.7.9-9.el7_4.3 Doc Type: Bug Fix
Doc Text:
Prior to this update, the cloud-init service in some cases did not provide newly created virtual machines with appropriate DNS configuration. The underlying code has been fixed, which prevents this problem from occurring.
Story Points: ---
Clone Of: 1454491 Environment:
Last Closed: 2018-03-06 21:44:01 UTC Type: ---
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: 1454491    
Bug Blocks:    

Description Oneata Mircea Teodor 2018-01-23 08:35:37 UTC
This bug has been copied from bug #1454491 and has been proposed to be backported to 7.4 z-stream (EUS).

Comment 9 Udi Shkalim 2018-02-08 15:31:32 UTC
Verified on: cloud-init-0.7.9-9.el7_4.3.x86_64

$ cat user_data 
#cloud-config
password: fedora
chpasswd: { expire: False }


openstack subnet show d1d03149-a6bc-4022-ab5a-16763098752b
+-------------------+--------------------------------------+
| Field             | Value                                |
+-------------------+--------------------------------------+
| allocation_pools  | 192.168.100.2-192.168.100.254        |
| cidr              | 192.168.100.0/24                     |
| created_at        | 2018-02-06T14:39:21Z                 |
| description       |                                      |
| dns_nameservers   | 10.35.28.28                          |
| enable_dhcp       | False                                |
| gateway_ip        | 192.168.100.1                        |
| host_routes       |                                      |
| id                | d1d03149-a6bc-4022-ab5a-16763098752b |
| ip_version        | 4                                    |
| ipv6_address_mode | None                                 |
| ipv6_ra_mode      | None                                 |
| name              | internal-subnet                      |
| network_id        | 5682affc-7cd8-4413-b824-eccfafd02426 |
| project_id        | 9ba3b3f772a849c8b709644c894bc85e     |
| revision_number   | 3                                    |
| segment_id        | None                                 |
| service_types     |                                      |
| subnetpool_id     | None                                 |
| tags              |                                      |
| updated_at        | 2018-02-08T14:54:38Z                 |
+-------------------+--------------------------------------+


openstack server create --image fedora27 --flavor m1.med --nic net-id=$(openstack network show -c id -f value internal-net) fedora-$(echo $RANDOM) --user-data user_data --config-drive True

###################### Inside the instance ########################
[fedora@cirros-17255 ~]$ cat /etc/NetworkManager/conf.d/99-cloud-init.conf
# Created by cloud-init on instance boot automatically, do not edit.
#
[main]
dns = none
 
 
[fedora@cirros-17255 ~]$ cat /etc/resolv.conf
; Created by cloud-init on instance boot automatically, do not edit.
;
nameserver 10.35.28.28
search localdomain
 
[fedora@cirros-17255 ~]$ cat /etc/sysconfig/network-scripts/ifcfg-eth0
# Created by cloud-init on instance boot automatically, do not edit.
#
BOOTPROTO=static
DEFROUTE=yes
DEVICE=eth0
GATEWAY=192.168.100.1
HWADDR=fa:16:3e:7d:62:01
IPADDR=192.168.100.4
MTU=1450
NETMASK=255.255.255.0
ONBOOT=yes
TYPE=Ethernet
USERCTL=no

Comment 12 errata-xmlrpc 2018-03-06 21:44:01 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/RHBA-2018:0407