DNS config is invalid after a node gets enlisted.

[Raphaël Badin]

After a node gets enlisted, its hostname is set to a generated address based on its IP address (e.g. 192-168-10-10). When the DNS config gets written, if the hostname is not changed to a custom value, the CNAME record conflicts with a pre-populated A record for that IP:

Content of /etc/bind/maas/zone.master
    IN NS master.
master. IN A 192.168.10.1
[...]
192-168-10-10 IN A 192.168.10.10
[...]
192-168-10-10 IN CNAME 192-168-10-10

One solution is to change DNSForwardZoneConfig.get_cname_mapping so that the records where generated_hostname(ip) == hostname are filtered out.

== TEST CASE ==
1. Install MAAS and manage DHCP/DNS server.
2. Enlist machine
3. Make sure DNS config is correct

Tested in the lenovo lab. No CNAME records appear in the zone.master file.

[Dave Walker (davewalker)]

Hello Raphaël, or anyone else affected,

Accepted into quantal-proposed. The package will build now and be available in a few hours in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please change the bug tag from verification-needed to verification-done. If it does not, change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

[Launchpad Janitor (janitor)]

This bug was fixed in the package maas - 0.1+bzr1269+dfsg-0ubuntu1

---------------
maas (0.1+bzr1269+dfsg-0ubuntu1) quantal-proposed; urgency=low

  * New upstream bugfix release
    - Fixes commissioning failing to set memory attribute. (LP: #1064638)
    - Fixes node listing by adding pagination (LP: #1064672)
    - Changes default bind rndc key which breaks initscripts (LP: #1066938)
    - Fixes invalid DNS config once node is enlisted (LP: #1066958)
    - Reference documentation link to correct URL (LP: #1067261)

  [ Andres Rodriguez ]
  * debian/rules: Change upstream branch.

  [ Gavin Panella ]
  * debian/maas-dns.postinst: Remove MAAS-related include lines from named's
    config before adding a new one (LP: #1066929)

  [ Raphael Badin ]
  * debian/extras/maas-region-celeryd: Remove whitespace that affects DNS
    rabbitmq queue. (LP: #1067929)
 -- Andres Rodriguez <email address hidden> Tue, 16 Oct 2012 10:31:37 -0400

[Dave Walker (davewalker)]

The verification of this Stable Release Update has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regresssions.