[Maas-devel] DNS problems and bug 1250435

[Raphaël Badin]

On 02/05/2014 02:54 AM, Julian Edwards wrote:
> https://bugs.launchpad.net/maas/+bug/1250435
>
> One solution for this is to simply ditch the CNAMEs and use the actual chosen
> host name in the A records.  This would mean a slightly intrusive change so
> that we don't fill the zone with the old N-N-N-N style first.
>
> Can you guys remember why we did this in the first place, and the
> ramifications of not doing it?

IIRC we did this to simplify the writing of reverse zone files: they are 
written once and for all.  See the following thread 
https://lists.launchpad.net/maas-devel/msg00355.html for details.

> Alternatively, the reason this bug crops up is because the node's hostname is
> set to the CNAME rather than the A record.  We could do a quicker fix if we
> use the A record as its hostname.  The CNAME would still exist for humans, but
> this should fix picky apps like Postgres and SSH.

A less dramatic change is to hand out the generated hostname to clients 
like Juju.  The user-provided hostname would still be there for 
convenience but the charm would manipulate A records of the form 
"N-N-N-N.domain."