[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries

[Julian Edwards]

So I've looked at this and I think it needs to be a won't-fix as it
stands, but I want your opinion first because there's something else
MAAS should be doing.

LXCs have never been supported as a first class citizen in MAAS, so the
fact that a non-MAAS node obtained an IP with a DNS entry is a little
bit of a side effect of how it was previously implemented. The DNS
entries from dynamically assigned DHCP IPs are dangerous because they
can go out of date at any time and MAAS has no way to track that in a
timely fashion, and in fact this is exactly what was happening in OIL
which pushed us to doing the static IP solution.

MAAS has an API to request an IP address separately to whatever the
nodes may get assigned.  It was intended that juju-created LXCs use this
API to get an IP and configure the LXC network interface(s)
appropriately.

What's missing from MAAS's API is that the IPs obtained on the API don't
have the option of being given a DNS entry.  If we fix that, and then
juju starts using the API, everything will be working perfectly.

Let me know what you think.

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https://bugs.launchpad.net/bugs/1382190

Title:
  LXCs assigned IPs by MAAS DHCP lack DNS PTR entries

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