[Bug 1689410] Re: nplan with networkd + resolvconf without resolved, results in no DNS resolution

[Ryan Harper]

On Tue, May 9, 2017 at 11:23 AM, Steve Langasek <
steve.langasek at canonical.com> wrote:

> Hi Ryan,
>
> On Tue, May 09, 2017 at 02:20:17PM -0000, Dimitri John Ledkov wrote:
>
> > <rharper> it does create the yaml and call generate, but it's not
> > sufficient to create the symlink IIRC due to the code in netplan which
> > doesn't generate the symlinks in /run if it;s not invoked as a genartor
>
> There is no bug report at https://bugs.launchpad.net/ubuntu/+source/nplan
> for this.  Is there one on cloud-init?
>

I did not file a bug against netplan for that; it's not clear to me that
it's a
bug in netplan, but I can and we can discuss the "late" cloud-init call to
netplan generate for the netplan rendere.



>
> > <rharper> I've picked this apart too many times;  we've got the set of
> > changes needed documented and staged for ubuntu-core
>
> Where are these staged?
>

https://github.com/snapcore/core/pull/30
https://github.com/snapcore/core-build/pull/5
https://github.com/raharper/snapd/commit/3e83b3aa281f02bce9a230a812ad4f02d0d66c22


>
> > <rharper> but it's not landed in xenial for cloud-init proper due to not
> > wanting to foist networkd onto xenial users at this time
>
> I don't understand this.  Why would any of these staged changes not be
> conditional on use of nplan, thus avoiding any "foisting"?
>

Maybe we can;  I don't think we can change the default network renderer
in Xenial by default, that has upgrade implications; I don't think we want
to
switch existing users over to netplan by an upgrade to cloud-init.

I'm hesitant to say apt-get install nplan implies that you want cloud-init
to
use netplan to rendering things as well.

So what remains is some unit changes (ensure that network-online.target
depends on systemd-networkd-wait-online.service)
and cloud-config change (cloud-init's network renderer should be netplan
over eni).

How would those changes get introduced when a user wants to try netplan on
xenial?


>
> --
> Steve Langasek                   Give me a lever long enough and a Free OS
> Debian Developer                   to set it on, and I can move the world.
> Ubuntu Developer                                    http://www.debian.org/
> slangasek at ubuntu.com                                     vorlon at debian.org
>
> --
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> report.
> https://bugs.launchpad.net/bugs/1689410
>
> Title:
>   nplan with networkd + resolvconf without resolved, results in no DNS
>   resolution
>
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https://bugs.launchpad.net/bugs/1689410

Title:
  nplan with networkd + resolvconf without resolved, results in no DNS
  resolution

Status in ifupdown package in Ubuntu:
  Invalid
Status in nplan package in Ubuntu:
  Invalid
Status in resolvconf package in Ubuntu:
  Incomplete
Status in systemd package in Ubuntu:
  Incomplete

Bug description:
  if nplan yaml specifies nameservers which are passed onto networkd,
  they will never take effect on systems that do not use systemd-
  resolved.

  This is because there is no integration between nplan and resolvconf,
  either directly; via networkd; via NetworkManager.

To manage notifications about this bug go to:
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