Ubuntu
systemd package

  1. Bug #1636912
  2. Comment #23

Comment 23 for bug 1636912

Revision history for this message
Steve Langasek (vorlon) wrote : Re: [Bug 1636912] Re: systemd-networkd runs too late for cloud-init.service (net)

On Fri, Oct 28, 2016 at 06:46:07PM -0000, Ryan Harper wrote:
> > > we really want something like
> > > After=networking|networkd-wait-online
> > > which handles determining if networkd was supposed to run or not

> > That already exists, it's network-online.target -- whatever "implements"
> > it (ifupdown, networkd, NM) will hook itself into this target. Nothing
> > more, nothing less, so if cloud-init just wants to wait until it's
> > online, then just make it Requires/After=network-online.target instead
> > of Before= it. (But again -- this is a very strong dependency which is
> > very inconvenient anywhere but cloud environments with essentially one
> > virtual ethernet card).

> It may be that network-online.target is the right place. Scott had some
> reason for not using that explicitly before; I expect some details from
> him.

Because network-online.target is not guaranteed to be reached for the
reasons Martin mentions, so cloud-init depending on it will forever block
other services from starting up, /even if/ you had a valid local data
source.