[Bug 1576353] Re: install openssh-server by default, prompt for enabling it on server iso install

[Steve Langasek]

On Mon, May 02, 2016 at 05:44:31PM -0000, Colin Watson wrote:
> I'm not sure how that would make any difference at all.  The problem is
> that it's hard for sshd to maintain the necessary state across multiple
> invocations when it's being invoked once per connection rather than
> having a master process that can trivially keep track of all the
> inter-connection state it needs.

When using the sd_listen_fds(3) protocol, systemd is *not* calling accept()
on the service's behalf, and is not launching per-connection instances of
the service.  The socket activation is merely lazy initialization, where
once a connection comes in, the normal ssh service is launched and manages
that socket from there on out.  So there would be a master process keeping
track, unless I've overlooked something?

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https://bugs.launchpad.net/bugs/1576353

Title:
  Install openssh-server with disabled password auth by default on
  servers

Status in Ubuntu CD Images:
  New
Status in openssh package in Ubuntu:
  Triaged

Bug description:
  we want to remove 'cloud-image' seed and join it with 'server' seed.
  openssh-server is one of the few (3) packages that are in cloud image and not in 'ubuntu-server'.

  We'd like to have the server iso install openssh-server by default and
  prompt the user if they want to enable it or not.

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