Creating system users and system groups

[Mark Shuttleworth]

Our general thinking is that we will maintain a standard list of those,
and approve user creation for specific snaps. Would you be willing to go
with _avahi and _lp and _lpadmin? Backward-looking names might get
grandfathered, but we'd prefer newer software to use a qualifier like _
to disambiguate such system users from end users.

Mark

On 02/02/17 08:36, Simon Fels wrote:
> Hey Till,
>
> That is (as far as I know) not possible today. Those groups and users
> have to exist beforehand. A similar problem also exists for LXD. There
> is a bug at https://bugs.launchpad.net/snappy/+bug/1606510 which has a
> few more details.
>
> regards,
> Simon
>
> On Wed, Feb 1, 2017 at 9:56 PM, Till Kamppeter
> <till.kamppeter at gmail.com <mailto:till.kamppeter at gmail.com>> wrote:
>
>     Hi,
>
>     I want to snap CUPS and for that also to snap avahi-daemon.
>
>     A problem I am running into is that these services use special
>     system users and groups. avahi-daemon uses the user "avahi" and
>     CUPS uses the user "lp", and the groups "lp" and "lpadmin".
>
>     How can I make my snap create such users and groups on install and
>     remove them on uninstall?
>
>        Till
>
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