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Re: Static system level uid/gid's reservations in Fedora/RHEL - how to handle situation?



2009/4/28 Ondřej Vašík <ovasik redhat com>:
>
> Any other idea or some prefered solution?

Another idea (not exclusive with the uuid approach) is to have a
global system flag somewhere in /etc which lets admins make the
tradeoff between:

* Compatibility with previous releases, large uid space for their own
use, many system daemons will get dynamic uids installed
* Large system uid space, incompatible assignment with earlier releases

Basically if you pick the first option, then when some new daemon not
in the static list is installed it gets "adduser" dynamically (and the
files have to be chowned, needs RPM level work most likely to not
break -V etc.).

This approach requires a "flag day" where we bump the system uid space
of course.

Oh regardless of anything else, one thing SSSD or whatever really
should add is something to distinguish between a uid for some system
service and a uid intended for an actual human (the heuristic of
having a $HOME be in /home is kinda ugly).


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