authselect changed pam_systemd session from optional to required. When
the HBAC rule allow_all is disabled and replaced with more fine grained
rules, loginsi now to fail, because systemd's user@.service is able to
create a systemd session.
Add systemd-user HBAC service and a HBAC rule that allows systemd-user
to run on all hosts for all users by default. ipa-server-upgrade creates
the service and rule, too. In case the service already exists, no
attempt is made to create the rule. This allows admins to delete the
rule permanently.
See: https://bugzilla.redhat.com/show_bug.cgi?id=1643928
Fixes: https://pagure.io/freeipa/issue/7831
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
This is to make initial installation and testing easier.
Use the --no_hbac_allow option on the command-line to disable this when
doing an install.
To remove it from a running server do: ipa hbac-del allow_all
