** Tags added: xenial
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https://bugs.launchpad.net/bugs/1809989
Title:
deluser does not clean up systemd files
Status in adduser package in Ubuntu:
New
Bug description:
In
Description: Ubuntu 16.04.4 LTS
Release: 16.04
using
adduser package Version: 3.113+nmu3ubuntu4
systemd package Version: 229-4ubuntu21.10
deluser will not clean up data in /run/user/<uid> directory. If a user is
created then under many circumstances, such as systemd enable-linger being
called for the user, data for that user will exist in /run/user/<uid>. Running
deluser for such as user will remove the user, home directory, etc. but not the
/run/user data.
** Most importantly **, the next user creation will be given the open
uid formerly held by the deleted user. The new user can then have
broken systemd sessions so that the systemctl --user command will
always fail with the error
Failed to connect to bus: No such file or directory
A system reboot seems to be the only thing that will reliably clean up
the cruft in /run/user/<uid>
Expected behavior would be that if a user is successfully removed then
there should be no directory remaining for that user's uid under
/run/user.
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