System service running as user is terminated on logout

Question

I have a system service that is executed for selected users. Name is serv@<uid> (<uid> is UID of the user). I want to share user's resource limits with the service (place it into user-<uid>.slice) and I also want to use his permissions.

/etc/systemd/system/[email protected]

[Unit]
Description=My service for user %i

[Service]
Type=simple
ExecStart=/usr/local/bin/serv.sh
Restart=always
User=%i
Slice=user-%i.slice
SuccessExitStatus=0 255 SIGKILL SIGTERM

[Install]
WantedBy=multi-user.target

When the user logs out, the service is terminated using SIGTERM. Why isn't the service restarted? How can I set it up so the service will not be terminated?

score 11 · Answer 1 · answered Jun 21 '19 at 11:36

11

For me the solution was loginctl enable-linger username. Without this the service would die when the user logged out. https://wiki.archlinux.org/index.php/Systemd/User#Automatic_start-up_of_systemd_user_instances

answered Jun 21 '19 at 11:36

burneddi

220
1
4

Thank you so much! You saved my day! – ata Apr 26 '20 at 08:26
THIS WAS IT. Thank you @burneddi – macetw May 25 '22 at 18:19

score 6 · Accepted Answer · answered May 28 '19 at 15:13

6

You can change logind configuration:

/etc/systemd/logind.conf

[Login]
…
KillUserProcesses=no
…

This also changes behavior for other services and background processes (like screen, tmux). See issue #3483;

Run systemctl restart systemd-logind after that.

answered May 28 '19 at 15:13

jiwopene

1,002
7
19

I use `tmux` and others so it will solve multiple problems at once. – jiwopene May 28 '19 at 15:14

System service running as user is terminated on logout

2 Answers2