10

I created a service.

admin@Xroklaus:~ $ cat /etc/systemd/user/duniter.service 
[Unit]
Description=Duniter node
After=network.target
ConditionPathExists=/home/folatt/.config/duniter/duniter_default/duniter.db

[Service]
Group=folatt
User=folatt
Type=forking
ExecStart=/usr/bin/duniter webstart
ExecReload=/usr/bin/duniter webrestart
ExecStop=/usr/bin/duniter stop
Restart=on-failure

[Install]
WantedBy=multi-user.target

After rebooting, it does not load.

folatt@Xroklaus:~ $ systemctl --user status duniter.service
● duniter.service - Duniter node
   Loaded: loaded (/etc/systemd/user/duniter.service; enabled)
   Active: failed (Result: start-limit) since Sun 2018-01-07 20:31:43 UTC; 1min 3s ago
  Process: 2212 ExecStart=/usr/bin/duniter webstart (code=exited, status=216/GROUP)

Journalctl gives a bit more information of the error.

admin@Xroklaus:~ $ sudo journalctl -p 3 --no-pager
-- Logs begin at Sun 2018-01-07 20:30:33 UTC, end at Sun 2018-01-07 20:31:49 UTC. --
Jan 07 20:30:39 Xroklaus bluetoothd[876]: Sap driver initialization failed.
Jan 07 20:30:39 Xroklaus bluetoothd[876]: sap-server: Operation not permitted (1)
Jan 07 20:31:26 Xroklaus systemd[1]: Failed to start LSB: Start and stop the mysql database server daemon.
Jan 07 20:31:42 Xroklaus systemd[2203]: Failed at step GROUP spawning /usr/bin/duniter: Operation not permitted
Jan 07 20:31:42 Xroklaus systemd[2177]: Failed to start Duniter node.
Jan 07 20:31:42 Xroklaus systemd[2206]: Failed at step GROUP spawning /usr/bin/duniter: Operation not permitted
Jan 07 20:31:42 Xroklaus systemd[2177]: Failed to start Duniter node.
Jan 07 20:31:43 Xroklaus systemd[2208]: Failed at step GROUP spawning /usr/bin/duniter: Operation not permitted
Jan 07 20:31:43 Xroklaus systemd[2177]: Failed to start Duniter node.
Jan 07 20:31:43 Xroklaus systemd[2210]: Failed at step GROUP spawning /usr/bin/duniter: Operation not permitted
Jan 07 20:31:43 Xroklaus systemd[2177]: Failed to start Duniter node.
Jan 07 20:31:43 Xroklaus systemd[2212]: Failed at step GROUP spawning /usr/bin/duniter: Operation not permitted
Jan 07 20:31:43 Xroklaus systemd[2177]: Failed to start Duniter node.
Jan 07 20:31:43 Xroklaus systemd[2177]: Failed to start Duniter node.

But that's as far as I got. I don't know what the solution is to this.

9

I moved the service file and removed the user and group, while also changing the install target like this:

/usr/lib/systemd/user/duniter.service

[Unit]
Description=Duniter node
After=network.target
ConditionPathExists=/home/folatt/.config/duniter/duniter_default/duniter.db

[Service]
Type=forking
ExecStart=/usr/bin/duniter webstart
ExecReload=/usr/bin/duniter webrestart
ExecStop=/usr/bin/duniter stop
Restart=on-failure

[Install]
WantedBy=default.target
4
  • 1
    for user service - we should place the service at $HOME/.config/systemd/user right ? where have you placed service file ? how will systemd know which user you want the service file to belong ? Oct 27 '18 at 16:32
  • 1
    I got it to work by removing this: User = ubuntu Oct 27 '18 at 16:42
  • 1
    I guess this is because systemd runs user units as the user, and you can't switch user or group without escalating privileges. That's why the error message says Operation not permitted. (I made the same mistake when turning a system unit into a user unit...)
    – bovender
    Apr 8 '19 at 9:43
  • See also man systemd.exec, section on "CREDENTIALS" (freedesktop.org/software/systemd/man/…).
    – bovender
    Apr 8 '19 at 9:51
2

If you have services where the user and/or group is dependant on network services e.g. LDAP, you must add the respective services (such as nslcd) to the Wants and After lines of the [Unit] section of the service definition file.

If a user or group is defined in a network directory that is not available yet, the service will fail to start with the "Failed at step GROUP spawning" error.

1
  • I know this answer does not directly help OP's problem, but given this answer is the first result for searches for "Failed at step GROUP spawning" I thought I should add it as a reference.
    – flibwib
    Nov 19 '19 at 5:51

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