Github user dkuppitz commented on the issue:
https://github.com/apache/tinkerpop/pull/439
I can't test Systemd, but I've installed Gremlin Server as a service and
that worked like a charm. Manual starts / restarts / stops /status requests
worked as expected. Killing the process didn't lead to any unexpected behavior.
Next I installed the service as a real system service (I may have
overlooked it, but I believe this is not mentioned in the docs):
```
daniel@cube ~ $ sudo update-rc.d -f gremlin-server defaults
Adding system startup for /etc/init.d/gremlin-server ...
/etc/rc0.d/K20gremlin-server -> ../init.d/gremlin-server
/etc/rc1.d/K20gremlin-server -> ../init.d/gremlin-server
/etc/rc6.d/K20gremlin-server -> ../init.d/gremlin-server
/etc/rc2.d/S20gremlin-server -> ../init.d/gremlin-server
/etc/rc3.d/S20gremlin-server -> ../init.d/gremlin-server
/etc/rc4.d/S20gremlin-server -> ../init.d/gremlin-server
/etc/rc5.d/S20gremlin-server -> ../init.d/gremlin-server
daniel@cube ~ $ sudo update-rc.d -f gremlin-server enable
update-rc.d: warning: start runlevel arguments (none) do not match
gremlin-server Default-Start values (2 3 4 5)
update-rc.d: warning: stop runlevel arguments (none) do not match
gremlin-server Default-Stop values (0 1 6)
Enabling system startup links for /etc/init.d/gremlin-server ...
Removing any system startup links for /etc/init.d/gremlin-server ...
/etc/rc0.d/K20gremlin-server
/etc/rc1.d/K20gremlin-server
/etc/rc2.d/S20gremlin-server
/etc/rc3.d/S20gremlin-server
/etc/rc4.d/S20gremlin-server
/etc/rc5.d/S20gremlin-server
/etc/rc6.d/K20gremlin-server
Adding system startup for /etc/init.d/gremlin-server ...
/etc/rc0.d/K20gremlin-server -> ../init.d/gremlin-server
/etc/rc1.d/K20gremlin-server -> ../init.d/gremlin-server
/etc/rc6.d/K20gremlin-server -> ../init.d/gremlin-server
/etc/rc2.d/S20gremlin-server -> ../init.d/gremlin-server
/etc/rc3.d/S20gremlin-server -> ../init.d/gremlin-server
/etc/rc4.d/S20gremlin-server -> ../init.d/gremlin-server
/etc/rc5.d/S20gremlin-server -> ../init.d/gremlin-server
```
Then I rebooted my system and Gremlin Server started right away. Great!
Finally I removed the system service:
```
daniel@cube ~ $ sudo update-rc.d gremlin-server disable
update-rc.d: warning: start runlevel arguments (none) do not match
gremlin-server Default-Start values (2 3 4 5)
update-rc.d: warning: stop runlevel arguments (none) do not match
gremlin-server Default-Stop values (0 1 6)
Disabling system startup links for /etc/init.d/gremlin-server ...
Removing any system startup links for /etc/init.d/gremlin-server ...
/etc/rc0.d/K20gremlin-server
/etc/rc1.d/K20gremlin-server
/etc/rc2.d/S20gremlin-server
/etc/rc3.d/S20gremlin-server
/etc/rc4.d/S20gremlin-server
/etc/rc5.d/S20gremlin-server
/etc/rc6.d/K20gremlin-server
Adding system startup for /etc/init.d/gremlin-server ...
/etc/rc0.d/K20gremlin-server -> ../init.d/gremlin-server
/etc/rc1.d/K20gremlin-server -> ../init.d/gremlin-server
/etc/rc6.d/K20gremlin-server -> ../init.d/gremlin-server
/etc/rc2.d/K80gremlin-server -> ../init.d/gremlin-server
/etc/rc3.d/K80gremlin-server -> ../init.d/gremlin-server
/etc/rc4.d/K80gremlin-server -> ../init.d/gremlin-server
/etc/rc5.d/K80gremlin-server -> ../init.d/gremlin-server
daniel@cube ~ $ sudo update-rc.d -f gremlin-server remove
Removing any system startup links for /etc/init.d/gremlin-server ...
/etc/rc0.d/K20gremlin-server
/etc/rc1.d/K20gremlin-server
/etc/rc2.d/K80gremlin-server
/etc/rc3.d/K80gremlin-server
/etc/rc4.d/K80gremlin-server
/etc/rc5.d/K80gremlin-server
/etc/rc6.d/K20gremlin-server
```
That's it. No surprises, everything's working well. Nothing to add here,
except ...
VOTE: +1
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