Any Linux GURU's can help me with a problem starting a service?

Community Playground General Discussions
#1

Hi

Not directly related to Vera, but I am using the Glances hardware monitoring software on my Raspberry Pi, however the instructions given for creating a startup service are not working and I can’t see why not.

If any Linux Guru wants to take a look please see here.

Thanks.

#2

What’s the output of

sudo systemctl status glances.service

as soon as you start the service daemon

#3

Hi

I ran these commands in terminal:

pi@raspberrypi:~ $ sudo systemctl --system daemon-reload
pi@raspberrypi:~ $ sudo systemctl start glances.service
pi@raspberrypi:~ $ sudo systemctl status glances.service

 glances.service - Glances
   Loaded: loaded (/etc/systemd/system/glances.service; enabled; vendor preset: enabled)
   Active: activating (auto-restart) (Result: exit-code) since Wed 2020-09-23 18:21:38 BST; 3s ago
  Process: 32064 ExecStart=/usr/local/bin/glances --quiet --export influxdb (code=exited, status=2)
 Main PID: 32064 (code=exited, status=2)
#4

If I just run this command in terminal it works and starts sending data to the InfluxDB OK.

glances --quiet --export influxdb

However when I follow their instructions for using that same command in a glances.service startup file it doesn’t load.

#5

Best option is to use screen to run your commands. Search for it.

#6

exit code 2 typically means that you have a permissions problem. Make sure that the access permissions are set properly on the glances directory, subdirectories and files in order to run as a system service.

#7

I set the permissions to 0755 but I’ll double check

#8

Assuming that your ExecStart is correct have you tried Restart=always just to further troubleshoot the issue.

#9

Also does your service need to be up running before any other services on boot.

#10

Hey @peterxbmc

Yes it needs to be running after the InfluxDB.

But they added a line of code for that.

[Unit]
Description=Glances
After=network.target influxd.service

[Service]
ExecStart=/usr/local/bin/glances --quiet --export influxdb
Restart=on-failure
RemainAfterExit=yes
RestartSec=30s
TimeoutSec=30s

[Install]
WantedBy=multi-user.target
#11

You need to add the Sleep command in your service daemon before your ExecStart command with ExecStartPre

ExecStartPre=/bin/sleep 30

#12

I think I’ve fixed it. I added the line:

User=pi

in to the glances.service file.

It appears to be loading now after a reboot, fingers crossed it remains that way.

Thanks.

#13

Permissions as suggested above was your issue so. Also careful when constructing service daemons too. They can yield strange results if not carefully scripted.

1 Like
#14

The only other service I created on the Pi was for the Java HA Bridge software, which I use to integrate Vera with Logitech Harmony remotes and their “Home Control” buttons.

I didn’t have any issues setting that service up and it worked first time.

Node-Red I think created its own startup service, I don’t recall creating it myself.

Thanks.