Need help with shell_command

Installation Home Assistant OS
1

I am trying to use a shell_command in my hass.io setup to reboot a RPi running LibreElec. I have tried the command from the command line in hass.io and it works fine, but when I create a shell_command and calls it, I get
Error running command: bash reboot_kodi_kitchen.sh, return code: 255
in the logfile.
The bash file is located directly under / and I have also tried putting it in /config and calling it with
bash /config/reboot_kodi_kitchen.sh
but same thing.

The bash file I am calling issues the command ssh root@libreelec reboot. That command works from the command line too, as I have copied the ssh-key from hass.io to the RPi running LibreElec.

Any ideas on how to solve this?

Thanks!

2

Have you tested it running it as the homeassistant user?

3

Nope, not sure how to do that in hass.io.

4

What user are you testing as? whoami will tell you. You are connecting via ssh into hass.io i assume? Can you post the output of the terminal?

5

Yes, connecting through ssh.

core-ssh:/# whoami
root
6

Just run sudo su -s /bin/bash - homeassistant then copy your ssh keys as that user and test your script again.

7

Ok, will test it shortly.

8 
core-ssh:/# sudo su -s /bin/bash - homeassistant
-bash: sudo: command not found
core-ssh:/# su -s /bin/bash - homeassistant
su: unknown user homeassistant
9

I know hass.io runs in a Docker container, but unfortunately I don’t fully understand that environment.

10

Hmm, can you run ps aux| grep hass and post the output? I don’t have a hass environment set up (need to do that sometime) so I am guessing too. User is probably hass so you could try su ing to that user.

11 
core-ssh:/# ps aux| grep hass
 2356 root       0:00 grep hass
12

Dang, just do ps aux. I really need to set up hass so I can help more with this lol

13 
core-ssh:/# ps aux
PID   USER     TIME   COMMAND
    1 root       0:00 /dev/init -- /usr/bin/entry.sh /run.sh
    9 root       0:00 /usr/sbin/sshd -D -e
   10 root       0:02 udevd
 1914 root       0:00 sshd: root@pts/0
 1916 root       0:00 -bash
 2357 root       0:00 ps aux
14

Ok, after a lot of googling and trial and error I solved it!
I generated a new key and put it in /config/.ssh/id_rsa
I copied the new key with ssh-copy-id to my LibreElec host
I also added a file /config/ssh_config with the following content:

Host *
    StrictHostKeyChecking no

After that I was able to use the following shell_command without issues:
ssh -F /config/ssh_config -i /config/.ssh/id_rsa root@ip_of_libreelec 'reboot' 2> /config/command.log
The last part is just to see the output from the host when issuing the command.

1 Like
15

This worked for me. Thanks.