How to shutdown raspberry from HA (Raspbian)

Configuration
1

hi!

Someone knows how to switch off the raspberry from Home Assistant witch a button on Home or some else?

2

create a shell_command with sudo shutdown now as a command and then create a script that will call this shell_command.
you will need to ensure user that HA runs under has rights to run this command without a password.
You can use the NOPASSWD directive in your /etc/sudoers file.

If your user is called user and your host is called host you could add these lines to /etc/sudoers :

user host = (root) NOPASSWD: /sbin/shutdown
user host = (root) NOPASSWD: /sbin/reboot

This will allow the user user to run the desired commands on host without entering a password. All other sudo ed commands will still require a password.

1 Like
3

Hmmm not sure i understand clearly.
Username is xxxx and host is 192.168.1.29.
What to add in sudoers file?

4

Thanks!!! That it’ll work!! :smiley:

1 Like
5

Translated to raspbian with Home Asisstant that’s:

  1. First run “sudo visudo” for edit the /etc/sudoers file.
  2. If our user for home assistant is homeassistant write under root ALL=(ALL:ALL) ALL:
    homeassistant ALL=(root) NOPASSWD: /sbin/shutdown
    homeassistant ALL=(root) NOPASSWD: /sbin/reboot:

That means that for the user homeassisant in ALL hosts, with the root permissions and without prompt password it can run that commands.

6

Hello all,

Thanks for the great tip regarding how to setup a script to shutdown a RPi from HA. Unfortunately it doesn’t seem to be working for me. I’ve updated the /etc/sudoers file and I can confirm that from the command line I can run sudo for the homeassistant user and I’m not prompted for a password. I’ve also setup the shell_command with sudo shutdown now and a script that calls this. But every time I run this script, I get the following error:

Logger: homeassistant.components.shell_command
Source: /usr/src/homeassistant/homeassistant/components/shell_command/__init__.py:115 
Integration: Shell Command (documentation, issues) 
First occurred: 07:17:39 (1 occurrences) 
Last logged: 07:17:39

Error running command: `sudo shutdown now`, return code: 127
NoneType: None

The main difference I have, which may be different from you all, is that I’m running HA using docker and when I check top it seems to indicate that HA is running under the root user. But if I change the shell_command to use /usr/sbin/shutdown -H instead it still returns the same error as per above. Any suggestions regarding how I can get this working? Many thanks.

7

Just for the record, I ended up following the forum topic here to get it working. In short, as I’m running HA on a docker instance, I needed to ssh into the host machine to run the shutdown command.