Ssh and Raspberry Pi

1

I’ve searched the forum and still not quite finding what I want so I’ll put the question to the experts :slight_smile:

I’m running this -> Ambient TV lights
It works rather well by the way :slight_smile: The problem I have is this:

I run them through home assistant to turn on the TV and lights [ambient light system] but I do not want to just push the button and cold turn it off as it runs off a raspberry pi and I don’t want to just turn it off I’d like to have the pi shut down first then turn off the lights.

The question I have is how can I send the ssh command to an ip address login with user ‘pi’ and password 'raspberry ’ then send this command ‘sudo shutdown -h now’?

Any help would be really appreciated, Thank you all!!

2

if you activate telnet on your raspberry pi you can use this:

and use this instead in the python script

#!/usr/bin/python3
import telnetlib
import time
HOST = "192.168.1.165"
telnet = telnetlib.Telnet(HOST)
telnet.read_until(b":",3)
telnet.write(b"pi\n")
telnet.read_until(b":",3)
telnet.write(b"raspberry\n")
telnet.read_until(b"pi@raspberrypi:",10)
telnet.write(b"sudo shutdown -h now\n")
telnet.read_until(b"pi@raspberrypi:",10)
telnet.write(b"exit\n")
telnet.close()

im using Home Assistant Supervised, so im not sure if/how its working on other installations but its worth a try, good luck

1 Like
3

Telnet :astonished:

To answer the OP, try:
ssh pi@ip_address sudo shutdown -h now

Then give the password and the R Pi will shut down.

1 Like
4

can you automate that so you can run it directly from ha without having to type the password manually?
if so I’m interested too

5

Have you tried this?

6

Yes, Google "passwordless ssh", then pick your preferred web site to explain
how it is done.

Essentially, you will need to log into your HA box, generate a pair of keys
(ssh-keygen) and copy the HA public (.pub) key to your destination box. Neither
box (HA nor destination) will need a reboot.

No passwords are involved.

It is actually fairly simple, despite carrying an aura of geeky trickiness.