Restart a python script automatically

General Discussion
1

Hi

I am quite new to python although have been using dietpi to run pihole for ages.
I have some scripts I have been able to get hold of to scrape the data from a solar logger. These scripts for some reason sometimes fail and then just end themselves. Is there a way of making this script restart if it fails?

I have managed to add it to the autostart function so it loads with the pi already.

any helpwould be apprecitaed

2

Hi, you can use supervisord. It can start your python script at startup and restart if it close for a problem.
BR

3

This would require Home Assistent to be installed. Isn’t it. And I’m not sure the OP already have.

4

NO.

But it’s the same on DietPi.

5

supervisord is a process control system, independent of Home Assistant, just used as well by Home Assistant (supervised edition, or probably not even that?) or am I missing context? However, instead of installing another process control system, systemd could be used as well:

cat << '_EOF_' > /etc/systemd/system/mypython.service
[Unit]
Description=My Python script

[Service]
ExecStart=/usr/bin/python3 /path/to/my/script.py
Restart=always

[Install]
WantedBy=multi-user.target
_EOF_

systemctl daemon-reload
systemctl enable --now mypython
systemctl status mypython
1 Like
6

Hi folks

Thanks for the input.

I do indeed run homeassistant but that runs on its own VM in virtual box on windows.

I have a dietpi install for pihole and solismon3 which I have just managed to get sorted out. It’s the solismon3 script that every now and again decides it wants to quit.
Iv got around it b ly setting it to autorun and some keepalive setting

And then I have a second lighter dietpi install as a mosquitto broker.

7

This is kind of how I have done it…set it as a service and then told it to autorestart.

Thanks for the input.