Connecting to webpage

[pseddonxvi]

Hi there, I'm trying to set up Garage Zero on my Pi Zero W and I am having issues connecting to the webpage, I can ping the Pi and SSH into it but I get an "ERR_CONNECTION_REFUSED" when trying to access it through a web browser using 192.168.1.142:9001. I did the automatic software install and everything worked fine, any ideas as to what may be causing this?

[nebhead]

What version of the OS are you running on your Pi Zero W?

There might have been some errors during the install that zipped past without seeing them. Since even the supervisor is not responding, that would indicate to me that something didn't quite go right. Before we try to re-install, let me know what OS you are using and we can make sure it's expected to work.

[pseddonxvi]

I am running the Raspberry Pi OS (Legacy) Lite version from 12/05/23

[nebhead]

Probably Raspberry Pi OS Bullseye then. Frankly, it should work just fine, but we can try to repair the install by running some of the commands again.

sudo apt install python3-dev python3-pip python3-rpi.gpio nginx git gunicorn3 supervisor -y

Let me know if you see any errors with this or if the anything appears to actually get installed.

Also, if you could send me the result of the 'pip list' command:

pip list

If Flask is not in the list you just printed out, you may have to run the sudo pip install flask command again.

[pseddonxvi]

I ran both commands, Flask is installed.
"0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded"

[nebhead]

OK, I haven't tested with Flask 3.x yet, so maybe we should bring this back to Flask 2.3.3. To do this, you'll need to run:

sudo pip install flask==2.3.3

Also wanted to ask, when you go to just http://192.168.1.142 in your browser, what do you see?

[pseddonxvi]

Flask 2.3.3 installed successfully. When I visit http://192.168.1.142/ I get a 502 Bad Gateway error and some subtext saying "nginx/1.18.0"

[nebhead]

The 502 Gateway error might be a good thing here. It means that nginx is up and configured properly. It may just mean that the webapp script has crashed for some reason. Maybe because it was using the new version of flask and something isn't compatible. At this point we need to check logs.

First, we need to check to see if supervisor is running at all. I think you said the 9001 port wasn't working either, so maybe we need to check this from the command line.

sudo supervisorctl

This should print out something like this:

control                          RUNNING   pid 468, uptime 33 days, 1:29:44
webapp                           RUNNING   pid 469, uptime 33 days, 1:29:44
supervisor> 

Type quit + enter to exit.

If you see something else, then maybe paste that in your response.

OK, now onto the logs.

Logs should be at /home/pi/garage-zero/logs and we should look for these files:

/home/pi/garage-zero/logs/webapp.err.log
/home/pi/garage-zero/logs/webapp.out.log

So use cat or nano to show us the contents:

cat /home/pi/garage-zero/logs/webapp.err.log
cat /home/pi/garage-zero/logs/webapp.out.log

They might be big so look for relevant error information and copy/paste that into your response.

Thanks!

[pseddonxvi]

The response for the first command was
"unix:///var/run/supervisor.sock no such file"

Neither of the log files appeared to exist either.
"cat: /home/pi/garage-zero/logs/webapp.err.log: No such file or directory"

[nebhead]

OK, looks like supervisor is not running.

Also, please confirm you have a /home/pi/garage-zero folder, just for my sanity.

Double check supervisor is installed:

sudo apt install supervisor

Then if installed:

sudo service supervisor start 

Then let me know what you see.

[pseddonxvi]

There is not a /home/pi/garage-zero folder, this has me pretty confused too.

Supervisor is installed, I ran the start command and it gave no errors.

[nebhead]

There is not a /home/pi/garage-zero folder, this has me pretty confused too.

This is a hint. Something happened with the git clone then, and this is why nothing is running properly.

OK, for fun, let's try the following command and see if it works:

cd ~
git clone https://github.com/nebhead/garage-zero

BTW, is your username 'pi'? For this version of garage-zero, it relies on the base username 'pi' and only works if using that directory.

[pseddonxvi]

Oh shoot! The username is not set to pi, I'd assume that's probably a big part of the issue.

[nebhead]

I think we cracked the case!

So, the solution here would be to re-flash the OS and setup with the user 'pi' instead.

BTW - There is a newer version of the garage-zero software here: https://github.com/nebhead/garage-zero-v2 which does not use the pi user (if that's a problem for you) and installs to a globally accessible directory.

[pseddonxvi]

Thank you so much for the help!