trouble opening run/lighttpd [fixed], trouble loading http://IP:81 [fixed]

[dewbobdewbob]

When I get to the step sudo chown -R $USER:$USER /var/run/lighttpd, i get the message "chown: cannot access '/var/run/lighttpd': No such file or directory".

What am I doing wrong?

[dewbobdewbob]

@sn4k3

[sn4k3]

lighttpd may change location on newer systems. try to find it location: whereis lighttpd

[dewbobdewbob]

When I do that, I get lighttpd: /usr/sbin/lighttpd /usr/lib/lighttpd /etc/lighttpd /usr/share/lighttpd /usr/share/man/man8/lighttpd.8.gz

What am i supposed to do with that info? None of them say "run". Sorry, I'm a noob at coding.

[dewbobdewbob]

Basically, what I'm trying to troubleshoot is, I cannot get the sensor to read data on Octopi. At some point, I was able to load the frontend onto Octopi, but now nothing shows.

[sn4k3]

When I do that, I get lighttpd: /usr/sbin/lighttpd /usr/lib/lighttpd /etc/lighttpd /usr/share/lighttpd /usr/share/man/man8/lighttpd.8.gz
What am i supposed to do with that info? None of them say "run". Sorry, I'm a noob at coding.

You need to use those path's instead of the old /var/run, newer systems may use different path for lighttpd, I will check latter and get back to you

[dewbobdewbob]

I redownloaded Octopi and started going through your installation instruction for SDS011 Frontend again, this time it didn't throw a fuss about sudo chown -R $USER:$USER /var/run/lighttpd, so it seems like that issue went away.
But now, I am getting a message that says: Run "service lighttpd force-reload" to enable changes

When I type service lighttpd force-reload, I get this:

I am wondering if the error messages I am getting for python3 /var/www/html/scripts/aqi3.py debug is the reason why my SDS011 readings won't show up on my Octoprint SDS011 tab.

[dewbobdewbob]

Actually, python3 /var/www/html/scripts/aqi3.py debug works now for me, i went and changed my serial port from the default /dev/ttyUSB0 to /dev/ttyUSB1

I was also able to get service lighttpd force-reload to work be typing it in again.

But, I still can't get it to show up on my SDS011 tab on Octoprint

[gstrauss]

When I get to the step sudo chown -R $USER:$USER /var/run/lighttpd, i get the message "chown: cannot access '/var/run/lighttpd': No such file or directory".

No such file or directory means exactly that; the path does not exist.
Maybe a startup script needs to mkdir -p /var/run/lighttpd each time at startup, before attempting the chown.
Maybe, on newer systems /run/lighttpd should be used instead of /var/run/lighttpd.

[dewbobdewbob]

@gstrauss I was able to get /var/run/lighttpd after I downloaded Octopi.

Because of that, I was able to get python3 /var/www/html/scripts/aqi3.py debug working as well.

Now my current problem is that I cannot get the HTTP server to work (the SDS011 tab on Octopi).

[dewbobdewbob]

Oh wow, i got the HTTP server to work finally as well. I just made sure that all the www-data were changed to pi, not just the ones that were specified in the installation steps.

[sn4k3]

Adding pi to www-data is part of the script: sudo usermod -a -G $USER www-data