Instructions:

• [] On Raspberry Pi setup Raspbian OS Lite is sufficient.
• [] Install nginx, php-fpm, fail2ban, supervisor, python3, python-requests, webalizer
• [] Configure nginx site to run DUIGCO API
• [] Copy urandomapi.php to site and check with /urandomapi.php?api
• [] Copy entropy.py and externalentropy.py to ~/.distributedurandom/ and sudo chmod -R +x ~/.distributedurandom/
• [] Confirm each script runs from the command line after editing to enable Debug = True run entropy.py
• [] Edit the scripts to set Debug to False
• [] Configure supervisor to run each script so that they run when the Raspberry Pi turns on. Supervisor config files go in /etc/supervisor/conf.d/
• [] Confirm everything is operating correctly
• [] Notify the DUIGCO API project so that your API URL can be included in the load balance to contribute to this global project
• [] If also gathering entropy from the Hard Disk light on an external computer you will need to run externalentropy.py using supervisor.
• [] If the Hard Disk light on a seperate computer is another Raspberry Pi you can configure the HDD light output to operate some pins there. On the seperate Raspberry Pi edit /boot/config.txt and insert line dtparam=act_led_gpio=18^[1] checking there are no conflicts. Does not seem to work with every GPIO but might work with others eg. try GPIO 18-21 then watching to correctly connect GND at both ends bridge to pins 12 & 14 (GPIO 18) to 20 & 22 (GPIO 25) on the Raspberry Pi running the DUIGCO API

You can bypass the traditional requirements of hosting to have port forwarding and static IP addressed by using ARGO Tunnel from CloudFlare

This resides on you local FAMP / Pi 4 nginx server with PHP
Locate correctly at /urandomapi.php to provide a public URL for access eg. myserver.dyndns.org/urandomapi.php
Notify the project so your server can be added to the DUIGCO API pool api.duigco.org

Setup requires pip install requests if not installed.
chmod +x ./entropy.py to allow execution
CTRL + C twice to exit

Collects entropy from an external source i.e. the HDD light on a seperate computer (esp. the one not the API is running on) Setup requires pip install requests if not installed.
chmod +x ./entropy.py to allow execution
CTRL + C twice to exit

rel:
[1] Act Led GPIO - How can I extend Act Led via gpio on B+ Raspbian?