Pwrstatd

Pwrstatd (commonly known as powerpanel) is an application/service available from CyberPower to monitor their PSUs over USB. It is currently capable of reading the status of only one PSU connected via USB at a time. The powerpanel software is available here: https://www.cyberpowersystems.com/products/software/power-panel-personal/

SNMP Extend

Copy the python script, pwrstatd.py, to the desired host

wget https://github.com/librenms/librenms-agent/raw/master/snmp/pwrstatd.py -O /etc/snmp/pwrstatd.py

Make the script executable
```
chmod +x /etc/snmp/pwrstatd.py
```
Edit your snmpd.conf file and add:
```
extend pwrstatd /etc/snmp/pwrstatd.py
```
(Optional) Create a /etc/snmp/pwrstatd.json file and specify the path to the pwrstat executable [the default path is /sbin/pwrstat]:
```
{
    "pwrstat_cmd": "/sbin/pwrstat"
}
```
Restart snmpd.
```
sudo systemctl restart snmpd
```