Dan Langille's Other Diary
He has another, more popular, diary. This one is more general.
LibreNMS
Eaton ePDU Auth Algorithm & Crypto Algorithm for SNMPv3 Configuration
Recalibrating an APC UPS
upgrading to LibreNMS 1.53.1
Configuring LibreNMS Nginx statistics
Smart quotes are not so smart: net-snmp-config –create-snmpv3-user for LibreNMS