Configuration on Proxmox

Install snmpd

apt install snmpd

Configure snmpd

Paste content from snmpd.conf to /etc/snmp/snmpd.conf

nano /etc/snmp/snmpd.conf

Paste content from sh file to /opt folder and make executable

nano /opt/snmp-cpu-temp.sh
chmod +x /opt/snmp-cpu-temp.sh

Run snmpd as root, because debian added the user "Debian-snmp" to the snmp.service but for SMART/LVM Status we need to be root.

edit snmpd.service and replace "Debian-snmp" with "root"

nano /lib/systemd/system/snmpd.service

From

...
ExecStart=/usr/sbin/snmpd -Lsd -Lf /dev/null -u Debian-snmp -g Debian-snmp -I -smux,mteTrigger,mteTriggerConf -f -p /run/snmpd.pid
...

To

...
ExecStart=/usr/sbin/snmpd -Lsd -Lf /dev/null -u root -g Debian-snmp -I -smux,mteTrigger,mteTriggerConf -f -p /run/snmpd.pid
...

Restart SNMPD

systemctl restart snmpd.service

Configuration on PRTG WebUI

CPU temperature

• Add sensor
• SNMP Custom
• Name = CPU Temp
• OID = .1.3.6.1.2.1.25.1.8
• Channel Name = Temperature
• Unit String = °C

LVM used

• Add sensor
• SNMP Custom
• Name = LVM allocated pool data
• OID = .1.3.6.1.2.1.25.1.9
• Channel Name = LVM used
• Unit String = %

SMART status

• Add sensor
• SNMP Custom String
• Name = SMART status
• OID = .1.3.6.1.2.1.25.1.10
• Response Must Include (Down Status) = PASSED
• Response Must Include (Warning Status) = PASSED