usg-pro-snmp-temp: Add temperature data to SNMP

A trivial patch that allows temperature data of the USG-PRO-4 to be reported inside SNMP. This is the initial version, written on 10/02/2017. Involves manual modifications of your USG-PRO.

Installation guide

Prerequisites

• IP/Hostname of your USG-PRO ($USG-PRO)
• User to log into the USG-PRO ($USERNAME)

Procedure

1. Clone this GIT

2. Copy the shell scripts cpuTemp and phyTemp to your USG-PRO

    $ scp cpuTemp phyTemp $USERNAME@$USG-PRO
   

3. Log into the USG-PRO by ssh and become root

    $ ssh $USERNAME@$USG-PRO
    $ sudo -s
   

4. Move the required shell scripts to /usr/local/bin

    $ mv ~$USERNAME/cpuTemp /usr/local/bin
    $ mv ~$USERNAME/phyTemp /usr/local/bin
    $ chown root:root /usr/local/bin/cpuTemp
    $ chown root:root /usr/local/bin/phyTemp
    $ chmod 755 /usr/local/bin/cpuTemp
    $ chmod 755 /usr/local/bin/phyTemp
   

5. Allow user snmp to fetch temperature data using ubnt-hal by adding the following line to /etc/sudoers

    $ echo "snmp     ALL = NOPASSWD: /usr/sbin/ubnt-hal" >> /etc/sudoers
   

6. Configure SNMPD to fetch temperature data

    $ echo "pass .1.3.6.1.4.1.4413.1.1.43.1.8.1.5.1.0 /usr/local/bin/cpuTemp" >> /etc/snmp/snmpd.conf
    $ echo "pass .1.3.6.1.4.1.4413.1.1.43.1.8.1.5.1.1 /usr/local/bin/phyTemp" >> /etc/snmp/snmpd.conf
   

7. Restart SNMPD

    $ pkill -HUP snmpd
   

Testing

Use your favorite SNMP browser to test the new OIDs.

• OID .1.3.6.1.4.1.4413.1.1.43.1.8.1.5.1.0 should contain the cpu temperature
• OID .1.3.6.1.4.1.4413.1.1.43.1.8.1.5.1.1 should contain the physical temperature (chassis?)