Configure Net-SNMP for *nix devices

Install and Setup Net-SNMP for basic SNMP monitoring on Linux Unix and Raspberry Pi systems.

PURPOSE: Setup Net-SNMP to monitor status, CPU, memory and volumes such as /, /etc/ and other directories. This configuration will also allow to monitor processes running on the systems.

This is a basic configuration. Additional security such as locking to specific IPs and SNMPv3 is recommended.

1. Start by updating the system, then installing snmpd

  sudo apt-get update

sudo apt-get install snmpd 

Modify the snmpd.conf file to setup the configuration to monitor your system from across the network.  The configuration below allows anyone to read the SNMP data - you may want a more secure configuration.  These are the barebones needed to start monitoring right away via SNMPv2:

1. Open the snmpd.conf in your favorite editor

sudo nano /etc/snmp/snmpd.conf

1. Change IP Binding
   1. Change the agentAddress from:

  agentAddress udp:127.0.0.1:161 

1. Bind to all IP Addresses:

agentAddress 161

1. Or to a specific IP:

  agentAddress udp:127.0.0.1:161,udp:192.168.1.2:161 

1. Modify and set a Community String line:

rocommunity public

(without the initial #)

1. Restart the SNMP deamon:

sudo /etc/init.d/snmpd restart