Observium nmap Autodiscover

Automatically scan for devices running SNMP in the same subnet and add them to Observium

Requirements

• Ubuntu Server 16.04
• Observium installed locally

Installation

1. sudo apt update -y
2. sudo apt install -y nmap
3. git clone https://github.com/zeropingheroes/observium-nmap-autodiscover.git && cd observium-nmap-autodiscover

Configuration

Observium

When observium-nmap-autodiscover.sh attempts to add a device to Observium, no SNMP auth details are given. This means they must be set in /opt/observium/config.php so that Observium will try to authenticate with the device using those details.

Documentation: http://docs.observium.org/config_options/#snmp-settings

Example /opt/observium/config.php

<?php

// [... the rest of your Observium config ...]

// SNMPv1 & SNMPv2 communities
$config['snmp']['community'][] = "public";
$config['snmp']['community'][] = "my-secret-community-name-configured-on-my-devices";
$config['snmp']['community'][] = "some-other-community";

// SNMPv3c user #1
$config['snmp']['v3'][0]['authlevel'] = "noAuthNoPriv";
$config['snmp']['v3'][0]['authname'] = "observium";
$config['snmp']['v3'][0]['authpass'] = "";
$config['snmp']['v3'][0]['authalgo'] = "MD5";
$config['snmp']['v3'][0]['cryptopass'] = "";
$config['snmp']['v3'][0]['cryptoalgo'] = "AES";

// SNMPv3c user #2
$config['snmp']['v3'][1]['authlevel'] = "authNoPriv";
$config['snmp']['v3'][1]['authname'] = "vendor";
$config['snmp']['v3'][1]['authpass'] = "supersecret";
$config['snmp']['v3'][1]['authalgo'] = "SHA";
$config['snmp']['v3'][1]['cryptopass'] = "";
$config['snmp']['v3'][1]['cryptoalgo'] = "DES";

observium-nmap-autodiscover.sh

If Observium is installed in a directory other than /opt/observium then run:

export OBSERVIUM_INSTALL_DIR=/your/observium/location

Usage

sudo ./observium-nmap-autodiscover.sh