netbox-scanner

A scanner util for NetBox, because certain networks can be updated automagically. netbox-scanner aims to create, update, and delete hosts (/32) in NetBox, either discovered after network probes and imported from CSV files.

Installation

netbox-scanner is available as a Python package via PyPi, so you can install it using pip:

$ pip3 install netbox-scanner

You can also download from GitHub:

$ wget https://github.com/forkd/netbox-scanner/archive/master.zip
$ unzip netbox-scanner-master.zip -d netbox-scanner
$ cd netbox-scanner
$ pip install -r requirements.txt
$ python netbox-scanner/nbscanner

Note that netbox-scanner will require Nmap and an instance of NetBox ready to use.

Scanning the Network

To use netbox-scanner as a script, simply run netbox-scanner/nbscanner and it'll create its configuration file (.netbox-scanner.conf) in your home folder:

$ python nbscanner

After that, you'll just need to edit that file with your environment settings and run the script again, and netbox-scanner will do the following tasks:

It will scan all networks defined in the configuration file.
For each discovered host it will:
1. If it is in NetBox, description is different, and tag is equal to that defined in the configuration file, description will be updated in NetBox.
2. If host is not in NetBox, it'll be created.
The script will iterate through each network to find and delete any hosts registered in NetBox that did not respond to scan, and have the tag defined in the configuration file.

For instance, if some hosts in your monitored networks are eventually down, but you don't want netbox-scanner to manage them, just make sure that they don't have the tag defined in the configuration file.

Of course, you can use cron to automatically run nbscanner.

Configuration File

netbox-scanner have a configuration file with all parameters needed to scan networks and synchronize them to NetBox. By default, this file is located at user's home folder and is created when nbscanner is executed for the first time. Before using nbscanner you should edit that file and fill all variables according to your environment.

Importing from CSV File

netbox-scanner can import data from CSV files in the following format:

IP Address,Description
10.0.0.1,Gateway
10.0.0.2,NTP Server
...

Note that the first line is header, IP addresses aren't in CIDR notation (a /32 will be appended to all addresses automatically) and commas aren't accepted in description. You can import this file using the --csv parameter, like this:

$ nbscanner --csv netbox.csv

License