RANCID on FreeBSD (howto)

Bruno put together a useful tutorial for setting up RANCID on FreeBSD:

RANCID is an application that allows you to track changes to network devices using a CVS tree. It will email you any changes made at scheduled intervals. You can read more about it here.

I’m going to implement RANCID on a FreeBSD box at work to track changes to my Cisco network devices. I’ve tested these directions on FreeBSD 6.3 and 7.2 and they should work on FreeBSD in general.

From the RANCID website:

RANCID monitors a router’s (or more generally a device’s) configuration, including software and hardware (cards, serial numbers, etc) and uses CVS (Concurrent Version System) or Subversion to maintain history of changes.

RANCID does this by the very simple process summarized here:

  • login to each device in the router table (router.db),
  • run various commands to get the information that will be saved,
  • cook the output; re-format, remove oscillating or incrementing data,
  • email any differences (sample) from the previous collection to a mail list,
  • and finally commit those changes to the revision control system

RANCID also includes looking glass software. It is based on Ed Kern’s looking glass which was once used for http://nitrous.digex.net/, for the old-school folks who remember it. Our version has added functions, supports cisco, juniper, and foundry and uses the login scripts that come with rancid; so it can use telnet or ssh to connect to your devices(s).Rancid currently supports Cisco routers, Juniper routers, Catalyst switches, Foundry switches, Redback NASs, ADC EZT3 muxes, MRTd (and thus likely IRRd), Alteon switches, and HP Procurve switches and a host of others.

Full howto here

Thanks Bruno for letting me know about your post.

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