[rancid] Nexus 7k & bootvar_debug churn

Charles T. Brooks Charles.Brooks at hbcs.org
Wed May 24 14:00:28 UTC 2017

I can confirm this behavior on the Nexus 5000 as well.


From: Rancid-discuss [rancid-discuss-bounces at shrubbery.net] on behalf of Vinny.Abello at nttdata.com [Vinny.Abello at nttdata.com]
Sent: Wednesday, May 24, 2017 9:32 AM
To: rancid-discuss at shrubbery.net
Subject: [rancid] Nexus 7k & bootvar_debug churn


We have several Nexus 7009 switches running NX-OS 7.2. We’ve noticed that RANCID keeps picking up updates to the files bootvar_debug.log and bootvar_debug.meta. There doesn’t appear to be any way to stop these files from being modified. I found another user who saw the same behavior on Nexus 9000 series switches. Cisco states it is by design. It’s worth noting that this behavior doesn’t seem to happen in version 6.2 of NX-OS on the same platform. We’ve only noticed it on 7.2.

It would seem these files need to be ignored. Does anyone have a patch to correct this for RANCID 3.6.2?

Here’s an example of the diff from what rancid is picking up.

Index: configs/cs5.wtc.qcy


retrieving revision 1.337

diff -u -4 -r1.337 cs5.wtc.qcy

@@ -229,10 +229,10 @@

  !Flash: bootflash:  1054 MB used

  !Flash: bootflash:   637 MB free

  !Flash: bootflash:  1692 MB total


- !Flash: debug:      249932    May 24 04:12:52 2017  bootvar_debug.log

- !Flash: debug:           6    May 24 04:12:52 2017  bootvar_debug.meta

+ !Flash: debug:      250049    May 24 05:13:03 2017  bootvar_debug.log

+ !Flash: debug:           6    May 24 05:13:03 2017  bootvar_debug.meta

  !Flash: debug: Usage for debug://sup-local

  !Flash: debug:      0 MB used

  !Flash: debug:     4 MB free

  !Flash: debug:     5 MB total



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