[rancid] Juniper CLI prompts out of sync causing frequent changes

[heasley]

Fri, Jul 27, 2018 at 08:18:08AM -0500, Chris Wopat:
> Hi folks,
> 
> Last year I commented on an issue we're seeing across many Juniper devices.
> I neglected to follow up on Heasley's response then but are seeing it a lot
> more frequently now, perhaps related to some OS upgrades or something else.
> 
> 
> Thread was here:
> 
> http://www.shrubbery.net/pipermail/rancid-discuss/2017-October/009916.html
> http://www.shrubbery.net/pipermail/rancid-discuss/2017-October/009922.html
> 
> Looking at the last week or so of these we've had, they're on devices
> running 14.1X53-D4*, which is primaraily QFX5100 but also a few EX4200.
> 
> Here's output from a single diff, its like this on various commands nearly
> every run:
> 
> 
> 
> Index: configs/r-kettlemoraine-hub
> ===================================================================
> retrieving revision 1.144
> diff -u -4 -r1.144 r-kettlemoraine-hub
> @@ -1,7 +1,8 @@
>   #RANCID-CONTENT-TYPE: juniper
>   #
>   # r-kettlemoraine-hub> show chassis clocks
> + # show chassis environment
>   # r-kettlemoraine-hub> show chassis environment
>   # Class Item                           Status
>   # Power FPC 0 Power Supply 0           OK
>   #       FPC 0 Power Supply 1           OK
> Index: configs/r-lacrossecity-hub
> ===================================================================
> retrieving revision 1.108
> diff -u -4 -r1.108 r-lacrossecity-hub
> @@ -15,9 +15,8 @@
>   #       FPC 0 Fan 2                    OK
>   #       FPC 0 Fan 3                    OK
>   #
>   # r-lacrossecity-hub> show chassis firmware
> - # show chassis fpc detail
>   # Part                     Type       Version
>   # FPC 0                    uboot      U-Boot 1.1.6 (Jun  5 2012 -
> 02:24:53) 1.0.0
>   #                          loader     FreeBSD/PowerPC U-Boot bootstrap
> loader 2.4
>   #
> Index: configs/r-platteville-hub
> ===================================================================
> retrieving revision 1.274
> diff -u -4 -r1.274 r-platteville-hub
> @@ -1,7 +1,8 @@
>   #RANCID-CONTENT-TYPE: juniper
>   #
>   # r-platteville-hub> show chassis clocks
> + # show chassis environment
>   # r-platteville-hub> show chassis environment
>   # Class Item                           Status
>   # Power FPC 0 Power Supply 0           OK
>   #       FPC 0 Power Supply 1           OK
> 
> Heasley, you chimed in saying the prompt may be out of sync. While I don't
> quite know what that means, you suggested sending output of:
> 
> eval `rancid -Ct juniper device`
> 
> Here that is, finally:
> 
> jlogin -t 120 -c 'show chassis clocks;show chassis environment;show chassis
> firmware;show chassis fpc detail;show chassis hardware detail;show chassis
> hardware models;show chassis routing-engine;show chassis scb;show chassis
> sfm detail;show chassis ssb;show chassis feb detail;show chassis feb;show
> chassis cfeb;show chassis alarms;show system license;show system
> boot-messages;show system core-dumps;show version detail;show version
> invoke-on other-routing-engine;show configuration;file checksum md5
> /var/db/scripts/*/*;file list recursive /var/db/scripts/' r-platteville-hub
> 
> You may notice some additions at the end which help us track some slax
> scripts:
> 
> file checksum md5 /var/db/scripts/*/*;file list recursive /var/db/scripts/'
> 
> we've had those in place for quite some time (before this) so I'm unsure if
> those are related.

not likely.  I presume you have a banner with something that looks like a
prompt; like https://www.juniper.net/documentation/software/junos/junos93/swconfig-system-basics/configuring-a-system-login-message.html.
if not, you'll have to share output with me.

eval `rancid -t juniper -C hostname` &> output