[rancid] Rancid Diff Noise

[d***@verizon.com]

Hello!
We have been happily using Rancid for the past 3 years and love
it! I just upgraded our system to rancid-2.3.2a7 and it went smoothly.
However, our diffs for the Juniper ERX-1440 are "noisy". We are getting
two categories of changes that we would like to ignore. The first is the
disk bytes counts reported by DirSlotN. It changes everyday, I suspect due
to our provisioning changes. The second is mpls ldp passwords are
"randomly" encrypted on the fly so they appear different each time. I have
an example below:


RCS file: /usr/local/rancid/CVS/washdc/configs/washdc-rtr-03,v
retrieving revision 1.340
retrieving revision 1.341
diff -u -p -r1.340 -r1.341
--- washdc/configs/washdc-rtr-03 2008/04/02 13:09:45 1.340
+++ washdc/configs/washdc-rtr-03 2008/04/03 12:09:03 1.341
@@ -255,8 +255,8 @@
!Flash: -------------
!Flash: Device (bytes) (bytes) (bytes)
!Flash: -------------- ---------- --------- --------
-!Flash: disk0: 1025482752 282328652 68157440
-!Flash: standby-disk0: 1025482752 282314384 68157440
+!Flash: disk0: 1025482752 282344524 68157440
+!Flash: standby-disk0: 1025482752 282330256 68157440
!
! serial assembly assembly ram
!slot type number number rev. (MB)
@@ -1701,8 +1701,8 @@ mpls ldp targeted-hello receive list 130
mpls ldp targeted-hello send list 130.81.100.2
mpls ldp targeted-hello receive list 130.81.100.2
!
-mpls ldp neighbor 130.81.100.1 password 8 BZ<yYKJE9S
-mpls ldp neighbor 130.81.100.2 password 8 BZ<yYK1E9S
+mpls ldp neighbor 130.81.100.1 password 8 KnT%U(fm7S
+mpls ldp neighbor 130.81.100.2 password 8 7ZfaZ#^r%S
!
mpls ldp interface profile default
mpls


Is there a way we can ignore these changes?


In a similar situation, we are working with CRS-1s and are seeing daily
diffs for insignificant changes as shown below:

Use of tainted arguments in exec is deprecated at
/usr/local/apache/cgi-bin/cvsweb.cgi line 2043.
===================================================================
RCS file: /usr/local/rancid/CVS/tampfl/configs/tampfl-rtr-31,v
retrieving revision 1.14
retrieving revision 1.15
diff -u -p -r1.14 -r1.15
--- tampfl/configs/tampfl-rtr-31 2008/04/18 19:36:12 1.14
+++ tampfl/configs/tampfl-rtr-31 2008/04/19 19:20:36 1.15
@@ -198,9 +198,9 @@
!
!Flash: bootflash: Directory of bootflash:
!Flash: bootflash: 7864322 -rw- 1224 Sun Dec 30 12:40:18 2007
temp_hist
-!Flash: bootflash: 7864324 -rw- 29234 Sun Dec 30 12:40:18 2007
temp_cont
+!Flash: bootflash: 7864324 -rw- 35420 Sun Dec 30 12:40:18 2007
temp_cont
!Flash: bootflash: 7864328 -rw- 1544 Sun Dec 30 12:42:06 2007
uptime_hist
-!Flash: bootflash: 7864330 -rw- 63000 Sun Dec 30 12:42:06 2007
uptime_cont
+!Flash: bootflash: 7864330 -rw- 63768 Sun Dec 30 12:42:06 2007
uptime_cont
!Flash: bootflash: 15597570 -rw- 0 Sun Dec 30 13:12:12 2007
mbi_image
!Flash: bootflash: 15597572 -rw- 28 Sun Dec 30 13:13:31 2007
env_static_data
!Flash: bootflash: 15597576 -rw- 32 Sun Dec 30 13:14:31 2007
uptime_static_data

I could attempt to drag out my Perl books and fix these locally, but
someone out there might have a better fix that we could all share.


Thanks!
Dave


___________________________________________________________
David A. Mack [phone] (W)
CCIE #6963 CISSP JNCIS SnortCP [phone] (C)
email: ***@verizon.com
___________________________________________________________
"For Those About to Route, We Salute You!"