[rancid] Re: Nexus expect looping

[Dan_Mitton at YMP.GOV]

Ok, some more info I just discovered...

Our whole configuration is 3 Nexus and about 20 misc. other Cisco IOS and 
CatOS switches/routers.  Everything seems to be working except 1 of the 
Nexus servers.  It is running a slightly old version of its software then 
the other 2...

Broken:

Software
  BIOS:      version 1.2.0
  loader:    version N/A
  kickstart: version 4.0(1a)N2(1)
  system:    version 4.0(1a)N2(1)
  BIOS compile time:       06/19/08
  kickstart image file is: bootflash:/n5000-uk9-kickstart.4.0.1a.N2.1.bin
  kickstart compile time:  2/25/2009 0:00:00 [02/25/2009 08:29:12]
  system image file is:    bootflash:/n5000-uk9.4.0.1a.N2.1.bin
  system compile time:     2/25/2009 0:00:00 [02/25/2009 08:56:57]

Working:

Software
  BIOS:      version 1.2.0
  loader:    version N/A
  kickstart: version 4.1(3)N1(1)
  system:    version 4.1(3)N1(1)
  BIOS compile time:       06/19/08
  kickstart image file is: bootflash:/n5000-uk9-kickstart.4.1.3.N1.1.bin
  kickstart compile time:  7/23/2009 17:00:00 [07/24/2009 00:53:59]
  system image file is:    bootflash:/n5000-uk9.4.1.3.N1.1.bin
  system compile time:     7/23/2009 17:00:00 [07/24/2009 01:42:52]

Doing 'top' on the machine, I see 'expect' doing its normal thing for a 
while and then waiting (for a long time), before looping to 100% cpu.

I added some debugging lines to nxrancid, to print out the $linecnt and $_ 
and found...

        linecnt = 57, [vlan 200
]
        linecnt = 58, [  name dan-test
]
        linecnt = 59, [
]
        linecnt = 60, [Error: TIMEOUT reached
]
        linecnt = 61, [Hangup
]

The 'Hangup' is (I assume) from me 'kill -HUP <pid>' the expect process. 
If I resize my terminal window from 60 lines, down to 50 lines, I then 
get...

        linecnt = 48, [tacacs-server directed-request
]
        linecnt = 49, [
]
        linecnt = 50, [Error: TIMEOUT reached
]
        linecnt = 51, [Hangup
]

So it seems like the 'pager' is involved some how.







To:     Dan_Mitton at YMP.GOV
cc:     john heasley <heas at shrubbery.net>, rancid-discuss at shrubbery.net 
Subject:        Re: [rancid] Nexus expect looping
LSN: Not Relevant - Not Privileged
User Filed as: Excl/AdminMgmt-14-4/QA:N/A

Tue, Oct 06, 2009 at 12:45:46PM -0700, Dan_Mitton at YMP.GOV:
> pkg_info shows me the same version of expect, but a newer version of 
> tcl...
> 
> pkg_info | egrep "expect|tcl"
> expect-5.43.0_3     A sophisticated scripter based on tcl/tk
> tcl-8.4.19_3,1      Tool Command Language
> 
> Do you think I should go back to the older version of tcl?

Please try it; I dont use fbsd regularly, but I know the combination
below is working.

> Dan
> 
> 
> 
> 
> To:     Dan_Mitton at YMP.GOV
> cc:     rancid-discuss at shrubbery.net 
> Subject:        Re: [rancid] Nexus expect looping
> LSN: Not Relevant - Not Privileged
> User Filed as: Excl/AdminMgmt-14-4/QA:N/A
> 
> Tue, Oct 06, 2009 at 10:28:01AM -0700, Dan_Mitton at YMP.GOV:
> > John,
> > 
> > Thanks for your reply.  I'm running FreeBSD 7.2:
> > 
> > FreeBSD host.ymp.gov 7.2-RELEASE FreeBSD 7.2-RELEASE #0: Fri May  1 
> > 07:18:07 UTC 2009 
> > root at driscoll.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  amd64
> > 
> > expect verion:
> > 
> > expect version 5.43.0
> 
> Its most likely your expect/tcl set.  A friend (and others) has had
> this problem a few times.  He recently updated his ports and the set
> of tcl/expect that he got with that update has been working.  pkginfo
> on that host gives me:
> 
> expect-5.43.0_3     A sophisticated scripter based on tcl/tk
> tcl-8.3.5_8         Tool Command Language
> 
> > 
> > 
> > 
> > To:     Dan_Mitton at YMP.GOV
> > cc:     rancid-discuss at shrubbery.net 
> > Subject:        Re: [rancid]  Nexus expect looping
> > LSN: Not Relevant - Not Privileged
> > User Filed as: Excl/AdminMgmt-14-4/QA:N/A
> > 
> > Tue, Oct 06, 2009 at 10:01:23AM -0700, Dan_Mitton at YMP.GOV:
> > > I am trying to get Rancid to scan a Cisco Nexus 5000, but I'm having 

> > > problems.
> > > 
> > > First, it tried to run the command 'show version build-info all', 
> which 
> > > doesn't exist, so I commented it out of the nxrancid file.
> > 
> > that should not be necessary, it should just skip it.
> > 
> > > Second, it seems to get most of the way through (I think), but then 
> the 
> > > expect process goes to 100% CPU until it is killed.
> > > 
> > > The Nexus 5000 is running:
> > > 
> > > Software
> > >   BIOS:      version 1.2.0
> > >   loader:    version N/A
> > >   kickstart: version 4.1(3)N1(1)
> > >   system:    version 4.1(3)N1(1)
> > >   BIOS compile time:       06/19/08
> > >   kickstart image file is: 
> bootflash:/n5000-uk9-kickstart.4.1.3.N1.1.bin
> > >   kickstart compile time:  7/23/2009 17:00:00 [07/24/2009 00:53:59]
> > >   system image file is:    bootflash:/n5000-uk9.4.1.3.N1.1.bin
> > >   system compile time:     7/23/2009 17:00:00 [07/24/2009 01:42:52]
> > > 
> > > and has 1 - 2148 hung off of it.
> > > 
> > > Any ideas??
> > 
> > Most like its expect on you O/S.  What OS and expect version?  did you
> > look at the o/s section on the rancid web page.
> > 
> > 
> 
> 


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