Re: cisco_interface.monitor

[Peter Holzleitner]

Only a Windows install would be "hosed" if a module were missing ;-)
Just install manually:

- Make sure you have a working GCC and development packages, in 
particular net-snmp-devel
- Make sure you have the perl CPAN module (RPM from your distro)
- run
    perl -MCPAN -e shell
    cpan> install Net::SNMP

MRTG uses its own (limited) SNMP implementation, BTW.

And one more - take a look at snmpvar.monitor, which can check interface 
status (example provided in sample config files) as well as lots of 
other variables.  (Disclaimer - I wrote that monitor.)

--Peter


OK, I think my centos install must be hosed.  When I run the command that you suggested, I get a blank line. Not that it can't find the module, just a 
blank line.

The weird thing is that I have installed the RPMs from the centos site (net-snmp-utils-5.1.2-11.EL4.6.i386.rpm, net-snmp-perl-5.1.2-11.EL4.6.i386.rpm, 
net-snmp-libs-5.1.2-11.EL4.6.i386.rpm, net-snmp-devel-5.1.2-11.EL4.6.i386.rpm, and net-snmp-5.1.2-11.EL4.6.i386.rpm) and still it doesn't work...

uname -a
Linux mrtg.ndtel.com 2.6.9-34.0.1.ELsmp #1 SMP Wed May 24 08:14:29 CDT 2006 
i686 athlon i386 GNU/Linux

cat /etc/redhat-release
CentOS release 4.3 (Final)

I am running an older version of centos, but these scripts are much older than my release, so if they work on centos 5x they sure should work on 
centos 4.x.  I am starting to feel that the Perl stuff on my server is not finding all of the software installed; is there an easy way to tell Perl to 
search and catalog all the software on the system?  I know that some of the SNMP software is working, as we are running MRTG on the same server and it 
is  having no difficulty talking to the routers, but that may come with the MRTG software, I can't remember.

Thanks for the help!


Jim Trocki wrote:
  
On Thu, 27 Dec 2007, Alex Moen wrote:

    
It was in the contribs area... Copyright (C) 1998, Brian Moore 
<[EMAIL PROTECTED]>, modified July 2000 by Ed Ravin <[EMAIL PROTECTED]>
      
Oh, well then that looks the same as the snmp_interface.monitor in the 
contrib.
Maybe someone renamed it at some point on your end or maybe elsewhere, 
but I've
never seen it called that.

Anyway, you said "snmpvar.monitor also exhibits this behavior", so I 
just tried
it on stock CentOS 5 and Fedora Core 6 installations I have in front of me
here, and it worked properly.  I also tried the snmp_interface.monitor 
and I
didn't see the error you reported about it not finding SNMP::Session. I 
also
recall testing the snmpvar.monitor which ships with mon-1.2.0 (obtained 
from
the contrib repository anyway) on a SLES 10 installation this summer and 
it was
fine.

Here's the version of the perl module from centos/rhel5:

Name        : net-snmp-perl                Relocations: (not relocatable)
Version     : 5.3.1                             Vendor: CentOS
Release     : 19.el5_1.3                    Build Date: Tue 18 Dec 2007 
06:47:56 PM EST

What's yours? You could find out this way as well:

$ perl -MSNMP -e 'print $SNMP::VERSION, "\n"'
5.0301

Be sure to use the same path to perl as the one the script is using.
    

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