[Nagiosplug-help] check_iftraffic.pl - problem (Use of uninitialized value in scalar chomp)

[bobi at netshel.net]

The problem is that Nagios only takes the first line of output from any
plugin and throws the rest away.  so you have to get rid of your Perl
error.

I think the problem on line 185 is that you're not chomping your $row
variable - you're actually chomping the "default" $_ variable.

So, I'd change line 185 to read:

chomp($row);

Hopefully, that fixes it.

Bob

> Hi!
>
>
>
> I need help to make this work.
>
> I will try to be clear as possible.
>
>
>
> I am running the Nagios in a FreeBSD 6.1
>
> Web Interface is fully operational and monitoring several hosts.
>
> In the CLI, (/usr/local/libexec/nagios/check_iftraffic.pl) when
>  I input the command to get the values from the router interface, I get
the following error: "Use of uninitialized value in scalar chomp at
./check_iftraffic.pl line 185, <FILE> line 1."
>
>
>
> Here's the input/output commands:
>
>
>
> Input:
>
> ./check_iftraffic -H 172.16.17.10 -C public -i Serial0/0/0 -b 2048
>  -u k -w 85 -c 98 -M 2048
>
>
>
> Output:
>
> Use of uninitialized value in scalar chomp at ./check_iftraffic
>  line 185, <FILE> line 1.
>
> Total RX Bytes: 181.49 MB, Total TX Bytes: 182.37 MB<br>Average
>  Traffic: 1.34 kB/s (0.5%) in, 1.39 kB/s (0.5%) out| inUsage=0.5,85,98
outUsage=0.5,85,98 inAbsolut=185491 outAbsolut=186377
>
>
>
> Well, as you can see, the plug-in returns a valid response, but
>  in the Nagios Web View, the only thing that appears to me is the first
line (Use of uninitialized value in scalar chomp at ./check_iftraf
> fic line 185, <FILE> line 1.).
>
> I don't know how to get rid of this error.
>
>
>
> I already tried to check the line 185 of the check_iftraffic.pl,
>  but i can't find any errors. Here's the lines:
>
>
>
> ##################################################################
>
>     170 my $row;
>
>     171 my $last_check_time = time - 1;
>
>     172 my $last_in_bytes   = $in_bytes;
>
>     173 my $last_out_bytes  = $out_bytes;
>
>     174
>
>     175 if (
>
>     176         open( FILE,
>
>     177                 "<" . $TRAFFIC_FILE . "_if" . $iface_number
>  . "_" . $host_address
>
>     178         )
>
>     179   )
>
>     180 {
>
>     181         while ( $row = <FILE> ) {
>
>     182
>
>     183                 #cosmetic change 20050416 by mw
>
>     184                 #Couldn't sustain;-)
>
>     185                 chomp();
>
>     186                 ( $last_check_time, $last_in_bytes, $last_out_byt
> es ) =
>
>     187                   split( ":", $row );
>
>     188         }
>
>     189         close(FILE);
>
>     190 }
>
> ##################################################################
>
>
>
> I would apreciate any sugestions.
>
> Thanks in advance!
>
>
>
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