[mrtg] Re: minus one as a value

[Bob Van Cleef]

Just a followup:  Found this in e-mail from cron:


WARNING: Could not get any data from external command
'/s1/mrtg/tools/dotelnet.sh caddy 1986'
Maybe the external command did not even start. (Illegal seek)

I have found no obvious reasons why the script fails under CRON,
but works manually.   All paths are called out fully.

#!/bin/bash

if ! /usr/local/bin/nc -w 2 $1 $2 2>/dev/null ; then echo -e "0\n0\n`if !
/usr/local/bin/nc -w 1 $1 13 ; then echo \"Remote machine down?\" ;
fi`\nAn error occurred getting this statistic." ; fi | /usr/bin/head -n 4

[note: all one line in actual script]

Bob

On Thu, 28 Jun 2001, Bob Van Cleef wrote:

>
>
> I'm trying to track vmstat stuff on a solaris box.  When I run mrtg
> manually, I always get the correct values.  However, when run out of cron
> (same userid) it often gets "-1" for values.  I've found no clues in the
> docs or FAQs as to the meaning of "-1" in the log file.
>
> Here is the top of the log when I run it...
>
> 993773127 4100408 581048
> 993773127 4100408 581048 4100408 581048
> 993772961 1 1 1 1
> 993772800 2200591 311930 4100512 581280
> 993772500 1886242 267368 4100536 581256
> 993772200 1 1 1 1
> 993771900 683679 97179 4102120 583128
> 993771600 1 1 1 1
> 993771300 1 1 1 1
> 993771000 1 1 1 1
> 993770700 1 1 1 1
>
> Here is the top of the log a little bit later.
>
> 993773261 -1 -1
> 993773261 1 1 1 1
> 993773127 4100408 581048 4100408 581048
> 993773100 1899856 269219 4100408 581048
> 993772800 2200591 311930 4100512 581280
> 993772500 1886242 267368 4100536 581256
> 993772200 1 1 1 1
> 993771900 683679 97179 4102120 583128
>
> Config details below.  I have tried playing with MaxBytes and
> AbsMax, thinking that might be the issue, but no luck.
>
> Bob
>

-- 
><>  ><>  ><>  ><>  ><>  ><>  ><>  ><>  ><>  ><>  ><>  ><>  ><>
Bob Van Cleef, Member of Technical Staff         (408) 734-8100
MicroUnity Systems Engineering, Inc.         FAX (408) 734-8136
376 Martin Ave., Santa Clara, CA 95050  vancleef at microunity.com



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