From owner-freebsd-questions  Fri Jul 13 11:57:36 2001
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Date: Fri, 13 Jul 2001 14:57:29 -0400
From: Daniel Frazier <dfrazier@magpage.com>
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To: Joe Clarke <marcus@marcuscom.com>
Cc: Graham White <graham@bravenet.com>,
	FreeBSD-questions <FreeBSD-questions@FreeBSD.ORG>
Subject: Re: Newbie Bash-question
References: <20010713144955.P25152-100000@shumai.marcuscom.com>
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Joe Clarke wrote:

> [ expects an integer for both arg 1 and arg 2.  .30 is not an integer.
> 
> if [ $LOAD -qt 1 ]; then
> 
> should work for you.  IF you need more granularity, you can use Perl.
> 


here's the perl code we use to do this...

#!/usr/bin/perl

$max_load = 3;

$hostname = `uname -n`;
chomp $hostname;

open (IN, "uptime|");

$line = <IN>; $line =~ /load average: (.*)/; $load_avg = $1;

($l1, $l2, $l3) = split (/\, /, $load_avg);

$load = int($l1);

if ($load >= $max_load) {
   open (SENDMAIL, "|/usr/lib/sendmail -t");

   print SENDMAIL <<EOF;
To: sysadmin\@magpage.com
Subject: Excessive Load Average !

WARNING!

The load on $hostname is currently at $l1, which is beyond its threshold
of $max_load.00. Please investigate this situation.

EOF
   close (SENDMAIL);
}

close (IN);

exit 0;



-- 
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Daniel Frazier  <dfrazier@magpage.com>   Tel:  302-239-5900 Ext. 231
Systems Administrator                    Fax:  302-239-3909
MAGPAGE, We Power the Internet           WWW:  http://www.magpage.com/

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