On Fri, Feb 6, 2009 at 3:48 PM, Ralph Mitchell <ralphmitchell at gmail.com> wrote:

I don't think that's possible with Xymon right now, but it can be done if you're up to a little scripting. I had an aging, single 733MHz cpu DL380 running web page checkouts on 400+ hosts, generating around 2700 reports, running at various intervals from 30 seconds to 24 hours.

The trick is to use cron for scheduling...

Something like this, for instance:

============= cut here ============ #!/bin/sh

TESTHOST=www.google.com TESTURL=http://$TESTHOST/

TIMEOUT=30

Grab *just* the headers, simulating Xymon's builtin http check

MESSAGE=curl -m $TIMEOUT \ -w 'Seconds: %{time_total}\n' \ -s -S -L -I $TESTURL | $GREP -v Set-Cookie if [ "$?" -eq "0" ]; then COLOR=green else COLOR=red fi

convert dots to commas in the hostname

MACHINE=`echo $TESTHOST | $SED -e 's/\./\,/g'

$BB $BBDISP "status $MACHINE.home $COLOR date

$MESSAGE" ============= cut here ============

This curl command looks all I need as an extension script instead of http:// to get my host specific http timeout

I could just use this instead of urlplus.pl, correct?

You'd run that from xymon's crontab using a command line like:

 $HOME/server/bin/bbcmd $HOME/ping-google.sh > /tmp/ping-google.out 2>&1

at whatever interval is appropriate for the target.

Ralph Mitchell

On Thu, Feb 5, 2009 at 11:25 AM, David Paper <hobbit at ginch.org> wrote:

...

Greetings hobbit gurus [0],

While I am still trying to search my way to an answer via the archives of this list and google, I'm hoping someone could point me in the right direction.

I've got a bb-hosts file with 8 server process instances getting tested. Each instance gets tested with 3 HTTP requests (2 GET, 1 POST). All 8 server processes live on the same physical OS instance. This results in 24 HTTP requests getting sent from hobbit within 1/100th of a second. This causes the load on the host to spike, and generates contention w/in each server to satisfy the requests. This same setup is repeated for hundreds of hosts and hundreds of processes.

Is there a way to tell hobbit to take all of the entries in bb-hosts and test them in a random order w/in the 1 minute testing interval? This would end up staggering the arrival of each HTTP test somewhat and lessen contention within each HTTP server and on each host.

Thanks,

-dave

[0] Of which I am not, but ... maybe one day.

-- Dave Paper

MCSE is to computers as McDonalds Certified Chef is to fine cuisine.

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