On 05/02/2015 2:30 PM, "John Palys" <johnpalys at schoolpathways.com> wrote:

A simple script. Same script is running on all servers, only some have the issue reported.

Probably because its only sometimes that the xymon client script runs at the same time as the cron job. You'll probably find that they drift out of sync over time, and different servers will be showing this phenomenon at different times, because the xymon client script runs slightly later each time (ie not exactly every 5 minutes).

LOGFILE=/tmp/cron_list.log

cat /var/spool/cron/root > /tmp/cron_list.log

snip (why not use $LOGFILE here)

cat /var/spool/cron/cworks >> /tmp/cron_list.log

RESULT=cat $LOGFILE

LINE="status $MACHINE.$TEST $COLOR date

$RESULT"

$XYMON $XYMSRV "$LINE"

This is the problem. The contents of cron_list.log (ie a copy of the crontab) is put into $RESULT and in turn into $LINE. Then the text is given to the xymon command as a parameter, for all to see in ps output.

As soon as you use backticks, you're going to get into trouble. You can't do anything useful with $RESULT without its contents appearing on a command line in ps output, should it happen to run at the same time.

Instead, use the alternative form of running xymon, by specifying a parameter of "@" and feeding the message on stdin. Like so:

LINE="status $MACHINE.$TEST $COLOR date { echo "$LINE"; echo; cat $LOGFILE; } | $XYMON $XYMSRV "@"

And get rid of the line that sets $RESULT cos you don't need it anymore.

J Jeremy,

A simple script. Same script is running on all servers, only some have the issue reported. The xymon ../ext/crontab.sh which sends the output TO the xymon server is identical to the mis-behaving servers.

#!/bin/bash

LOGFILE=/tmp/cron_list.log

cat /var/spool/cron/root > /tmp/cron_list.log

if [ -f /var/spool/cron/cworks ]; then echo "================================" >> /tmp/cron_list.log

cat /var/spool/cron/cworks >> /tmp/cron_list.log

else echo "" fi

#!/bin/sh

Standard XYMON stuff

if [ "$XYMONHOME" = "" ]; then

echo "XYMONHOME is not set... exiting"

exit 1

fi

if [ ! "$XYMONTMP" ]; then

. $XYMONHOME/etc/bbdef.sh

fi

#-----------------------

EDIT Variables here

#-----------------------

TEST=crontab COLOR=green LOGFILE=/tmp/cron_list.log TMPFILE=$XYMONHOME/tmp/$TEST.tmp

RESULT=cat $LOGFILE

LINE="status $MACHINE.$TEST $COLOR date

$RESULT"

$XYMON $XYMSRV "$LINE"

#rm -f $BBTMP/$TEST.tmp

#rm -f $TMPFILE

On Wed, Feb 4, 2015 at 6:54 PM, Jeremy Laidman <jlaidman at rebel-it.com.au> wrote:

Ben

On 5 February 2015 at 13:03, Benjamin Smith <lists at benjamindsmith.com> wrote:

...

cat crontab files to /tmp/cron_list.log for xymon crontab.sh

0 * * * * /root/bin/std/show_crontab.sh??#XYMON?#?

What does this script (show_crontab.sh) do?

Cheers Jeremy

-- John Palys School Pathways, Inc. 866-200-6936 #2010 * Office*