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pgroven_71837's avatar
pgroven_71837
Icon for Nimbostratus rankNimbostratus
Jan 09, 2008

HTTPMonitor_cURL_ProbeTimeout

I am not sure how to implement the sample monitor posted on DevCentral   I cannot use the http monitor as the string I need to recieve is longer than 5120 bytes   The following script should wor...
management
monitoring
Deb_Allen_18's avatar
Deb_Allen_18
Historic F5 Account
Jan 09, 2008
OK...

Assuming your pool members are listening for monitor traffic on the same port as load balanced traffic, use this script:


 remove IPv6/IPv4 compatibility prefix (LTM passes addresses in IPv6 format)
IP=`echo ${1} | sed 's/::ffff://'`
PORT=${2}
PIDFILE="/var/run/`basename ${0}`.${IP}_${PORT}.pid"
 kill of the last instance of this monitor if hung and log current pid
if [ -f $PIDFILE ]
then
   kill -9 `cat $PIDFILE` > /dev/null 2>&1
fi
echo "$$" > $PIDFILE
 send request & check for expected response
curl -fNs -m ${P_TIMEOUT} http://${IP}:${PORT}${URI} | grep -i "${RECV}" 2>&1 > /dev/null
 let bigd mark node UP if expected response was received
 otherwise force the node DOWN immediately
if [ $? -eq 0 ]
then
    echo "UP"
else
    /bin/bigpipe pool ${POOL} member ${IP}:${PORT} down 2>&1 > /dev/null
fi
rm -f $PIDFILE
exit

And configure your monitor with these variables:
RECV=w50-[12].c50.domain.com:6802 .ok.
POOL=cwmp.stage.443
URI=/caucho-status
P_TIMEOUT=5

HTH

/deb