snmp-check external monitor
Problem this snippet solves: This external monitor script runs an snmpget to pool members and marks the members up or down based upon the result. Specifically created for this GTM/APM use case, but can be modified as needed. How to use this snippet: copy the contents of this file into /config/monitors/snmp-check, and then in the external monitor configuration, reference the monitor and provide the following variable key/value pairs: result=<result> community=<community> OID=<oid> Code : #!/bin/sh # # (c) Copyright 1996-2005 F5 Networks, Inc. # # This software is confidential and may contain trade secrets that are the # property of F5 Networks, Inc. No part of the software may be disclosed # to other parties without the express written consent of F5 Networks, Inc. # It is against the law to copy the software. No part of the software may # be reproduced, transmitted, or distributed in any form or by any means, # electronic or mechanical, including photocopying, recording, or information # storage and retrieval systems, for any purpose without the express written # permission of F5 Networks, Inc. Our services are only available for legal # users of the program, for instance in the event that we extend our services # by offering the updating of files via the Internet. # # @(#) $Id: sample_monitor,v 1.3 2005/02/04 18:47:17 saxon Exp $ # # # these arguments supplied automatically for all external pingers: # $1 = IP (nnn.nnn.nnn.nnn notation or hostname) # $2 = port (decimal, host byte order) # $3 and higher = additional arguments # # $MONITOR_NAME = name of the monitor # # In this sample script, $3 is the regular expression # #These lines are required to control the process ID of the monitor pidfile="/var/run/$MONITOR_NAME.$1..$2.pid" if [ -f $pidfile ] then kill -9 `cat $pidfile` > /dev/null 2>&1 fi echo "$$" > $pidfile #Since version9 uses the ipv6 native version of the IP address, parse that down #for usage node_ip=`echo $1 | sed 's/::ffff://'` #Log the variables for debugging #echo IP= $node_ip Port =$2 OID= $OID comm= $community result= $result >> /var/tmp/test #Create a variable called answer that contains the result of the snmpwalk. answer=`snmpget $node_ip -c $community -O v $OID | awk '{print $2}'` #Log the answer for debugging #echo Answer= $answer >> /var/tmp/test if [ $answer -lt $result ] then echo "up" fi rm -f $pidfile Tested this on version: No Version Found
