#! /bin/bash

#This Plug-in monitors the Blacklisted node entry on Job tracker UI page , and if there are any Blacklisted nodes present will generate an alert.
# Possible Alerts are ( Ok- NO blacklisted alerts , Critical- Not able to access the Job Tracker Status Page, Warning - one or more node got blacklisted )

# Author - Juned Memon



#########THIS part is for Nagios ################################
PROGNAME=`/usr/bin/basename $0`
PROGPATH=`echo $0 | sed -e 's,[\\/][^\\/][^\\/]*$,,'`
REVISION=`echo '$Revision: 1749 $' | sed -e 's/[^0-9.]//g'`
#. $PROGPATH/utils.sh
.  /usr/local/nagios/libexec/utils.sh

######################################################################

curl_call=`curl -m 10 -sS  http://127.0.0.1:50030/machines.jsp?type=blacklisted`
pagestatus=$?
check=`echo "$curl_call"|grep -i 'There are currently no known blacklisted Task Trackers.'`
if [[ "$pagestatus" == "0" ]]; then

        if [[ "$check" != "There are currently no known blacklisted Task Trackers."  ]]; then

                echo "Warning:A Node is Blacklisted!"
                                exitstatus=$STATE_CRITICAL
                                exit $exitstatus

                           else

                           echo "OK: No Blacklisted nodes found"
                           exitstatus=$STATE_OK
                           exit $exitstatus

        fi
else
echo "Critical: Problem Getting Status Page. "
exitstatus=$STATE_CRITICAL
exit $exitstatus

fi
~
~