check_tom_mem

#!/bin/sh
# Original script at https://code.google.com/p/check-tomcat-sessions/source/browse/check_tomcatSessions

# Modified by Felipe Ferreira http://felipeferreira.net 12/2014

# Set some defaults
R=`date +%s | sha256sum | base64 | head -c 4`
TMP="/tmp/tom_${R}.tmp"
VERSION="2.0"
USERNAME=Administrator
PASSWORD=password
SERVER=localhost
PORT=8080
WARNING_LEVEL=100
CRITICAL_LEVEL=400
TOMCAT_VERSION="6"

usage ()
{
   echo "Usage: `basename $0` [ -H hostname or IP address ] [ -P port ] [ -u username ] [ -p password ] [ -w warning ] [ -c critical ] [ -V tomcat_version (6 for tomcat pre-7 or 7) ]" >&2
   echo ""
   exit 0
}

version ()
{
   echo "`basename $0` $THE_VERSION"
}

# MAIN

while getopts ":u:p:H:P:w:c:V:hv" opt
do
   case "$opt" in
      u)
         USERNAME="$OPTARG"
      ;;
      p)
         PASSWORD="$OPTARG"
      ;;
      H)
         SERVER="$OPTARG"
      ;;
      P)
         PORT="$OPTARG"
      ;;
      w)
         WARNING_LEVEL="$OPTARG"
      ;;
      c)
         CRITICAL_LEVEL="$OPTARG"
      ;;
      h)
         usage
         exit 1
      ;;
      V)
         TOMCAT_VERSION="$OPTARG"
      ;;
      v)
         version
         exit 1
      ;;
   esac
done


case $TOMCAT_VERSION in
   6):
      NUMSESS_PATH="manager/list"
      ;;
   7)
      NUMSESS_PATH="manager/text/list"
      ;;
   *)
      echo "Available versions are: "
      echo "   6 (default: all tomcat pre-7)"
      echo "   7 tomcat 7"
      exit 1
      ;;
esac


########## MAIN #############################################

if [ $# -eq 0 ] ; then
   usage
   exit 2
fi

URL="http://${SERVER}:${PORT}/manager/status"
`curl -s --user ${USERNAME}:${PASSWORD} $URL > $TMP` 

TM=`cat $TMP |awk -F"<p>" '{ print $3 }'  |awk '{ print $7 }' |cut -d. -f1 |sed '/^$/d;s/[[:blank:]]//g'`
FM=`cat $TMP |awk -F"<p>" '{ print $3 }'  |awk '{ print $3 }' |cut -d. -f1 |sed '/^$/d;s/[[:blank:]]//g'`
UM=`expr $TM - $FM`

#validate
T=`cat $TMP |awk -F"<p>" '{ print $3 }' |grep -c "memory"`

rm -f $TMP

if [ -z "$FM" ] || [ "$T" -eq "0" ]; then
   echo "UNKOWN - Memory numbers not found, verify tomcat $SERVER $PORT or script "
   exit 3
fi

MSG="Tomcat $SERVER $PORT,  Total Memory = $TM, Free Memory = $FM, Used Memory = $UM|Used_Memory=$UM"
if [ "$UM" -gt "$CRITICAL_LEVEL" ]; then
   echo "CRITICAL - $MSG"
   exit 2
elif [ "$UM" -gt "$WARNING_LEVEL" ]; then
   echo "WARNING - $MSG"
   exit 1
else
   echo "OK - $MSG"
   exit 0
fi