Data Center Temperature Monitoring via BASH Script

Following is an bash script to monitor data center temperature via SNMP query from Emerson UPS. We can monitor the temperature via manageable ups builtin feature as well, but since i was required to do some extra functions which were not supported by the ups web panel, so i made following. although i removed few functions, but sharing it for general public as an example.

Following is an example code of SNMP query of temperature monitor from Emerson UPS ITA 10k UPS. [Sensor IRM-S02TH-001]

root@linux:/temp# snmpwalk -v2c -Oqv -c public  10.0.0.2  1.3.6.1.4.1.13400.2.62.2.1.2.0

2070

#!/bin/bash
# Function: DATA CENTER TEMPERATURE ALERT SCRIPT
# Scheduled Script to check data center temperature via SNMP after every 5 minutes.
# If it found high or above our defined limit, send sms or email Alerts, but donot repeat it untill next status change.
# Script Designed by Syed Jahanzaib
# aacable at hotmail dot com
# http://aacable . wordpress . com
#set -x

# Colors Config . . . [[ JZ . . . ]]
ESC_SEQ="\x1b["
COL_RESET=$ESC_SEQ"39;49;00m"
COL_RED=$ESC_SEQ"31;01m"
COL_GREEN=$ESC_SEQ"32;01m"
DATE=`date`

# COMPANY NAME
COMPANY="ZABBO"

# Hostname
HOSTNAME=`hostname`

# KANNEL SMS Gateway Info
KANNELURL="10.0.0.1:13013"
KANNELID="kannel"
KANNELPASS="kannelpass"
CELL1="03333021909"

# GMAIL DETAILS
GMAILID="YOURGMAILID@gmail.com"
GMAILPASS="YOURGMAIL-PASS"
ADMINMAIL1="ADMIN-MAIL@hotmail.com"
SENDMAILAPP="/temp/sendEmail-v1.56/sendEmail"
STATUS_HOLDER="/tmp/datacentertemperature.txt"

# If temporary status holder is not present , then create it,
# forumla is being applied to prevent repeated attempt of file creation / zaib
if [ ! -f $STATUS_HOLDER ]; then
echo -e "Creating Status Holder for first time usage"
touch $STATUS_HOLDER
fi

# SMS and email msg fromat for up n down
MSG_UP="$COMPANY Alert:

$LOWMSG $DATE
$FOOTER"

MSG_DOWN="$COMPANY Alert:

$HIGHMSG @ $DATE
$FOOTER"

# UPSIP , example i m using is emerson UPS
UPSIP="10.0.0.2"
UPSTEMPOID="1.3.6.1.4.1.13400.2.62.2.1.2.0"
UPSSNMPCOM=public"

# set Temperaturte limit
TEMPLIMIT="24"

# Check for temperature via SNMP query, make sure to chhange it accordingly
# currently i am using emerson UPS with snmp web card, as example
TEMPRATURE=`snmpwalk -v2c -Oqv -c $UPSSNMPCOM $UPSIP $UPSTEMPOID`
# divide temperature formula which comes like 2100 , so divide with /100 so we get 21 actuall, just an example
TEMPFINAL=$(($TEMPRATURE / 100))

HIGHMSG="$COMPANY Data Center Temperature is HIGH, that is $TEMPFINAL"
LOWMSG="$COMPANY Data Center Temperature is OK , that is $TEMPFINAL"
FOOTER="Powered by Syed Jahanzaib"
UPMSG="/tmp/upmsg.sms"
DOWNMSG="/tmp/downmsg.sms"
# Print Values
echo -e "Maximum Temperature Allowed = $COL_GREEN $TEMPLIMIT c $COL_RESET
Current Temperature = $COL_RED $TEMPFINAL c$COL_RESET"

# Matchign Formula starts here .. zaib
# IF temperature result is greater the our defined limit, then give alert
if [ "$TEMPFINAL" -gt "$TEMPLIMIT" ]; then
echo -e "$COL_RED $HIGHMSG $COL_RESET"
if [ $(grep -c "TEMP" "$STATUS_HOLDER") -eq 1 ]; then
echo -e "$COL_RED SMS/Email have already been sent $COL_RESET"
fi
fi

# IF temperature result is greater the our defined limit, then send sms and email, IF NOT ALREAY SENT
if [ "$TEMPFINAL" -gt "$TEMPLIMIT" ]; then
if [ $(grep -c "TEMP" "$STATUS_HOLDER") -eq 0 ]; then
echo -e "$COL_RED ALERT: $HIGHMSG $(date) / SENDING SMS/Email .... $COL_RESET"
echo "$MSG_DOWN" > $DOWNMSG

# Sending DOWN SMS via KANNEL
cat $DOWNMSG | curl "http://$KANNELURL/cgi-bin/sendsms?username=$KANNELID&password=$KANNELPASS&to=$CELL1" -G --data-urlencode text@-
# Sending Email via sendEmail tool app using GMAIL
$SENDMAILAPP -u "$HIGHMSG @ $DATE" -o tls=yes -s smtp.gmail.com:587 -t $ADMINMAIL1 -xu $GMAILID -xp $GMAILPASS -f $GMAILID -o message-file=$DOWNMSG -o message-content-type=text

echo "TEMP" > $STATUS_HOLDER
fi
else
echo -e "$COL_GREEN $LOWMSG ... $COL_RESET"
if [ $(grep -c "TEMP" "$STATUS_HOLDER") -eq 1 ]; then
echo -e "$COL_GREEN $COMPANY ALERT : $HEADING $LOWMSG $(date) / SENDING SMS/Email .... $COL_RESET"
echo "$MSG_UP" > $UPMSG
# Sending UP SMS via KANNEL
cat $UPMSG | curl "http://$KANNELURL/cgi-bin/sendsms?username=$KANNELID&password=$KANNELPASS&to=$CELL1" -G --data-urlencode text@-
# Sending Email via sendEmail tool app using GMAIL
$SENDMAILAPP -u "$LOWMSG @ $DATE" -o tls=yes -s smtp.gmail.com:587 -t $ADMINMAIL1 -xu $GMAILID -xp $GMAILPASS -f $GMAILID -o message-file=$UPMSG -o message-content-type=text
sed -i "/TEMP/d" "$STATUS_HOLDER"
fi
fi

# Script Ends Here
# Syed Jahanzaib / aacable @ hotmail . com
# http:// aacable . wordpress . com

Result:

High Temperature Alert Email Sample:

Low Temperature Alert Email Sample:

SMS RESULT: