SMS notifications and alarms with Nagios via GSM
The networked IT monitoring devices of the 500/500-DC series can be equipped with a GSM modem. This internal Didactum GSM modem can be directly accessed by Nagios or Nagios forks to send SMS notifications and alerts to administrators and IT managers.
Therefore, there is no need to purchase an additional GSM modem for sending SMS alerts under Nagios.
sendsms_didactum
#!/bin/bash
usage()
{
cat << EOF
usage: $0 options
OPTIONS:
-?,-h Show this message
-H Hostname or IP address
-p password
-P Phone for sending
-m Message for sending
EOF
}
HOST=
PASSWD=
TOPHONE=
MESSAGE='Test'
while getopts “hH:p:P:m:” OPTION
do
case $OPTION in
h)
usage
exit 1
;;
H)
HOST=$OPTARG
;;
p)
PASSWD=$OPTARG
;;
P)
TOPHONE=$OPTARG
;;
m)
MESSAGE=$OPTARG
;;
?)
usage
exit
;;
esac
done
#echo $HOST
#echo $PASSWD
#echo $TOPHONE
#echo $MESSAGE
if [[ -z $HOST ]] || [[ -z $PASSWD ]] || [[ -z $TOPHONE ]] || [[ -z $MESSAGE ]]
then
usage
exit 1
fi
curl -d "epassword=${PASSWD}&
querytype=send_sms_message" --data-urlencode "to_phone=${TOPHONE}" --data-urlencode "message=${MESSAGE}" $HOST/engine.htm > /dev/null 2>&1
SMS send script for versions from 2.4.x
#!/bin/bash
# SMS send script for versions from 2.4.x
usage()
{
cat << EOF
usage: $0 options
OPTIONS:
-?,-h Show this message
-H Hostname or IP address
-u User name
-p Password
-P Phone for sending
-m Message for sending
EOF
}
HOSTIP=
USERNAME=
PASSWORD=
TOPHONE=
MESSAGE='Test'
while getopts “hH:u:p:P:m:” OPTION
do
case $OPTION in
h)
usage
exit 1
;;
H)
HOSTIP=$OPTARG
;;
u)
USERNAME=$OPTARG
;;
p)
PASSWORD=$OPTARG
;;
P)
TOPHONE=$OPTARG
;;
m)
MESSAGE=$OPTARG
;;
?)
usage
exit
;;
esac
done
if [[ -z $HOSTIP ]] || [[ -z $USERNAME ]] || [[ -z $PASSWORD ]] || [[ -z $TOPHONE ]] || [[ -z $MESSAGE ]]
then
usage
exit 1
fi
# 1) hash
HASH=`echo -n ${PASSWORD} | openssl dgst -sha1 | awk '{print $NF}'`
# 2) autorisation
RESPONSE=`curl -s -d "querytype=auth&name=${USERNAME}&h=${HASH}" "${HOSTIP}/engine.htm"`
# 3) session key
KEY=`echo -n ${RESPONSE} | awk -F"\"" '{print $4}'`
# 4) send SMS
curl -d "querytype=send_sms_message&k=${KEY}" --data-urlencode "to_phone=${TOPHONE}" --data-urlencode "message=${MESSAGE}" ${HOSTIP}/engine.htm > /dev/null 2>&1
Send SMS through a script example:
/etc/nagios/objects/schosts.cfg
./sendsms_didactum -H 192.168.0.193 -p secret -P +777 -m 'This is a text'
where 192.168.0.193 - address of the master unit with GSM-modem;
secret - user password for the master unit with GSM-modem;
+777 - phone number to send a message;
'This is a text' - forwarded message text;
In order to bind the current script to Nagios, you must create a notification command in the Nagios configuration file:
/etc/nagios/objects/commands.cfg
define command{
command_name notify-service-by-sms
command_line $USER1$/sendsms_didactum -H 192.168.1.190 -p guest -P $CONTACTPAGER$ -m "Nagios – $NOTIFICATIONTYPE$ : $HOSTALIAS$/$SERVICEDESC$ is $SERVICESTATE$"
}
define command{
command_name notify-host-by-sms
command_line $USER1$/sendsms_didactum -H 192.168.1.190 -p guest -P $CONTACTPAGER$ -m "Nagios – $NOTIFICATIONTYPE$ : Host $HOSTALIAS$ is $HOSTSTATE$"
}
You must also create or edit a Nagios contact:
/etc/nagios/objects/contacts.cfg
define contact{
contact_name nagiosadmin ; Short name of user
use generic-contact ; Inherit default values from generic-contact template (defined above)
alias Nagios Admin ; Full name of user
service_notification_options w,u,c,r
host_notification_options d,u,r
service_notification_commands notify-service-by-email,notify-service-by-sms
host_notification_commands notify-host-by-email,notify-host-by-sms
email nagios@localhost ; <<***** CHANGE THIS TO YOUR EMAIL ADDRESS ******
pager +499999999999 ; <<***** CHANGE THIS TO YOUR PHONE NUMBER ******
}