Send Mail plugin for Nagios

send_mail.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

"""
Script Send Mail Nagios (send_mail.py)
Copyrighted by Nilton OS <jniltinho at gmail.com>
License: LGPLv3 (http://www.gnu.org/licenses/lgpl.html)
Version: 0.1

Put this script in Nagios plugins folder
Default Nagios Ubuntu/Debian: /usr/lib/nagios/plugins

define command{
   command_name    host-notify-by-email
   command_line    $USER1$/send_mail.py -N "HOST $NOTIFICATIONTYPE$" -H "$HOSTNAME$" -S "$HOSTSTATE$" -A "$HOSTADDRESS$" -I "$HOSTOUTPUT$" -D "$LONGDATETIME$" -E "$CONTACTEMAIL$"
}

define command{
   command_name    service-notify-by-email
   command_line    $USER1$/send_mail.py -N "$NOTIFICATIONTYPE$" -H "$HOSTNAME$" -S "$SERVICESTATE$" -A "$HOSTADDRESS$" -I "$SERVICEDESC$ - $SERVICEOUTPUT$ - $SERVICECHECKCOMMAND$" -D "$LONGDATETIME$" -E "$CONTACTEMAIL$"
}

"""

import os, sys, optparse, socket
import commands, time

#from smtplib import SMTP_SSL as SMTP       #secure SMTP protocol (port 465, uses SSL)
from smtplib import SMTP                    #standard SMTP protocol (port 25,587, no SSL)
from email.MIMEText import MIMEText



#---------------------------------------------------------------------------
## Change these fields without
l_hostname  = socket.gethostname()
log_file    = '/tmp/send_mail_py.log'
srv_name    = "Nagios MAIL ALERT"
SMTPserver  = 'smtp.mydomain.com'
sender      = 'nagios.alert@mydomain.com'
USERNAME    = 'nagios.alert@mydomain.com'
PASSWORD    = 'password_nagios_email'
#---------------------------------------------------------------------------
verbose    = False
message    = ''

usage = "usage: host-notify-by-email\n %prog "
usage += '-N "HOST $NOTIFICATIONTYPE$" -H "$HOSTNAME$" -S "$HOSTSTATE$" -A "$HOSTADDRESS$" -I "$HOSTOUTPUT$" -D "$LONGDATETIME$" -E "$CONTACTEMAIL$"'
usage += "\n\n"
usage += "usage: service-notify-by-email\n %prog "
usage += '-N "$NOTIFICATIONTYPE$" -H "$HOSTNAME$" -S "$SERVICESTATE$" -A "$HOSTADDRESS$" -I "$SERVICEDESC$ - $SERVICEOUTPUT$ - $SERVICECHECKCOMMAND$" -D "$LONGDATETIME$" -E "$CONTACTEMAIL$"'



def log(mes):
    global message
    str = ("%s - %s\n") %(time.strftime('%b %d %H:%M:%S'), mes)
    message += str
    if verbose: str = str.rstrip("\n"); print str



def send_mail(receiver, Subject, mailbody):
    global message
    subject   = Subject
    receiver  = receiver
    text_subtype = 'plain'

    try:
        msg = MIMEText(mailbody, text_subtype)
        msg['Subject']= subject
        msg['From']   = ("%s <%s>" %(srv_name,sender))
        msg['To']     = receiver
        receiver = receiver 

        conn = SMTP(SMTPserver,587,l_hostname)
        conn.set_debuglevel(False)
        conn.login(USERNAME, PASSWORD)
        try:
            conn.sendmail(sender, receiver, msg.as_string())
        finally:
            conn.close()

    except Exception, exc:
        log( "mail failed; %s" % str(exc) ) # give a error message




def main():
    global verbose, message
    parser = optparse.OptionParser(usage)
    parser.add_option("-N", action="store", type="string", dest="N", help="NOTIFICATIONTYPE")
    parser.add_option("-H", action="store", type="string", dest="H", help="HOSTNAME")
    parser.add_option("-S", action="store", type="string", dest="S", help="SERVICESTATE")
    parser.add_option("-A", action="store", type="string", dest="A", help="HOSTADDRESS")
    parser.add_option("-I", action="store", type="string", dest="I", help="DESCRIPTION")
    parser.add_option("-D", action="store", type="string", dest="D", help="LONGDATETIME")
    parser.add_option("-E", action="store", type="string", dest="E", help="CONTACTEMAIL")
    parser.add_option("--debug", action="store_true", dest="DEBUG", help="Enable Debug")
    opt, args = parser.parse_args()

    if (opt.DEBUG): verbose = True

    mailbody = """\
    ***** %s *****

    Notification Type: %s
    Host: %s
    State: %s
    Address: %s

    Date/Time: %s
    Additional Info: %s
    """ % (srv_name, opt.N, opt.H, opt.S, opt.A, opt.D, opt.I)



    if (opt.E):
        log("Sent Mail TO %s" % opt.E)
        log(mailbody)
        mailsubject =   ("Nagios Alert:[%s] -- IS:[%s]") %(opt.H, opt.S)
        send_mail(opt.E, mailsubject, mailbody)
        salve_log = open(log_file,"a+"); salve_log.write(message); salve_log.close()


if __name__ == "__main__":
    main()