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host_nagiostelegram.py
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host_nagiostelegram.py
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#!/usr/bin/env python
# file : host_nagiostelegram.py
# purpose : send nagios notifications via Telegram bot
#
# author : harald van der laan
# date : 2021/06/03
# version : v1.0.2
#
# fix : sistemmsn
#
# changelog:
# - v1.0.2 added pnp4nagios
# - v1.0.1 added nagios command
# - v1.0.0 initial commit (harald)
''' host_nagiostelegram.py - small python script for sending nagios messages via a telegram
bot. Please see BotFather for more info about telegram bots
https://core.telegram.org/bots
Open telegram -> search for contacts: @BotFather
send the following message to BotFather
/newbot -> and answer the questions of BotFather
# getting your telegram or group id
1) send a message to you bot and surf to:
https://api.telegram.org/bot<token>/getStatus
2) download telegram-cli and send a message to the bot
usage:
# host event
./host_nagiostelegram.py --token <token> --contact <contact|group_id> \
--notificationtype 'host' --hoststate <UP|DOWN|UNREACHABLE> \
--hostname <hostname> --hostaddress <ipaddress> \
--output <event message>
# nagios configuration
define command {
command_name notify-host-by-telegram
command_line $USER1$/host_nagiostelegram.py --token <token> \
--notificationtype host --contact "$CONTACTPAGER$" --notificationtype "$NOTIFICATIONTYPE$" \
--hoststate "$HOSTSTATE$" --hostname "$HOSTNAME$" --hostaddress "$HOSTADDRESS$" --output "$HOSTOUTPUT$"
}
define contact {
contact_name nagios telegram bot
pager -<contact|group_id>
host_notification_commands notify-host-by-telegram
}'''
from __future__ import print_function
import sys
import argparse
import json
import requests
import shutil
import time
from requests.auth import HTTPBasicAuth
graph_history = 12
tstamp = time.time()
elapse = graph_history * 3600
start = graph_history - elapse
end = tstamp
pnp4nagios = "http://192.5.212.249/pnp4nagios/"
hostsimg = open('/usr/local/nagios/img/hosts.png', 'rb')
srvhost = "_HOST_"
def parse_args():
''' function for parsing arguments '''
parser = argparse.ArgumentParser(description='Nagios notification via Telegram')
parser.add_argument('-t', '--token', nargs='?', required=True)
parser.add_argument('-o', '--object_type', nargs='?', required=True)
parser.add_argument('--contact', nargs='?', required=True)
parser.add_argument('--notificationtype', nargs='?')
parser.add_argument('--hoststate', nargs='?')
parser.add_argument('--hostname', nargs='?')
parser.add_argument('--hostaddress', nargs='?')
parser.add_argument('--servicestate', nargs='?')
parser.add_argument('--servicedesc', nargs='?')
parser.add_argument('--output', nargs='?')
args = parser.parse_args()
return args
def send_notification_photo(token, user_id, file_opened):
''' function for sending notification via Telegram bot '''
url = 'https://api.telegram.org/bot' + token + '/sendPhoto'
files = {'photo': file_opened}
payload = {'chat_id': user_id}
return requests.post(url, data=payload, files=files)
def send_notification_message(token, user_id, message):
''' function for sending notification via Telegram bot '''
url = 'https://api.telegram.org/bot' + token + '/sendMessage'
payload = {'chat_id': user_id, 'text': message}
return requests.post(url, data=payload)
def host_notification(args):
''' creating host notification message '''
state = ''
if args.hoststate == 'UP':
state = u'\U00002705 '
elif args.hoststate == 'DOWN':
state = u'\U0001F525 '
elif args.hoststate == 'UNREACHABLE':
state = u'\U00002753 '
return '{}{} ({}): {}' .format(state.encode('utf-8'), args.hostname,
args.hostaddress, args.output)
def main():
''' main function '''
args = parse_args()
user_id = int(args.contact)
if args.object_type == 'host':
message = host_notification(args)
response = send_notification_message(args.token, user_id, message)
respones = send_notification_photo(args.token, user_id, hostsimg)
host = parse_args()
hostsurl = str(pnp4nagios)+'image?host='+str(host.hostname)+'&srv='+str(srvhost)+'&view=0&source=0&start'+str(round(start,0)).replace('0','')+'&end='+str(round(end,0)).replace('.0','')
file = '/usr/local/nagios/img/hosts.png'
hostsurl = requests.get(hostsurl, auth=HTTPBasicAuth('nagiosadmin','123456'), stream=True)
if hostsurl.status_code == 200:
with open(file, 'wb') as f:
hostsurl.raw.decode_content = True
shutil.copyfileobj(hostsurl.raw, f)
if __name__ == "__main__":
main()
sys.exit(0)