continuously watching a specific host by ping and raising an alert (post to the slack channel by webhook URL) when the host is unreachable

watch-by-ping.py

import time
import requests
import json
import pings  # pip install pings

HOSTNAME = '{{ HOSTNAME }}'
PING_TIMES = 10
SLEEP_TIME = 100
WEBHOOK_URL = '{{ WEBHOOK_URL }}'


def post_slack(text):
    requests.post(WEBHOOK_URL, data=json.dumps({
        'text': text,
        'username': 'ping bot',
        'icon_emoji': ':thinking_face:',
    }))


if __name__ == '__main__':
    p = pings.Ping(quiet=False)

    while True:
        response = p.ping(HOSTNAME, times=PING_TIMES)

        if not response.is_reached():
            post_slack(HOSTNAME + ': host might be down!')
        time.sleep(SLEEP_TIME)