Quick snippet for checking network health of google.com (external) and wiki.xxxxxx.com (internal) to try and pinpoint when and to what extend network issues are occurring.

internal-network-healthcheck.py

import socket
import time
import datetime


def is_connected(remote_server):
    try:
        host = socket.gethostbyname(remote_server)
        socket.create_connection((host, 80), 2)
        return True
    except socket.error:
        pass
    return False


def main():
    with open('/tmp/network_results.csv', 'w') as wr:
        print('Date time,Google,Wiki\n')
        wr.write('Date time,Google,Wiki\n')

    while True:
        time.sleep(1)
        google = '0'
        if is_connected('www.google.com'):
            google = '1'

        wiki = '0'
        if is_connected('wiki.xxxxxx.com'):
            wiki = '1'

        date = datetime.datetime.now().strftime("%Y-%m-%dT%H:%M:%S.%f%Z")

        with open('/tmp/network_results.csv', 'a') as f:
            print(','.join([date, google, wiki]))
            f.write(','.join([date, google, wiki]) + '\n')


if __name__ == '__main__':
    main()