clock_skew.py

#!/usr/bin/env python
#
# clock_skew.py
# This script reads json data from /tmp/sigsci-agents.json
# and prints a message if an agent's clock skew is greater
# or equal to the defined thresholds.
#
# SigSciApiPy (https://github.com/signalsciences/SigSciApiPy) is
# an easy way to pull agent data from the Signal Sciences API and
# save it to /tmp/sigsci-agents.json
#
# Example usage with SigSciApi.py:
# ./SigSci.py --agents > /tmp/sigsci-agents.json; ./clock_skew.py
#

# Thresholds
WARN  = 3
ALERT = 5

import json

agents = open('/tmp/sigsci-agents.json', 'r')
data   = json.load(agents)
skew   = 0
count  = 0

agents.close()

for agent in data['data']:
    skew = int(agent['host.clock_skew'])

    if skew >= ALERT:
        print("ALERT: Clock skew for {0} is {1}".format(agent['agent.name'], skew))
        count += 1

    elif skew >= WARN:
        print("WARNING: Clock skew on {0} is {1}".format(agent['agent.name'], skew))
        count += 1

if count == 0:
    print("Everything is running on time!")