week1

#network.py

#!/usr/bin/env python3
import requests
import socket
def check_localhost():
        localhost = socket.gethostbyname('localhost')
        return localhost=="127.0.0.1"
def check_connectivity():
        request = requests.get("http://www.google.com")
        return request.status_code==200
        
#health_checks.py

#!/usr/bin/env python3
from network import *
import shutil
import psutil
def check_disk_usage(disk):
        """Verifies that there's enough free space on disk"""
        du = shutil.disk_usage(disk)
        free = du.free / du.total * 100
        return free > 20
def check_cpu_usage():
        """Verifies that there's enough unused CPU"""
        usage = psutil.cpu_percent(1)
        return usage < 75
# If there's not enough disk, or not enough CPU, print an error
if not check_disk_usage('/') or not check_cpu_usage():
        print("ERROR!")
elif check_localhost() and check_connectivity():
        print("Everything ok")
else:
        print("Network checks failed")