94 lines
3.4 KiB
Python
Executable File
94 lines
3.4 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
import argparse
|
|
import sys
|
|
import traceback
|
|
|
|
import psutil
|
|
|
|
import checker.nagios as nagios
|
|
from checker.markdown import list_to_markdown_table
|
|
|
|
parser = argparse.ArgumentParser(description='Check network interface bandwidth utilization.')
|
|
parser.add_argument('--bandwidth', type=float, required=True, help='Bandwidth speed in Mbps. Used to calculate percentage.')
|
|
parser.add_argument('--critical', type=int, default=75, help='Critical if percent of bandwidth usage is greater than or equal to this.')
|
|
parser.add_argument('--warn', type=int, default=50, help='Warning if percent of bandwidth usage is greater than or equal to this.')
|
|
parser.add_argument('--max', type=int, default=None, help='Set the max value the bandwidth can be. Useful for graphs and whatever.')
|
|
parser.add_argument('--ignore', default=None, help='Interface names to ignore.')
|
|
args = parser.parse_args()
|
|
|
|
ignore_interfaces = args.ignore.split(',') if args.ignore else []
|
|
|
|
def main():
|
|
data = []
|
|
warn_value = (args.bandwidth * args.warn / 100)
|
|
crit_value = (args.bandwidth * args.critical / 100)
|
|
|
|
# Get network interface statistics
|
|
net_io_counters = psutil.net_io_counters(pernic=True)
|
|
|
|
# Calculate bandwidth utilization for each interface
|
|
for interface, stats in net_io_counters.items():
|
|
if interface in ignore_interfaces:
|
|
continue
|
|
# Get the number of bytes sent and received
|
|
bytes_sent = stats.bytes_sent
|
|
bytes_recv = stats.bytes_recv
|
|
|
|
# Wait for 1 second
|
|
psutil.cpu_percent(interval=1)
|
|
|
|
# Get the number of bytes sent and received after 1 second
|
|
new_stats = psutil.net_io_counters(pernic=True)[interface]
|
|
new_bytes_sent = new_stats.bytes_sent
|
|
new_bytes_recv = new_stats.bytes_recv
|
|
|
|
# Calculate the bandwidth utilization in bits per second
|
|
bandwidth_utilization = (8 * (new_bytes_sent - bytes_sent + new_bytes_recv - bytes_recv)) / (1 * 1000 * 1000)
|
|
data.append([interface, bandwidth_utilization, 'none'])
|
|
|
|
exit_code = nagios.OK
|
|
critical = []
|
|
warn = []
|
|
ok = []
|
|
perf_data = []
|
|
for i in range(len(data)):
|
|
interface = data[i][0]
|
|
bandwidth_utilization = data[i][1]
|
|
if bandwidth_utilization >= crit_value:
|
|
critical.append(interface)
|
|
state = 'critical'
|
|
exit_code = nagios.CRITICAL
|
|
elif bandwidth_utilization >= warn_value:
|
|
warn.append(interface)
|
|
state = 'warning'
|
|
if exit_code < nagios.WARNING:
|
|
exit_code = nagios.WARNING
|
|
else:
|
|
ok.append(interface)
|
|
state = 'ok'
|
|
data[i][2] = f'[{state.upper()}]'
|
|
perf_data.append(f'{interface}={round(bandwidth_utilization, 2)}MB;{warn_value};{crit_value};{f"0;{args.max};" if args.max else ""} ')
|
|
|
|
if len(ok):
|
|
print(f'OK: {", ".join(ok)}')
|
|
if len(warn):
|
|
print(f'WARNING: {", ".join(warn)}')
|
|
if len(critical):
|
|
print(f'CRITICAL: {", ".join(critical)}')
|
|
|
|
data = [(x[0], f'{round(x[1], 2)} Mbps', x[2]) for x in data]
|
|
data.insert(0, ('Interface', 'Bandwidth', 'State'))
|
|
print(list_to_markdown_table(data, align='left', seperator='!', borders=False))
|
|
|
|
print(f' |{"".join(perf_data)}')
|
|
sys.exit(exit_code)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
try:
|
|
main()
|
|
except Exception as e:
|
|
print(f'UNKNOWN: exception "{e}"')
|
|
print(traceback.format_exc())
|
|
sys.exit(nagios.UNKNOWN)
|