bundlewrap/bundles/sshmon/files/check_cpu_stats

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#!/usr/bin/env python3
from re import findall
from subprocess import check_output
from sys import exit
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ITERATIONS = 10
try:
top_output = None
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top_output = check_output(rf"top -b -n{ITERATIONS} -d1 | grep -i '^%cpu'", shell=True).decode('UTF-8')
cpu_usage = {}
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for value, identifier in findall(r'([0-9\.\,]{3,5}) ([a-z]{2})', top_output):
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if identifier not in cpu_usage:
cpu_usage[identifier] = 0.0
cpu_usage[identifier] += float(value.replace(',', '.'))
output = []
for identifier, value_added in cpu_usage.items():
value = value_added / ITERATIONS
output.append(f"{value:.2f} {identifier}")
cpu_usage[identifier] = value
print(f"Average over {ITERATIONS} seconds: " + ", ".join(output))
warn = set()
crit = set()
# steal
if cpu_usage['st'] > 10:
crit.add('CPU steal is {}% (>10%)'.format(cpu_usage['st']))
elif cpu_usage['st'] > 5:
warn.add('CPU steal is {}% (>5%)'.format(cpu_usage['st']))
# iowait
if cpu_usage['wa'] > 60:
crit.add('IOwait is {}% (>60%)'.format(cpu_usage['wa']))
elif cpu_usage['wa'] > 30:
warn.add('IOwait is {}% (>30%)'.format(cpu_usage['wa']))
total_usage = cpu_usage['us'] + cpu_usage['sy']
if total_usage > 90:
crit.add('Total CPU usage is {:.1f}% ({}% user, {}% system, >90%)'.format(
total_usage,
cpu_usage['us'],
cpu_usage['sy'],
))
elif total_usage > 80:
warn.add('Total CPU usage is {:.1f}% ({}% user, {}% system > 80%)'.format(
total_usage,
cpu_usage['us'],
cpu_usage['sy'],
))
for line in sorted(crit):
print(line)
for line in sorted(warn):
print(line)
if crit:
exit(2)
elif warn:
exit(1)
else:
exit(0)
except Exception as e:
print(repr(e))
exit(3)