141 lines
3.2 KiB
Python
Executable File
141 lines
3.2 KiB
Python
Executable File
#!/usr/bin/env python3
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import re
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import subprocess
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import sys
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import textwrap
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'''
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=head1 NAME
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timesync_status - monitor ntp status with systemd-timesyncd
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=head1 APPLICABLE SYSTEMS
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All systems using systemd-timesyncd as its NTP-client. However, this
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plugin itself also needs Python 3.5+ to call subprocess.run.
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=head1 CONFIGURATION
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This plugin should work out-of-the-box with autoconf. It does expect
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timedatectl to be on $PATH, but that should always be the case in a
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normal system.
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=head1 INTERPRETATION
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This plugin shows a graph with one line for every NTP metric it measure.
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Metrics are shown with their usual name, and are explained in their
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respective info fields.
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This plugin issues no warnings or critical states.
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=head1 MAGIC MARKERS
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#%# family=auto
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#%# capabilities=autoconf
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=head1 VERSION
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1.0
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=head1 AUTHOR
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Bert Peters <bert@bertptrs.nl>
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=head1 LICENSE
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GNU General Public License v2.0 only
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SPDX-License-Identifier: LGPL-2.0-only
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=cut
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'''
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def parse_time(value):
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value = value.strip()
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if ' ' in value:
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return sum(parse_time(x) for x in value.split(' '))
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match = re.match(r'^([+-]?[0-9.]+)([a-z]+)$', value)
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if not match:
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raise ValueError('Invalid time ' + value)
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value = float(match.group(1))
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suffix = match.group(2)
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if suffix == 'min':
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value *= 60
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elif suffix == 'ms':
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value /= 1000
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elif suffix == 'us':
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value /= 1e6
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return value
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def parse_response(data):
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values = {}
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for line in data.splitlines():
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k, v = line.split(': ', 1)
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values[k.strip()] = v.strip()
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return values
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def retrieve():
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result = subprocess.run(['timedatectl', 'timesync-status'], capture_output=True)
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if result.returncode != 0:
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sys.exit('timedatectl failed')
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output = result.stdout.decode('utf-8')
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values = parse_response(output)
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print('offset.value', parse_time(values['Offset']))
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print('delay.value', parse_time(values['Delay']))
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print('delay.extinfo', 'Server', values['Server'])
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print('jitter.value', parse_time(values['Jitter']))
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print('poll.value', parse_time(values['Poll interval'].split('(')[0]))
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def autoconf():
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result = subprocess.run(['timedatectl', 'status'], capture_output=True)
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if result.returncode != 0:
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print('no (failed to run timedatectl)')
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return
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values = parse_response(result.stdout.decode('utf-8'))
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if values['NTP service'] == 'active':
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print('yes')
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else:
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print('no (ntp service not running)')
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def config():
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print(textwrap.dedent('''\
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graph_title Timesync status
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graph_vlabel s
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graph_category time
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offset.label Offset
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offset.info Time difference between source and local
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delay.label Delay
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delay.info Roundtrip time to the NTP-server
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jitter.label Jitter
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jitter.info Difference in offset between two subsequent samples
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poll.label Polling time
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poll.info Time between two subsequent NTP-polls
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'''))
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if __name__ == '__main__':
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if len(sys.argv) == 1:
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retrieve()
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elif sys.argv[1] == 'config':
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config()
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elif sys.argv[1] == 'autoconf':
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autoconf()
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