60 lines
1.3 KiB
Python
60 lines
1.3 KiB
Python
#!/usr/bin/env python3
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from subprocess import check_output
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from sys import exit
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CONVERSIONS = [
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('ns', 1/1000000),
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('us', 1/1000),
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('ms', 1),
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('s', 1000),
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]
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try:
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in_sync = check_output(
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"timedatectl status | grep -iF 'system clock synchronized' | cut -d: -f2",
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shell=True,
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).strip().decode()
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if in_sync.lower() != 'yes':
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print(f'systemd-timesyncd reports sync status: {in_sync}')
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exit(2)
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out = check_output(
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"timedatectl timesync-status | grep -iF offset | cut -d: -f2",
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shell=True,
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).strip().decode()
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if not out:
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print('NTP service is active, but could not get offset. Something is wrong.')
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exit(1)
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if out in ('+0', '-0', '0'):
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# if the offset is exactly zero, timedatectl only shows '0', thus
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# breaking the logic below.
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out = '0ms'
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if out.startswith('+'):
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out = out[1:]
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offset = None
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for unit, factor in CONVERSIONS:
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if out.endswith(unit):
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offset = float(out[:(len(unit)*-1)])
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offset = offset * factor
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break
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else:
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raise ValueError(out)
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print(f'Sync offset is {round(offset, 2)} ms')
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if -50 < offset < 50:
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exit(0)
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elif -100 < offset < 100:
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exit(1)
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else:
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exit(2)
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except Exception as e:
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print(repr(e))
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exit(3)
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