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# check if entropy is too low
# the alarm is checked every 1 minute
# and examines the last 30 minutes of data
alarm: min_30min_entropy
on: system.entropy
lookup: min -30m unaligned
every: 1m
warn: $this < 200
crit: $this < 100
units: entries
info: minimum entries in the random numbers pool (entropy), for the last 30 minutes
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