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# check if entropy is too low
# the alarm is checked every 1 minute
# and examines the last hour of data
alarm: lowest_entropy
on: system.entropy
os: linux
hosts: *
lookup: min -10m unaligned
units: entries
every: 5m
warn: $this < (($status >= $WARNING) ? (200) : (100))
delay: down 1h multiplier 1.5 max 2h
info: minimum entries in the random numbers pool in the last 10 minutes
to: silent
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