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# you can disable an alarm notification by setting the 'to' line to: silent
alarm: netfilter_last_collected_secs
on: netfilter.conntrack_sockets
os: linux
hosts: *
calc: $now - $last_collected_t
units: seconds ago
every: 10s
warn: $this > (($status >= $WARNING) ? ($update_every) : ( 5 * $update_every))
crit: $this > (($status == $CRITICAL) ? ($update_every) : (60 * $update_every))
delay: down 5m multiplier 1.5 max 1h
info: number of seconds since the last successful data collection
to: sysadmin
alarm: netfilter_conntrack_full
on: netfilter.conntrack_sockets
os: linux
hosts: *
lookup: max -10s unaligned of connections
calc: $this * 100 / $netfilter_conntrack_max
units: %
every: 10s
warn: $this > (($status >= $WARNING) ? (70) : (80))
crit: $this > (($status == $CRITICAL) ? (80) : (90))
delay: down 5m multiplier 1.5 max 1h
info: the number of connections tracked by the netfilter connection tracker, as a percentage of the connection tracker table size
to: sysadmin
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