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# make sure we are sending data to backend
alarm: backend_last_buffering
on: netdata.backend_metrics
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 * $update_every))
delay: down 5m multiplier 1.5 max 1h
info: number of seconds since the last successful buffering of backend data
to: dba
alarm: backend_metrics_sent
on: netdata.backend_metrics
units: %
calc: abs($sent) * 100 / abs($buffered)
every: 10s
warn: $this != 100
delay: down 5m multiplier 1.5 max 1h
info: percentage of metrics sent to the backend server
to: dba
alarm: backend_metrics_lost
on: netdata.backend_metrics
units: metrics
calc: abs($lost)
every: 10s
crit: $this != 0
delay: down 5m multiplier 1.5 max 1h
info: number of metrics lost due to repeating failures to contact the backend server
to: dba
# this chart has been removed from netdata
# alarm: backend_slow
# on: netdata.backend_latency
# units: %
# calc: $latency * 100 / ($update_every * 1000)
# every: 10s
# warn: $this > 50
# crit: $this > 100
# delay: down 5m multiplier 1.5 max 1h
# info: the percentage of time between iterations needed by the backend time to process the data sent by netdata
# to: dba