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# Ensure that Riak is running. template: riak_last_collected_secs
template: riak_last_collected_secs
on: riak.kv.throughput
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: dba
# Warn if a list keys operation is running.
template: riak_list_keys_active
on: riak.core.fsm_active
calc: $list_fsm_active
units: state machines
every: 10s
warn: $list_fsm_active > 0
info: number of currently running list keys finite state machines
to: dba
## Timing healthchecks
# KV GET
template: 1h_kv_get_mean_latency
on: riak.kv.latency.get
calc: $node_get_fsm_time_mean
lookup: average -1h unaligned of time
every: 30s
units: ms
info: mean average KV GET latency over the last hour
template: riak_kv_get_slow
on: riak.kv.latency.get
calc: $mean
lookup: average -3m unaligned of time
units: ms
every: 10s
warn: ($this > ($1h_kv_get_mean_latency * 2) )
crit: ($this > ($1h_kv_get_mean_latency * 3) )
info: average KV GET time over the last 3 minutes, compared to the average over the last hour
delay: down 5m multiplier 1.5 max 1h
to: dba
# KV PUT
template: 1h_kv_put_mean_latency
on: riak.kv.latency.put
calc: $node_put_fsm_time_mean
lookup: average -1h unaligned of time
every: 30s
units: ms
info: mean average KV PUT latency over the last hour
template: riak_kv_put_slow
on: riak.kv.latency.put
calc: $mean
lookup: average -3m unaligned of time
units: ms
every: 10s
warn: ($this > ($1h_kv_put_mean_latency * 2) )
crit: ($this > ($1h_kv_put_mean_latency * 3) )
info: average KV PUT time over the last 3 minutes, compared to the average over the last hour
delay: down 5m multiplier 1.5 max 1h
to: dba
## VM healthchecks
# Default Erlang VM process limit: 262144
# On systems observed, this is < 2000, but may grow depending on load.
template: riak_vm_high_process_count
on: riak.vm
calc: $sys_process_count
units: processes
every: 10s
warn: $this > 10000
crit: $this > 100000
info: number of processes running in the Erlang VM (the default limit on ERTS 10.2.4 is 262144)
to: dba
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