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# you can disable an alarm notification by setting the 'to' line to: silent
# Calculate the base trigger point for the load average alarms.
# This is the maximum number of CPU's in the system over the past 1
# minute, with a special case for a single CPU of setting the trigger at 2.
alarm: load_cpu_number
on: system.load
class: Utilization
type: System
component: Load
os: linux
hosts: *
calc: ($active_processors == nan or $active_processors == 0) ? (nan) : ( ($active_processors < 2) ? ( 2 ) : ( $active_processors ) )
units: cpus
every: 1m
info: number of active CPU cores in the system
# Send alarms if the load average is unusually high.
# These intentionally _do not_ calculate the average over the sampled
# time period because the values being checked already are averages.
alarm: load_average_15
on: system.load
class: Utilization
type: System
component: Load
os: linux
hosts: *
lookup: max -1m unaligned of load15
calc: ($load_cpu_number == nan) ? (nan) : ($this)
units: load
every: 1m
warn: ($this * 100 / $load_cpu_number) > (($status >= $WARNING) ? 175 : 200)
delay: down 15m multiplier 1.5 max 1h
info: system fifteen-minute load average
to: sysadmin
alarm: load_average_5
on: system.load
class: Utilization
type: System
component: Load
os: linux
hosts: *
lookup: max -1m unaligned of load5
calc: ($load_cpu_number == nan) ? (nan) : ($this)
units: load
every: 1m
warn: ($this * 100 / $load_cpu_number) > (($status >= $WARNING) ? 350 : 400)
delay: down 15m multiplier 1.5 max 1h
info: system five-minute load average
to: sysadmin
alarm: load_average_1
on: system.load
class: Utilization
type: System
component: Load
os: linux
hosts: *
lookup: max -1m unaligned of load1
calc: ($load_cpu_number == nan) ? (nan) : ($this)
units: load
every: 1m
warn: ($this * 100 / $load_cpu_number) > (($status >= $WARNING) ? 700 : 800)
delay: down 15m multiplier 1.5 max 1h
info: system one-minute load average
to: sysadmin
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