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# you can disable an alarm notification by setting the 'to' line to: silent
template: cgroup_10min_cpu_usage
on: cgroup.cpu_limit
class: Utilization
type: Cgroups
component: CPU
os: linux
hosts: *
lookup: average -10m unaligned
units: %
every: 1m
warn: $this > (($status >= $WARNING) ? (75) : (85))
crit: $this > (($status == $CRITICAL) ? (85) : (95))
delay: down 15m multiplier 1.5 max 1h
info: average cgroup CPU utilization over the last 10 minutes
to: sysadmin
template: cgroup_ram_in_use
on: cgroup.mem_usage
class: Utilization
type: Cgroups
component: Memory
os: linux
hosts: *
calc: ($ram) * 100 / $memory_limit
units: %
every: 10s
warn: $this > (($status >= $WARNING) ? (80) : (90))
crit: $this > (($status == $CRITICAL) ? (90) : (98))
delay: down 15m multiplier 1.5 max 1h
info: cgroup memory utilization
to: sysadmin
# -----------------------------------------------------------------------------
# check for packet storms
# 1. calculate the rate packets are received in 1m: 1m_received_packets_rate
# 2. do the same for the last 10s
# 3. raise an alarm if the later is 10x or 20x the first
# we assume the minimum packet storm should at least have
# 10000 packets/s, average of the last 10 seconds
template: cgroup_1m_received_packets_rate
on: cgroup.net_packets
class: Workload
type: Cgroups
component: Network
hosts: *
lookup: average -1m unaligned of received
units: packets
every: 10s
info: average number of packets received by the network interface $family over the last minute
template: cgroup_10s_received_packets_storm
on: cgroup.net_packets
class: Workload
type: Cgroups
component: Network
hosts: *
lookup: average -10s unaligned of received
calc: $this * 100 / (($1m_received_packets_rate < 1000)?(1000):($1m_received_packets_rate))
every: 10s
units: %
warn: $this > (($status >= $WARNING)?(200):(5000))
crit: $this > (($status == $CRITICAL)?(5000):(6000))
options: no-clear-notification
info: ratio of average number of received packets for the network interface $family over the last 10 seconds, \
compared to the rate over the last minute
to: sysadmin
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