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File: //proc/thread-self/root/lib/netdata/conf.d/health.d/ping.conf
# you can disable an alarm notification by setting the 'to' line to: silent

 template: ping_host_reachable
       on: ping.host_packet_loss
    class: Errors
     type: Other
component: Network
   lookup: average -30s unaligned of loss
     calc: ($this == nan) ? (nan) : ($this < 100)
    units: up/down
    every: 10s
     crit: $this == 0
    delay: down 30m multiplier 1.5 max 2h
  summary: Host ${label:host} ping status
     info: Network host ${label:host} reachability status
       to: sysadmin

 template: ping_packet_loss
       on: ping.host_packet_loss
    class: Errors
     type: Other
component: Network
   lookup: average -10m unaligned of loss
    green: 5
      red: 10
    units: %
    every: 10s
     warn: $this > $green
     crit: $this > $red
    delay: down 30m multiplier 1.5 max 2h
  summary: Host ${label:host} ping packet loss
     info: Packet loss percentage to the network host ${label:host} over the last 10 minutes
       to: sysadmin

 template: ping_host_latency
       on: ping.host_rtt
    class: Latency
     type: Other
component: Network
   lookup: average -10s unaligned of avg
    units: ms
    every: 10s
    green: 500
      red: 1000
     warn: $this > $green OR $max > $red
     crit: $this > $red
    delay: down 30m multiplier 1.5 max 2h
  summary: Host ${label:host} ping latency
     info: Average latency to the network host ${label:host} over the last 10 seconds
       to: sysadmin