diff options
Diffstat (limited to 'conf.d/health.d/net.conf')
| -rw-r--r-- | conf.d/health.d/net.conf | 97 |
1 files changed, 85 insertions, 12 deletions
diff --git a/conf.d/health.d/net.conf b/conf.d/health.d/net.conf index 7753aa18..924acccc 100644 --- a/conf.d/health.d/net.conf +++ b/conf.d/health.d/net.conf @@ -3,46 +3,119 @@ template: interface_last_collected_secs on: net.net +families: * calc: $now - $last_collected_t units: seconds ago every: 10s - warn: $this > (($status >= $WARNING) ? (0) : ( 5 * $update_every)) - crit: $this > (($status == $CRITICAL) ? (0) : (60 * $update_every)) + 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: sysadmin # ----------------------------------------------------------------------------- +# dropped packets # check if an interface is dropping packets # the alarm is checked every 1 minute -# and examines the last hour of data +# and examines the last 10 minutes of data -template: 1hour_packet_drops +template: inbound_packets_dropped on: net.drops - lookup: sum -1h unaligned absolute +families: * + lookup: sum -10m unaligned absolute of inbound units: packets every: 1m warn: $this > 0 - delay: down 30m multiplier 1.5 max 1h - info: interface dropped packets in the last hour + delay: down 1h multiplier 1.5 max 2h + info: interface inbound dropped packets in the last 10 minutes + to: sysadmin + +template: outbound_packets_dropped + on: net.drops +families: * + lookup: sum -10m unaligned absolute of outbound + units: packets + every: 1m + warn: $this > 0 + delay: down 1h multiplier 1.5 max 2h + info: interface outbound dropped packets in the last 10 minutes + to: sysadmin + +template: inbound_packets_dropped_ratio + on: net.packets +families: * + lookup: sum -10m unaligned absolute of received + calc: (($inbound_packets_dropped != nan AND $this > 0) ? ($inbound_packets_dropped * 100 / $this) : (0)) + units: % + every: 1m + warn: $this > 0.5 + crit: $this > 3 + delay: down 1h multiplier 1.5 max 2h + info: the ratio of inbound dropped packets vs the total number of received packets of the network interface, during the last 10 minutes + to: sysadmin + +template: outbound_packets_dropped_ratio + on: net.packets +families: * + lookup: sum -10m unaligned absolute of sent + calc: (($outbound_packets_dropped != nan AND $this > 0) ? ($outbound_packets_dropped * 100 / $this) : (0)) + units: % + every: 1m + warn: $this > 0.5 + crit: $this > 3 + delay: down 1h multiplier 1.5 max 2h + info: the ratio of outbound dropped packets vs the total number of sent packets of the network interface, during the last 10 minutes to: sysadmin # ----------------------------------------------------------------------------- +# FIFO errors # check if an interface is having FIFO # buffer errors # the alarm is checked every 1 minute -# and examines the last hour of data +# and examines the last 10 minutes of data -template: 1hour_fifo_errors +template: 10min_fifo_errors on: net.fifo - lookup: sum -1h unaligned absolute +families: * + lookup: sum -10m unaligned absolute units: errors every: 1m warn: $this > 0 - delay: down 30m multiplier 1.5 max 1h - info: interface fifo errors in the last hour + delay: down 1h multiplier 1.5 max 2h + info: interface fifo errors in the last 10 minutes 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: 1m_received_packets_rate + on: net.packets +families: * + lookup: average -1m of received + units: packets + every: 10s + info: the average number of packets received during the last minute + +template: 10s_received_packets_storm + on: net.packets +families: * + lookup: average -10s of received + calc: $this * 100 / (($1m_received_packets_rate < 1000)?(1000):($1m_received_packets_rate)) + every: 10s + units: % + warn: $this > (($status >= $WARNING)?(200):(1000)) + crit: $this > (($status >= $WARNING)?(1000):(2000)) + info: the % of the rate of received packets in the last 10 seconds, compared to the rate of the last minute + to: silent + |