diff options
Diffstat (limited to 'conf.d/health.d/tcp_resets.conf')
| -rw-r--r-- | conf.d/health.d/tcp_resets.conf | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/conf.d/health.d/tcp_resets.conf b/conf.d/health.d/tcp_resets.conf new file mode 100644 index 00000000..8e93c479 --- /dev/null +++ b/conf.d/health.d/tcp_resets.conf @@ -0,0 +1,32 @@ +# ----------------------------------------------------------------------------- + + alarm: ipv4_tcphandshake_last_collected_secs + on: ipv4.tcphandshake + 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)) + delay: up 0 down 5m multiplier 1.5 max 1h + info: number of seconds since the last successful data collection + to: sysadmin + +# ----------------------------------------------------------------------------- + + alarm: 1m_ipv4_tcp_resets + on: ipv4.tcphandshake + lookup: average -1m at -10s unaligned absolute of OutRsts + units: tcp resets/s + every: 10s + info: average TCP RESETS this host is sending, over the last minute + + alarm: 10s_ipv4_tcp_resets + on: ipv4.tcphandshake + lookup: average -10s unaligned absolute of OutRsts + units: tcp resets/s + every: 10s + warn: $this > ((($1m_ipv4_tcp_resets < 5)?(5):($1m_ipv4_tcp_resets)) * (($status >= $WARNING) ? (1) : (4))) + delay: up 0 down 60m multiplier 1.2 max 2h + info: average TCP RESETS this host is sending, over the last 10 seconds (this can be an indication that a port scan is made, or that a service running on this host has crashed) + to: sysadmin + |