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-rw-r--r--health/health.d/tcp_resets.conf69
1 files changed, 69 insertions, 0 deletions
diff --git a/health/health.d/tcp_resets.conf b/health/health.d/tcp_resets.conf
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+
+# you can disable an alarm notification by setting the 'to' line to: silent
+
+# -----------------------------------------------------------------------------
+# tcp resets this host sends
+
+ alarm: 1m_ipv4_tcp_resets_sent
+ on: ipv4.tcphandshake
+ class: Errors
+ type: System
+component: Network
+ os: linux
+ hosts: *
+ lookup: average -1m at -10s unaligned absolute of OutRsts
+ units: tcp resets/s
+ every: 10s
+ info: average number of sent TCP RESETS over the last minute
+
+ alarm: 10s_ipv4_tcp_resets_sent
+ on: ipv4.tcphandshake
+ class: Errors
+ type: System
+component: Network
+ os: linux
+ hosts: *
+ lookup: average -10s unaligned absolute of OutRsts
+ units: tcp resets/s
+ every: 10s
+ warn: $netdata.uptime.uptime > (1 * 60) AND $this > ((($1m_ipv4_tcp_resets_sent < 5)?(5):($1m_ipv4_tcp_resets_sent)) * (($status >= $WARNING) ? (1) : (10)))
+ delay: up 20s down 60m multiplier 1.2 max 2h
+ options: no-clear-notification
+ info: average number of sent TCP RESETS over the last 10 seconds. \
+ This can indicate a port scan, \
+ or that a service running on this host has crashed. \
+ Netdata will not send a clear notification for this alarm.
+ to: sysadmin
+
+# -----------------------------------------------------------------------------
+# tcp resets this host receives
+
+ alarm: 1m_ipv4_tcp_resets_received
+ on: ipv4.tcphandshake
+ class: Errors
+ type: System
+component: Network
+ os: linux freebsd
+ hosts: *
+ lookup: average -1m at -10s unaligned absolute of AttemptFails
+ units: tcp resets/s
+ every: 10s
+ info: average number of received TCP RESETS over the last minute
+
+ alarm: 10s_ipv4_tcp_resets_received
+ on: ipv4.tcphandshake
+ class: Errors
+ type: System
+component: Network
+ os: linux freebsd
+ hosts: *
+ lookup: average -10s unaligned absolute of AttemptFails
+ units: tcp resets/s
+ every: 10s
+ warn: $netdata.uptime.uptime > (1 * 60) AND $this > ((($1m_ipv4_tcp_resets_received < 5)?(5):($1m_ipv4_tcp_resets_received)) * (($status >= $WARNING) ? (1) : (10)))
+ delay: up 20s down 60m multiplier 1.2 max 2h
+ options: no-clear-notification
+ info: average number of received TCP RESETS over the last 10 seconds. \
+ This can be an indication that a service this host needs has crashed. \
+ Netdata will not send a clear notification for this alarm.
+ to: sysadmin