1 files changed, 69 insertions, 0 deletions
diff --git a/health/health.d/tcp_resets.conf b/health/health.d/tcp_resets.conf
new file mode 100644
index 0000000..ff116db
--- /dev/null
+++ b/health/health.d/tcp_resets.conf
@@ -0,0 +1,69 @@
+
+# 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