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-rw-r--r--health/health.d/tcp_conn.conf23
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diff --git a/health/health.d/tcp_conn.conf b/health/health.d/tcp_conn.conf
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+
+#
+# ${tcp_max_connections} may be nan or -1 if the system
+# supports dynamic threshold for TCP connections.
+# In this case, the alarm will always be zero.
+#
+
+ alarm: tcp_connections
+ on: ip.tcpsock
+ class: Workload
+ type: System
+component: Network
+ os: linux
+ hosts: *
+ calc: (${tcp_max_connections} > 0) ? ( ${connections} * 100 / ${tcp_max_connections} ) : 0
+ units: %
+ every: 10s
+ warn: $this > (($status >= $WARNING ) ? ( 60 ) : ( 80 ))
+ crit: $this > (($status == $CRITICAL) ? ( 80 ) : ( 90 ))
+ delay: up 0 down 5m multiplier 1.5 max 1h
+ summary: System TCP connections utilization
+ info: IPv4 TCP connections utilization
+ to: sysadmin