Check manual page of tcp_conn_stats

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Number of TCP connections per state

Distribution: official part of Check_MK
License: GPL
Supported Agents: Linux

This check monitors the number of TCP connections in the various possible states, which are: ESTABLISHED, SYN_SENT, SYN_RECV, LAST_ACK, CLOSE_WAIT, TIME_WAIT, CLOSED, CLOSING, FIN_WAIT1, FIN_WAIT2.


If there is at least one TCP connection, then one check will be created. On agents supporting tcp_conn_stats this should always be the case since at least the connection to the agent should be shown.