Check manual page of tcp_conn_stats

tcp_conn_stats

Author: Mathias Kettner

License: GPL

Distribution: official part of Check_MK

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.

Check parameters

Parameter	Type	Description
levels	dict from string to (int, int)	A python dictionary from check state to a pair of integers for warning and critical levels. For state types not listed in the dictionary no state check is done. The default parameter is an empty dictionary, which makes this check always OK.

Performance data

One variable for each of the state types listed in the description (which are ten).

Inventory

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.

Configuration variables

Variable	Type	Description
tcp_conn_stats_default_levels	dict from string to (int, int)	default levels used for all inventorized checks.

Examples

# set levels for TIME_WAIT and ESTABLISHED
tcp_conn_stats_default_levels = { "TIME_WAIT" : (20, 50), "ESTABLISHED" : (100, 200) }