Red Hat NETWORK 3.6 - Technical Information Seite 159

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Appendix C. Probes 147
Swap Free — The percent of swap memory currently free.
Requirements The Red Hat Network Monitoring Daemon (rhnmd) must be running on the moni-
tored system to execute this probe.
Field Value
Timeout* 15
Warning Minimum Swap Free
Critical Minimum Swap Free
Table C-26. Linux::Swap Usage settings
C.5.13. Linux::TCP Connections by State
The Linux::TCP Connections by State probe identifies the total number of TCP connections, as well
as the quantity of each in the following states:
TIME_WAIT The socket is waiting after close for remote shutdown transmission so it may
handle packets still in the network.
CLOSE_WAIT — The remote side has been shut down and is now waiting for the socket to close.
FIN_WAIT — The socket is closed, and the connection is now shutting down.
ESTABLISHED — The socket has a connection established.
SYN_RCVD — The connection request has been received from the network.
Requirements The Red Hat Network Monitoring Daemon (rhnmd) must be running on the moni-
tored system to execute this probe.
Field Value
Local IP address filter pattern list
Local port number filter
Remote IP address filter pattern list
Remote port number filter
Timeout* 15
Critical Maximum Total Connections
Warning Maximum Total Connections
Critical Maximum TIME_WAIT Connections
Warning Maximum TIME_WAIT Connections
Critical Maximum CLOSE_WAIT Connections
Warning Maximum CLOSE_WAIT Connections
Critical Maximum FIN_WAIT Connections
Warning Maximum FIN_WAIT Connections
Critical Maximum ESTABLISHED Connections
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