158 Appendix C. Probes
Field Value
Critical Maximum CLOSE_WAIT Connections
Warning Maximum CLOSE_WAIT Connections
Critical Maximum FIN_WAIT Connections
Warning Maximum FIN_WAIT Connections
Critical Maximum ESTABLISHED Connections
Warning Maximum ESTABLISHED Connections
Critical Maximum SYN_RCVD Connections
Warning Maximum SYN_RCVD Connections
Table C-27. Linux::TCP Connections by State settings
C.5.14. Linux::Users
The Linux::Users probe monitors the users of a system and reports the following metric:
• Users — The number of users currently logged in.
Requirements — The Red Hat Network Monitoring Daemon (rhnmd) must be running on the moni-
tored system to execute this probe.
Field Value
Timeout* 15
Critical Maximum Users
Warning Maximum Users
Table C-28. Linux::Users settings
C.5.15. Linux::Virtual Memory
The Linux::Virtual Memory probe monitors the total system memory and collects the following met-
ric:
• Virtual Memory — The percent of total system memory - random access memory (RAM) plus
swap - that is 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 Virtual Memory Free
Critical Minimum Virtual Memory Free
Table C-29. Linux::Virtual Memory settings
