142 Appendix C. ProbesRequirements — The Red Hat Network Monitoring Daemon (rhnmd) must be running on the moni-tored system to execute this probe.Field ValueFile system* /dev/hda1Timeout* 15Critical Maximum File System Percent UsedWarning Maximum File System Percent UsedCritical Maximum Space UsedWarning Maximum Space UsedWarning Minimum Space AvailableCritical Minimum Space AvailableTable C-17. Linux::Disk Usage settingsC.5.4. Linux::InodesThe Linux::Inodes probe monitors the specified file system and collects the following metric:• Inodes — The percentage of inodes currently in use.An inode is a data structure holding information about files in a Linux file system. There is an inodefor each file, and a file is uniquely identified by the file system on which it resides and its inode numberon that system.Requirements — The Red Hat Network Monitoring Daemon (rhnmd) must be running on the moni-tored system to execute this probe.Field ValueFile system* /Timeout* 15Critical Maximum Inodes Percent UsedWarning Maximum Inodes Percent UsedTable C-18. Linux::Inodes settingsC.5.5. Linux::Interface TrafficThe Linux::Interface Traffic probe measures the amount of traffic into and out of the specified interface(such as eth0) and collects the following metrics:• Input Rate — The traffic in bytes per second going into the specified interface.• Output Rate — The traffic in bytes per second going out of the specified interface.Requirements — The Red Hat Network Monitoring Daemon (rhnmd) must be running on the moni-tored system to execute this probe.