Appendix C. Probes 151Field ValueTimeout* 15Critical Maximum CPU Percent UsedWarning Maximum CPU Percent UsedTable C-15. Linux::CPU Usage settingsC.5.2. Linux::Disk IO ThroughputThe Linux::Disk IO Throughput probe monitors a given disk and collects the following metric:• Read Rate — The amount of data that is read in kilobytes per second.• Write Rate — The amount of data that is written in kilobytes per second.To obtain the value for the required Disk number or disk name field, run iostat on the system tobe monitored and see what name has been assigned to the disk you desire. The default value of 0 willusually give you statistics from the first hard drive connected directly to the system.Requirements — The Red Hat Network Monitoring Daemon (rhnmd) must be running on the mon-itored system to execute this probe. Also, the Disk number or disk name parameter must matchthe format that is seen when the iostat command is run on the commandline. If the format is notidentical, the configured probe will go into an UNKNOWN state.Field ValueDisk number or disk name* 0Timeout* 15Critical Maximum KB read/secondWarning Maximum KB read/secondWarning Minimum KB read/secondCritical Minimum KB read/secondCritical Maximum KB written/secondWarning Maximum KB written/secondWarning Minimum KB written/secondCritical Minimum KB written/secondTable C-16. Linux::Disk IO Throughput settingsC.5.3. Linux::Disk UsageThe Linux::Disk Usage probe monitors the disk space on a specific file system and collects the fol-lowing metrics:• File System Used — The percentage of the file system currently in use.• Space Used — The amount of the file system in megabytes currently in use.• Space Available — The amount of the file system in megabytes currently available.
