Host properties

The cluster management console displays both static and dynamic host properties in a separate window. You can have up to four Host Properties windows open simultaneously to compare and monitor hosts.

Some of the most useful dynamic host properties are also displayed in chart form on the Charts tab.

Host properties and descriptions are listed in the following table. Note the different host attributes associated with a property type:
  • Built-in: The host property name and definition are pre-configured and built-in to EGO. Names and definitions cannot be changed.
  • Reserved: The property name is built-in to EGO, and is reserved. A reserved host attribute must be configured explicitly using this name. Definitions are configurable.
  • External: Names and definitions are completely configurable. They do not appear on the Host Properties page.
Table 1. Host properties and descriptions
Property Description Attribute type
Host Name Name of the host. Built-in
Status Current state of the host: OK, Unavailable, or Closed. Built-in
Type (Host Type) Type of host you have. For example, LINUX64. Built-in
CPUs (Number of CPUs) Number of ncpus you have specified for your host. Built-in
CPU Util Current CPU utilization of your host in %. Built-in
Mem (Available Memory) Estimate of the real memory currently available to user processes. This represents the approximate size of the largest process that could be started on a host without causing the host to start paging. Built-in
Swap (Available Swap) Virtual memory (swap space) in MB currently available. Built-in
Pg (Paging Rate) Virtual memory paging rate in pages per second. This index is closely tied to the amount of available memory and the total size of the processes running on a host; if there is not enough memory to satisfy all processes, the paging rate is high. Built-in
I/O (Disk I/O Rate) I/O throughput to disks attached directly to this host, in KB per second. This rate does not include I/O to disks that are mounted from other hosts. Note also that disk I/O monitoring does not support removable disks. Built-in
Total Slots (Total Number of Slots) Total number of slots for this host across all resource groups. Built-in
Free Slots (Number of Free Slots) Current number of available slots for this host across all resource groups. Built-in
Host Close Comment Comment associated with closing the host, if applicable. Built-in
Resource group Resource groups that the host belongs to. Built-in
nprocs Number of physical processors (if ncpus is defined as procs, then ncpus=nprocs). Built-in
ncores Number of cores per processor (if ncpus is defined as cores, then ncpus=nprocs x ncores). Built-in
nthreads Number of threads per core (if ncpus is defined as threads, then ncpus=nprocs x ncores x nthreads). Built-in
processes Number of processes running on the host Built-in
diskread Speed of a hard-disk read operation per second. Built-in
diskwrite Speed of a hard-disk write operation per second. Built-in
netread Speed of a network read operation per second. Built-in
netwrite Speed of a network write operation per second. Built-in
serverType The host type. Valid values: dynamic (host dynamically joined the cluster) or static (host defined in ego.cluster.clustername file). Built-in
15s Load (15-Second Load) Load this host carries, averaged over the last 15 seconds. The load is the average number of processes using the CPU during a given time interval. Built-in
15m Load (15-Minute Load) Load this host carries, averaged over the last 15 minutes. The load is the average number of processes using the CPU during a given time interval. Built-in
1m Load (1-Minute Load) Load this host carries, averaged over the last minute. The load is the average number of processes using the CPU during a given time interval. Built-in
Model (Host Model) Model of your host. For example, Intel_EM64T. Built-in
Process Priority OS process priority of cluster workloads (normal or lowest). Built-in
Host Status Reason Reason for the current host status, if applicable. Built-in
CPU Factor Speed of the host’s CPU relative to other hosts in the cluster. If one processor is twice the speed of another, its CPU factor should be twice as large. The CPU factors are defined by the administrator. For multiprocessor hosts, the CPU factor is the speed of a single processor; the system automatically scales the host CPU load to account for additional processors. Built-in
Max Mem Maximum RAM available. Built-in
Max Swap Maximum swap space on your host. Built-in
Temp (Available Temp) Space available in MB on the file system that contains the temporary directory. Built-in
Max Temp Maximum space in /tmp (Linux®) or OS default temp directory (Windows). Built-in
Disks Number of local disks on your host. Built-in
User Idle Time Amount of time in minutes that a host has been idle. On a Linux host, it is the amount of time since the keyboard has been touched on all logged-in sessions. On a Windows host, it is the amount of time a screen saver has been active.

Be aware that the value displayed may vary from the actual value (less than 1/1024th of the actual value).

 Built-in
Users (Login Users) Number of current users logged in to the system. Built-in
Resource Attr Resource attributes assigned to this host. For example, "mg" indicates the host is a management host; "scvg" indicates the host is harvest-ready. Built-in
CPU Speed Speed of each individual CPU in MHz. Built-in
Band Width Maximum bandwidth requirement in Mbps. Built-in
Docker Whether Docker is installed and active on the host. The Docker host status can be:
  • NotInstalled: The Docker package is not installed on the host.
  • DaemonDown: The Docker package is installed, however, the Docker daemon is not running on the host.
  • NotSupportedVersion: The Docker package is installed and the Docker daemon is running on the host; however, the Docker daemon version is earlier than the supported version.
  • Docker_version: The Docker package is installed, the Docker daemon is running on the host, and the Docker daemon version is equal or higher than the supported version. For example, the value can be 1.9.1 or 1.10.0-dev (developer version).
 Built-in
Cloud Provider When cloud bursting is enabled through host factory, name of the cloud service provider that the host belongs to. A host in your on-premises cluster is indicated by a dash (-). Built-in
Harvesting Control When host harvesting is enabled and the harvesting agent is controlling this host, value is on. Reserved
User idle time threshold User idle time threshold, in minutes; configurable external attribute. Reserved
CPU idle time Amount of time in minutes that a CPU has been idle. Reserved
CPU idle time threshold CPU idle time threshold, in minutes. Reserved
Adjusted CPU utilization threshold The user-defined threshold applied to the Adjusted CPU Utilization. The threshold is used as a trigger for host harvesting. Reserved
Adjusted CPU utilization The CPU utilization of the host without considering the CPU utilization of the specified exempt processes. Reserved
Exempt Processes Processes that are excluded from the calculation of Adjusted CPU Utilization. Reserved
Close processes Processes that, if running, will close the host. Reserved
Host release mode Release mode of the current harvestable host. Valid values: Fast release, Release with grace period. Reserved