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For more information about Foglight for Infrastructure, see the following topics:
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MONITORED. This is the default state. It is set on the Host object for each successful collection topology submission. |
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UNMONITORED. It is set on the Host object when the agent fails to authenticate, or is otherwise unable to connect to the monitored host. |
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UNAVAILABLE. It is set on the Host object when agent is configured to validate host availability with ping (by setting the Use ping to validate host availability property for that agent to “True”), and a ping command is unsuccessful. For details about configuring agent properties, see About the WindowsAgent, About the UnixAgentPlus, About the UnixAgent, and About the MultiHostProcessMonitorAgent. |
NOTE: When the Use ping to validate host availability property is enabled on a UNIX® platform, the sudoer file needs to configured to allow the ICMP process to run with NOPASSWD. |
There are a number of reasons why the reported infrastructure metrics for a virtual host are not as accurate as those of the virtualization cartridge. A guest OS can only identify the virtual hardware resources allocated to the virtual machine on which it is installed and not the actual total physical hardware resources available to the system. Also, the hypervisor adds overhead which manifests in the reported metrics as increased utilization. For more information, see CPU usage of an application differs in virtual machines compared to physical machines (2032).
The following virtualization cartridges are recommended for monitoring virtual hosts:
It allows you to determine potential bottlenecks in your system’s performance.
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