Hello,
thank you for the KB-Post. The key for monitoring virtual machines with Vmotion is to add the Virtual Center Server as a device in PRTG, and then add the sensors for the virtual machines to this one (since the ESX(i)-Hosts simply cannot tell the sensor any information about VMs on other hosts). So we recommend to monitor the VMs via the vCenter-Server (as a device in PRTG), but the ESX(i)-Hosts directly as devices in PRTG.
We have seen cases where the vCenter-Server cached wrong hardware status information from ESX(i)-Hosts. Monitoring the ESX(i)-Hosts directly as devices in PRTG will avoid this. Also it helps a bit with load balancing of the SOAP-Requests.
best regards.
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