Why does RHEV randomly not show any utilization and IP statistics for some VMs?

Solution Verified - Updated -

Issue

  • Hypervisors suddenly fail to monitor the rhev-agent status from all virtual machines running on them.
  • Cannot see Memory Usage of the Virtual Machine or the IP Address of the Virtual Machine from the RHEVM.
  • The issue is fixed by restarting the Hypervisor or by migrating the virtual machines to another hypervisor.
  • Why are VM IP addresses are not shown in RHEV, even thought the guest agent is installed ?
  • The "Enable WAN Options" checkbox on the Spice Console Options screen is no longer visible? What happened?

Environment

  • Red Hat Enterprise Virtualization (RHEV) 3.1
  • Host: vdsm-4.10.2-1.9 and earlier
  • Guest: RHEV Agent from RHEV Tools

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