Displayed memory usage in RHEV-M is always 0%

Solution Verified - Updated -


  • Red Hat Enterprise Virtualization Manager (RHEV-M) 2.2, 3.0


  • Monitor and Virtual Machine tabs do not display used memory of virtual machine.


RHEV-M can display memory/network usage only according to the guest agent's reports. This utility is installed in a guest machine and reports information back to the RHEV-M and allows the VM to be powered down cleanly from the AdminPortal or UserPortal:

  • Windows guests: Install the RHEV tools setup. The setup iso should be placed in an ISO domain so that Windows guests can mount it as a virtual CD-ROM. For RHEV 2.2, it can be downloaded from Download the "Guest Tools ISO" and for RHEV 3.0 and above, install the rhev-guest-tools-iso package, then copy the files from /usr/share/rhev-guest-tools-iso to the ISO domain.
  • Linux guests: Install the appropriate version of rhevm-guest-agent for RHEL 5 and RHEL 6 as well.

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So, once again, saying RHEV "fully supports" RHEL3 & RHEL4 VMs is misleading... since there's no agent available for RHEL3 or RHEL4. I was wondering about this!

Hey Adam, I'm not sure I entirely follow your question here. This article doesn't mention RHEL 3 or 4 for the guest agent, only RHEL 5 and 6. Is there another article or document which states "full support" for RHEL3/4?

The product data sheet shows equal support for RHEL 3 through 6, that's the basis upon which we purchased RHEV, and we've found that not to be true at all - we would've been much better off implementing VMware in this particular regard.

Looks like the agent is support on RHEL v3 or higher.