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Currently, the installer sets VMs to High-Performance profile (default) by creating them with the High-Performance profile in terraform, but the terraform provide doesn't set up the same parameters as setting up High-Performance in the UI. PR[1] aligns the terraform code with what the ovirt UI is doing when enabling High-Performance, meaning configures: - CPU host passthrough - Disable ballooning - Enable serial console - Make the VM headless That means that when setting a VM to High-Performance will cause the following: 1. Making the VM headless and enabling serial console will allow getting the VM screen but not using RHV UI, meaning it will be harder to debug if the VM crashes at an early stage... that is ok because VMs are cattle not pets in OCP. Benefit - performance of the VM 2. Do to a bug in oVirt, mem stats will not be reported in RHV UI. All that for better performance We need to basically rebase on [1] once it is merged Platform: oVirt How to reproduce it: Install a cluster with the VMs on High performance and see the flags of the create VMs [1] https://github.com/oVirt/terraform-provider-ovirt/pull/236
*** Bug 1848922 has been marked as a duplicate of this bug. ***
version: rhv- 4.4.4.7-0.1 ocp -4.7.0-0.nightly-2021-01-31-023653 steps: 1) Install a cluster with the VMs on High performance for master and worker node 2) verify that special configuration implements on rhv UI for worker and master node special configuration: CPU host passthrough - Disable ballooning - Enable serial console - Make the VM headless actual: when installing vms with High Performance, special configuration implement only for master node
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (Moderate: OpenShift Container Platform 4.7.0 security, bug fix, and enhancement update), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHSA-2020:5633