Managing Virtual Machines with Red Hat OpenShift Virtualization

In Red Hat OpenShift Virtualization, a VM object defines the template to create a VMI, which is the running instance of the VM inside your cluster.

You can attach a persistent volume to a VMI by defining a PVC, to represent a request for a specific storage resource.

To list all VMIs in a cluster, use the oc get vmis command.

You can troubleshoot a VM by using the virsh command from within the VM’s virt-launcher pod and its libvirtd container.

Cluster administrators access the Observe → Dashboard interface to analyze VM metrics such as CPU utilization, memory utilization, and top VM resource consumers.

Cluster administrators access the Observe → Metrics interface to run Prometheus Query Language (PromQL) queries that examine information about the cluster and user-defined workloads as a dashboard or graph.

Cluster administrators can access all projects for monitoring, and developer users can access projects where they have at least view role permissions.

Default templates enable a basic installation with useful settings, and you can make changes according to your VM’s requirements.

From a VM’s management page, you can perform administrative operations, such as starting and stopping a VM, getting information about your VM, accessing the VM through a console, and adding new disks and network interfaces.

Default templates include Red Hat Enterprise Linux, CentOS, Fedora, and Microsoft Windows Server. You can also install other operating systems, such as Ubuntu or openSUSE, by installing the KubeVirt common templates package in your OpenShift cluster.