Learn Kubernetes Basics

Get Started

Ready to get your hands dirty? Build a simple Kubernetes cluster that runs "Hello World" for Node.js.

Documentation

Learn how to use Kubernetes with conceptual, tutorial, and reference documentation. You can even help contribute to the docs!

Blog

Read the latest news for Kubernetes and the containers space in general, and get technical how-tos hot off the presses.

Interested in hacking on the core Kubernetes code base?

View On GitHub

Explore the community

Getting started

Kubernetes v1.15 documentation is no longer actively maintained. The version you are currently viewing is a static snapshot. For up-to-date documentation, see the latest version.

Edit This Page

oVirt

oVirt is a virtual datacenter manager that delivers powerful management of multiple virtual machines on multiple hosts. Using KVM and libvirt, oVirt can be installed on Fedora, CentOS, or Red Hat Enterprise Linux hosts to set up and manage your virtual data center.

oVirt Cloud Provider Deployment
Using the oVirt Cloud Provider
oVirt Cloud Provider Screencast
Support Level

oVirt Cloud Provider Deployment

The oVirt cloud provider allows to easily discover and automatically add new VM instances as nodes to your Kubernetes cluster. At the moment there are no community-supported or pre-loaded VM images including Kubernetes but it is possible to import or install Project Atomic (or Fedora) in a VM to generate a template. Any other distribution that includes Kubernetes may work as well.

It is mandatory to install the ovirt-guest-agent in the guests for the VM ip address and hostname to be reported to ovirt-engine and ultimately to Kubernetes.

Once the Kubernetes template is available it is possible to start instantiating VMs that can be discovered by the cloud provider.

Using the oVirt Cloud Provider

The oVirt Cloud Provider requires access to the oVirt REST-API to gather the proper information, the required credential should be specified in the ovirt-cloud.conf file:

[connection]
uri = https://localhost:8443/ovirt-engine/api
username = admin@internal
password = admin

In the same file it is possible to specify (using the filters section) what search query to use to identify the VMs to be reported to Kubernetes:

[filters]
# Search query used to find nodes
vms = tag=kubernetes

In the above example all the VMs tagged with the kubernetes label will be reported as nodes to Kubernetes.

The ovirt-cloud.conf file then must be specified in kube-controller-manager:

kube-controller-manager ... --cloud-provider=ovirt --cloud-config=/path/to/ovirt-cloud.conf ...

oVirt Cloud Provider Screencast

This short screencast demonstrates how the oVirt Cloud Provider can be used to dynamically add VMs to your Kubernetes cluster.

Support Level

IaaS Provider	Config. Mgmt	OS	Networking	Docs	Conforms	Support Level
oVirt				docs		Community (@simon3z)

Feedback

Was this page helpful?

Thanks for the feedback. If you have a specific, answerable question about how to use Kubernetes, ask it on Stack Overflow. Open an issue in the GitHub repo if you want to report a problem or suggest an improvement.