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Volume provisioner and flexvolume driver can easily be deployed on kubernetes cluster. Following document explains quick steps to deploy ovirt-openshift-extensions on kubernetes enviroment.

Deployment

  1. Checkout sample deployment yaml's from https://gist.github.com/rgolangh/b8eb941ece1d7b494b232a80aabfb2d6

  2. Update configmap.yaml to provide your ovirt connections details. Mainly you need to modify url, password fields in the configmap.yaml Create config map by:

    kubectl create -f configmap.yaml
  3. Create cluster role, role bindings & service account required for volume provisioner and flexvoume driver.

     kubectl create -f rbac-all-in-one.yaml
  4. Create volume provisoner deployment.

    kubectl create -f provisioner.yaml

    Confirm that ovirt-volume-provisioner pod is scheduled and up by running kubectl get pods.

  5. Deploy flexvolume driver on all compute nodes by running following on the master node.

    kubectl create -f flexvolume.yaml

    You can confirm that ovirt-flexvolume-driver pod is scheduled and up on all kubernetes get pods. Please check the logs for provisioner & flexvolume-driver pods to confirm it can access ovirt url using 'kubectl get logs YOUR-POD-NAME'. If kubenetes compute node has problem accessing ovirt engine url, you might need to tweak your kubernetes cluster network configs or provide custom dns settings in flexvoume.yaml & provisoner.yaml and recreate them.

        dnsConfig:
          nameservers:
            - YOUR-DNS-SERVER-IP

Now your kubernetes cluster is ready to provision volumes from ovirt.

Test

Test your cluster by checking out https://github.com/oVirt/ovirt-openshift-extensions/blob/master/deployment/example/test-flex-pod-all-in-one.yaml Update ovirtStorageDomain field in test-flex-pod-all-in-one.yaml file to refer to your ovirt storage domain name on which volume needs to be provisioned.

Then spin off testpodwithflex by running

kubectl create -f test-flex-pod-all-in-one.yaml

Verify that volume is provisioned on your strorage domain and it's attached compute node where testpodwithflex is scheduled.

Enjoy your setup. Your feedback and contributions are most welcome.

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