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dataplane-post-ceph.md

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Configuring and deploying the post-Ceph dataplane

Assumptions

  • The pre-Ceph dataplane was already deployed and Ceph was manually installed afterwords

Initialize post-Ceph

Switch to the "openstack" namespace

oc project openstack

Change to the hci directory

cd architecture/examples/va/hci

Edit the values.yaml and service-values.yaml files to suit your environment.

vi values.yaml
vi service-values.yaml

The ceph sections of values.yaml should have values like this.

data:
  ceph:
    conf: $CONF
    keyring: $KEY
  nova:
    ceph:
      conf: |
        [libvirt]
        images_type=rbd
        images_rbd_pool=vms
        images_rbd_ceph_conf=/etc/ceph/ceph.conf
        images_rbd_glance_store_name=default_backend
        images_rbd_glance_copy_poll_interval=15
        images_rbd_glance_copy_timeout=600
        rbd_user=openstack
        rbd_secret_uuid=$FSID

Where the values of the three variables above can be retrieved by running the following commands on the Ceph cluster.

CONF=$(cat /etc/ceph/ceph.conf | base64 -w 0)
KEY=$(cat /etc/ceph/ceph.client.openstack.keyring | base64 -w 0)
FSID=$(awk -F ' = ' '/fsid/ {print $2}' /etc/ceph/ceph.conf)

Generate the post-Ceph dataplane nodeset CR.

kustomize build > nodeset-post-ceph.yaml

Generate the post-Ceph dataplane deployment CR.

kustomize build deployment > deployment-post-ceph.yaml

Create post-Ceph CRs

Create the nodeset CR

oc apply -f nodeset-post-ceph.yaml

Wait for post-Ceph dataplane nodeset setup to finish

oc wait osdpns openstack-edpm --for condition=SetupReady --timeout=600s

Create the deployment CR

oc apply -f deployment-post-ceph.yaml

Wait for control plane to be available after updating

oc wait osctlplane controlplane --for condition=Ready --timeout=600s

Wait for post-Ceph dataplane deployment to finish

oc wait osdpd edpm-deployment-post-ceph --for condition=Ready --timeout=1200s

Finalize Nova computes

Ask Nova to discover all compute hosts

oc rsh nova-cell0-conductor-0 nova-manage cell_v2 discover_hosts --verbose

Final OpenStackDataPlaneNodeSet services list

The OpenStackDataPlaneNodeSet must contain the full services list so that during updates all required services are updated. Thus, the pre-ceph and post-ceph deployments used a servicesOverride so that only a subset of the services would be configured either before or after Ceph was deployed. Any subsequent deployments should not pass a servicesOverride unless necessary.