:_mod-docs-content-type: PROCEDURE
[id="adopting-the-placement-service_{context}"]

= Adopting the Placement service

To adopt the Placement service, you patch an existing `OpenStackControlPlane` custom resource (CR) that has the Placement service disabled. The patch starts the service with the configuration parameters that are provided by the {rhos_prev_long} ({OpenStackShort}) environment.

.Prerequisites

* You import your databases to MariaDB instances on the control plane. For more information, see xref:migrating-databases-to-mariadb-instances_migrating-databases[Migrating databases to MariaDB instances].
* You adopt the {identity_service_first_ref}. For more information, see xref:adopting-the-identity-service_adopt-control-plane[Adopting the Identity service].

.Procedure

* Patch the `OpenStackControlPlane` CR to deploy the Placement service:
+
----
$ oc patch openstackcontrolplane openstack --type=merge --patch '
spec:
  placement:
    enabled: true
    apiOverride:
      route: {}
    template:
      databaseInstance: openstack
      databaseAccount: placement
      secret: osp-secret
      override:
        service:
          internal:
            metadata:
              annotations:
                metallb.universe.tf/address-pool: internalapi
                metallb.universe.tf/allow-shared-ip: internalapi
                metallb.universe.tf/loadBalancerIPs: 172.17.0.80 <1>
            spec:
              type: LoadBalancer
'
----
+
<1> If you use IPv6, change the load balancer IP to the load balancer IP in your environment, for example, `metallb.universe.tf/loadBalancerIPs: fd00:bbbb::80`.

.Verification

* Check that the Placement service endpoints are defined and pointing to the
control plane FQDNs, and that the Placement API responds:
+
----
$ alias openstack="oc exec -t openstackclient -- openstack"

$ openstack endpoint list | grep placement


# Without OpenStack CLI placement plugin installed:
PLACEMENT_PUBLIC_URL=$(openstack endpoint list -c 'Service Name' -c 'Service Type' -c URL | grep placement | grep public | awk '{ print $6; }')
oc exec -t openstackclient -- curl "$PLACEMENT_PUBLIC_URL"

# With OpenStack CLI placement plugin installed:
openstack resource class list
----