After you log on to OCP, click Tenants in the left-side navigation pane to go to the Tenant Overview page. In the left-side navigation pane, click Topology to view the topology of the current tenant.
The topology displays the distribution of replicas in the cluster under the tenant. In the upper-right corner of the page, you can resize or refresh the topology.
The topology displays information at three layers:
The cluster layer
The zone layer
The server layer

Cluster
The cluster layer displays the name of the cluster under the tenant and the current status of the cluster.
To perform more operations, click the More icon in the upper-right corner.
To view the cluster topology, click View Cluster .
To modify the zone priority, click Modify Zone Priority of Tenant .

Zone
The zone layer displays the name and current status of the zone.
If a zone under the tenant has a replica, the zone is displayed in purple. You can view the abbreviation of the replica type next to the tenant name. If no replica is created in a zone, the zone is displayed in gray.
If you move the pointer over the zone icon, you can view the replica type and number of units in the zone.

To perform more operations, click the More icon in the upper-right corner.

To modify the replica type, click Change Replica Type . The following dialog box appears.

To modify the resource pool of a zone under the tenant, click Modify Resource Pool . The following dialog box appears.

To delete a replica, click Delete Replica . In the message that appears, click Delete .

Server
The server layer displays the IP address, port number, and current status of a server.
If a server under the tenant has a unit, the server icon is green. Otherwise, the server icon is gray.
To perform more operations, click the More icon in the upper-right corner of the server icon.
You can delete a unit. In the message that appears, click Delete to delete the specified unit.