Take over a cluster

You can perform this operation to take over a cluster created in a command-line tool or another OCP cluster and maintain and manage the cluster through the current OCP cluster.

Prerequisites

• The logon user who takes over the cluster has the Cluster Manager role, or the permission to create a cluster.

• All OBServers in the OceanBase cluster to be taken over are running normally.

• Always take over the primary OceanBase cluster first:

  • In a single-OCP scenario, the primary OceanBase cluster is taken over before the standby OceanBase cluster.

  • In a multi-OCP scenario, the primary OceanBase cluster is taken over in any OCP before the standby OceanBase cluster is taken over in any OCP.

Notice

After an OceanBase cluster is taken over, it cannot be maintained and monitored in the original OCP cluster. We recommend that you evaluate the risk before taking any action.

Procedure

1. In the left-side navigation pane, click Clusters . The Cluster Overview page appears.

2. Click Take over Cluster in the upper-right corner.

3. Connect to the cluster. The following two connection modes are supported: :

   1. Direct Connection: Specify IP Address , Port , and Password , and click Next .

      

   2. OBProxy : Specify IP Address , Port, Cluster Name, Cluster ID (Optional) , and Password , and click Next .

      Note

      When you are taking over a standby cluster, you must specify the cluster ID. If you need to take over both the primary and standby clusters, take over the primary cluster first.

      

4. After the cluster is connected, perform pre-takeover check.

   • When the check succeeds, select the host, type, and credentials, and click Submit in the lower part of the page.

   • If the check fails, move the pointer over the icon next to Failed, modify the OBServer configuration as prompted, and then click Recheck.