Migrate a cluster

This topic describes how to migrate an OceanBase cluster from one OceanBase Cloud Platform (OCP) cluster to another.

Prerequisites

• You have the permission to manage clusters.

• The OceanBase cluster to be migrated is in the STOPPED, RUNNING, or UNAVAILABLE state.

• Migrate the cluster in off-peak hours.

• When you migrate an OceanBase cluster, you must first migrate the standby cluster.

  • When you migrate an OceanBase cluster from an OCP cluster, you must first migrate the standby OceanBase cluster and then the primary OceanBase cluster.

  • When you migrate OceanBase clusters deployed in primary/standby mode that are managed by different OCP clusters, you must first migrate the standby OceanBase cluster and then migrate the primary OceanBase cluster.

• If other services are deployed on the host where the OceanBase cluster is deployed, you cannot delete this host from the OCP cluster when you migrate the OceanBase cluster.

Procedure

1. Log on to the OCP console.

2. In the left-side navigation pane, click Clusters to go to the Clusters page.

3. In the Clusters list on the page, find the target cluster and click its name.

4. On the Overview page of the target cluster, click the More icon in the upper-right corner and choose Migrate Cluster.

5. In the dialog box that appears, perform the following operations:

   1. Select the host where the cluster is deployed and delete it from the OCP cluster.

      Before you take over the OceanBase cluster to the new OCP cluster, you must first delete the host where the OceanBase cluster is deployed from the original OCP cluster. You can also delete the host on the Hosts page. For more information, see Delete a host.

      Notice

      If no other services are deployed on the host, we recommend that you delete the host. If you choose to retain the host and deploy other clusters on this host, adverse effects can be caused on the original cluster. Exercise caution when you choose to retain the host, and understand the risks in advance.

   2. Configure an encryption key for the credential file and export the credentials.

      After you click Export Credential, the system will export the credentials of the cluster to be migrated. After the cluster is taken over to the new OCP cluster, you can import cluster credentials in batches for future use. For more information, see Import a credential.

   3. Enter move out in the textbox and click Move Out to submit a task to migrate the OceanBase cluster.

   

6. In the dialog box that appears, click View Task to view the progress of the task.

   After the task status changes to Completed and the OceanBase cluster disappears from the cluster list on the Clusters page, the cluster is migrated.