Replace an arbitration service

This topic describes how to replace a failed arbitration service with a new one when the server hosting the arbitration service fails. Before you replace an arbitration service, note the following items:

• The replacement may affect the high availability feature of associated tenant replicas. We recommend that you perform the operation during off-peak hours.
• Ensure that the specifications of the new arbitration service are sufficient for business load. In scenarios such as insufficient disk space, the arbitration service may not be able to support business load.

Prerequisites

• The login user in the OCP console has the following permissions:

  • The Maintain Arbitration Service resource permission.
  • The permission to access the Overview page of the cluster.

• The new arbitration service is in the Running state.

• Log streams of the tenants associated with the arbitration service are not downgraded.

• If the arbitration service is associated with an OceanBase cluster, the new arbitration service must have the same major and minor versions as the OceanBase cluster. For example, if the versions of both the OceanBase cluster and the arbitration service are V4.2.x.x, otherwise the replacement will fail.

Procedure

1. Log in to the OCP console.

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

3. Click the Arbitration Service tab.

4. Find the arbitration service that you want to replace and choose More > Replace Service in the Actions column.

5. In the panel that appears, select an arbitration service. You can also click Create Service at the bottom of the drop-down list to create an arbitration service for the cluster. For more information, see Create an arbitration service.

6. Click Submit.