Archive Database supports Archive Database (High Compression Ratio) and Archive Database Cluster Edition. This topic describes how to upgrade Archive Database (High Compression Ratio) to Archive Database Cluster Edition.

Prerequisites

Before you use this feature, Submit a ticket to contact technical support for data processing.

Background information

Archive Database (High Compression Ratio) clusters are unavailable for purchase. However, existing Archive Database (High Compression Ratio) clusters remain available for use. You can upgrade existing Archive Database (High Compression Ratio) clusters to Archive Database Cluster Edition Dedicated clusters. For more information about Archive Database Cluster Edition, see Overview.

Precautions

  • After you upgrade Archive Database (High Compression Ratio) to Archive Database Cluster Edition, the system automatically restarts nodes. In most cases, the restart takes 3 to 5 minutes based on the redo logs that accumulate before the upgrade. In extreme cases, the restart may take up to 30 minutes. During this period, your business is unavailable. Exercise caution when you perform this upgrade. We recommend that you perform this upgrade during off-peak hours.
  • After the upgrade is successful, all nodes in the cluster continue to use the primary endpoint. To use a cluster endpoint, you must configure the cluster endpoint on your own.
  • After you upgrade an Archive Database Standalone Edition to an Archive Database Cluster Edition cluster, the Archive Database Cluster Edition cluster cannot be reverted to the Archive Database (High Compression Ratio) cluster. If the reversion is required, we recommend that you add nodes. After you add nodes, existing nodes are not restarted. The operations of adding and removing nodes and precautions are consistent with those of Cluster Edition. For more information, see Add or remove read-only nodes.

Procedure

  1. Log on to the PolarDB console.
  2. In the upper-left corner of the console, select the region where the cluster that you want to manage is deployed.
  3. Open the Archive Database Change Configurations dialog box by using one of the following methods:
    • Method 1
      On the Clusters page, find the cluster that you want to manage and click Upgrade to Archive Database Cluster Edition in the Actions column. Upgrade to Archive Database Cluster Edition
    • Method 2
      1. On the Clusters page, click the ID of the cluster.
      2. In the Database Nodes section of the Overview page, click Upgrade to Archive Database Cluster Edition. Upgrade to Archive Database Cluster Edition
  4. Click + Add a read-only node, specify Switching Time, read and accept the terms of service, and then click Buy Now.
    Note
    • If you want to add multiple nodes to your PolarDB for MySQL cluster at a time, click + Add a read-only node again to add more nodes.
    • You can set Switching Time to Switch Now or Switch At. If you select Switch At, you can specify a point in time within the following 24 hours. The nodes will be added within 30 minutes after the specified point in time. You can view the details about the scheduled task on the Scheduled Tasks page, or cancel the task. For more information, see View or cancel a scheduled task.
  5. On the Purchase page, confirm the order information and click Purchase.