TDSQL-C for MySQL supports the creation of clusters by allowing the selection of both a primary availability zone and a secondary availability zone. This document will guide you through the process of selecting the primary and secondary availability zones for your cluster via the console and purchase page.
Overview
TDSQL-C for MySQL supports multi-AZ deployment in the same region, which has higher availability and better disaster recovery capability than single-AZ deployment.
TDSQL-C for MySQL clusters benefit from increased availability and durability when deployed in multi-AZ mode. When you provision a multi-AZ database cluster, TDSQL-C for MySQL will automatically create a primary database instance and synchronously replicate data to the secondary instance in another AZ. Each AZ runs on its own independent and physically distinct infrastructure designed for high reliability. In the event of an infrastructure failure, automatic failover to the secondary instance will be performed, so that you can resume database operations as soon as the failover is completed. As the endpoints of the database instances remain unchanged after failover, applications can resume database operations without manual intervention required.
Selecting AZs on purchase page when creating cluster
2. In the Database Configuration item on the purchase page, select the desired region, and available primary and secondary AZs will be displayed below, which you can select as needed.
3. After selecting the database configuration, click Next to enter the Basic Information and Advanced Configuration items.
4. After completing the configuration and confirming that everything is correct, click Buy Now.
5. After the purchase is completed, you can check the availability zone information under the corresponding view.
Tab View
List view
After the purchase is completed, you can return to the cluster list. Once the status of the created cluster changes to Running , you can check the availability zone information through the architecture under cluster details on the cluster management page.
After the purchase, return to the cluster list. Once the status of the newly created cluster changes to Running , you can check the availability zones through Availability Information page in Cluster Details section by either browsing the cluster list page or clicking on the cluster ID.
Modifying AZ information
1. On the cluster list page, proceed according to the view mode actually in use to enter the deployment method modification interface.
Tab View
List view
1. Log in to the TDSQL-C for MySQL console, locate the cluster list on the left, and click the target cluster to enter the cluster management page.
2. On the cluster management page, click
after clicking on the deployment method.
1. Log in to the TDSQL-C for MySQL console, in the cluster list, click the cluster ID or Operation in the Management column to enter the cluster details page.
2. On the cluster details page, in the availability information module, click Modify behind Deployment Method to change the availability zone.
2. In the pop-up dialog box, complete the information modification, then click Confirm .
Note:
Currently, only modifications to the secondary availability zone are supported. Changes to the primary availability zone are not supported.
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