If your instance is overprovisioned or underprovisioned, your business needs cannot be best met, and you can adjust its specifications to fully utilize resources and reduce unnecessary costs.
This document introduces how to adjust the compute configuration for clusters with pre-configured resource instance types. For information on adjusting configurations for serverless clusters, refer to Adjusting Configurations.
Note:
If the cluster instance type is a pre-configured resource and a database proxy is enabled, you can choose whether to adjust the configuration of the database proxy on the compute configuration adjustment page.
Configuration Adjustment Capabilities
TDSQL-C for MySQL uses an architecture where computing and storage resources are separated and all compute nodes share the same data. In cross-server configuration adjustment, no data migration is required; therefore, configuration upgrade/downgrade can be completed within seconds.
When an instance undergoes configuration adjustment, a new primary instance of higher specifications will be automatically started. Once set up, the new primary instance is automatically promoted to the primary database, and the disconnection of the old primary database completes the configuration adjustment.
Directions
Step one: On the cluster list page, operate based on the actually used view mode, and navigate to the configuration adjustment page:
Tab View
List View
1. Log in to the TDSQL-C for MySQL console, and click the target cluster in the cluster list on the left to enter the cluster management page.
2. On the Cluster Details tab, find the target instance, and click the icon
or click Adjust Configurations to enter the configuration adjustment page.
1. Log in to the TDSQL-C for MySQL console, find the target cluster and click the cluster ID or Manage in the Operation column in the cluster list to enter the cluster management page.
2. On the Instance List tab, locate the desired instance and select More > Adjust Configurations in the Operation column.
Step two: Within the Instance Configuration Adjustment page, select the necessary configurations and the operation time, and click Buy Now.
Note：
Adjustment to instance configurations may result in momentary disconnections. Please ensure your operations have a reconnection mechanism in place.
Instance Specification: Select the CPU and memory you need to adjust.
Configure Database Proxy: Choose whether to adjust the configuration of the database proxy nodes. For information on how the adjustment of each configuration on the database proxy nodes affects, refer to Adjusting Database Proxy Configuration. This option is only displayed when the instance form of the cluster is pre-configured resources and the database proxy is enabled.
Switch Time
Upon selecting Upon Upgrade Completion, the switch-over action will be immediately triggered following the completion of configuration changes.
Select During Maintenance Time, and the instance will undergo a flash cut switch within the Maintenance Window. For modifying the maintenance window, refer to Modify Instance Maintenance Time.
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