Upgrading the Kernel Version of a Database Proxy

Scenarios

You can manually upgrade RDS for MySQL database proxies to the latest kernel version to improve performance, add new functions, and fix problems.

Upgrade Methods

A kernel version can be upgraded in either of the following ways:

• Upon submission: The system upgrades the proxy instance version immediately after you submit the upgrade request.
• In maintenance window: When you submit an upgrade request, the system waits for a maintenance window to perform the upgrade. For details on how to change the maintenance window, see Changing the Maintenance Window.

If the kernel version of your instance has known defects, has expired, or has been brought offline, the system will deliver an upgrade task during the maintenance window and notify you by SMS message or email.

Precautions

• The upgrade duration depends on how many nodes your database proxy has. Perform the upgrade during off-peak hours.
• During the upgrade, short connections are not affected. Persistent connections lasting for more than 24 hours will be interrupted intermittently.

Constraints

• Only proxy instances with kernel version 2.3.0.1 or later can be upgraded manually on the console.
• A version upgrade cannot be rolled back after the upgrade is complete.

Procedure

1. On the Instances page, click the target instance name.
2. On the Database Proxy page, in the proxy information area, click Upgrade next to the Version field.
3. In the displayed dialog box, select a scheduled time and click OK.
   • Upon submission: The system upgrades the minor version immediately after you have submitted your upgrade request.
   • In maintenance window: The system will upgrade the minor version during the maintenance window that you have configured.