This topic describes how to upgrade the kernel minor version of an RDS for MySQL instance. The upgrade of the kernel minor version helps to improve system performance, introduce new functions, and fix defects.

Overview

The automatic minor version upgrade function is enabled by default. You can navigate to the Basic Information page on the RDS console and then in the Configuration Information section view information about Automatic Minor Version Upgrade.小版本自动升级
  • Auto: In this mode, Alibaba Cloud sends you notifications when a new kernel minor version is released. The automatic upgrade is performed during the specified maintenance window.
  • Manual: In this mode, Alibaba Cloud sends you notifications when the lifecycle of the kernel minor version used by your RDS for MySQL instance ends. You are notified that you must upgrade your RDS for MySQL instance to the latest kernel minor version within one month.
    Note When the lifecycle of a kernel minor version ends, this kernel minor version is deprecated.

Precautions

  • The kernel minor version upgrade incurs an restart of your RDS instance. During the restart, your RDS instance may be unavailable for 30 seconds or less. We recommend that you perform the upgrade during off-peak hours or make sure that your application can automatically reconnect to your RDS instance.
  • The kernel minor version of your RDS instance cannot be degraded after being upgraded.
  • After you upgrade the configuration of your RDS instance, the kernel minor version of your RDS instance is upgraded accordingly.

Set automatic minor version upgrade

  1. Log on to the RDS console.
  2. In the upper-left corner, select the region where the target RDS instance is located.地域截图
  3. Find the target RDS instance and click the instance ID.
  4. On the Basic Information page, find the Configuration Information section, and click Configure to the right of Automatic Minor Version Upgrade.
  5. In the displayed dialog box, select Auto or Manual and click OK.修改小版本自动升级

Manually upgrade the minor version

  1. Log on to the RDS console.
  2. In the upper-left corner, select the region where the target RDS instance is located.地域截图
  3. Find the target RDS instance and click the instance ID.
  4. On the Basic Information page, find the Configuration Information section and click Upgrade Kernel Version.
  5. In the displayed dialog box, select the time point at which you want to perform the upgrade, then click OK.