To ensure the stability of an AnalyticDB for MySQL cluster, the backend system of AnalyticDB for MySQL maintains clusters at irregular intervals. The default maintenance window is from 02:00 (UTC+8) to 03:00 (UTC+8). We recommend that you set the maintenance window to the off-peak hours of your business to avoid negative impacts on your business.
Considerations
- Before the maintenance starts, AnalyticDB for MySQL sends a text message or an email to notify the contacts that are specified for your Alibaba Cloud account.
- During the maintenance window, you can access databases, manage accounts, manage databases, and configure the IP address whitelist for the cluster.
- During the maintenance window, network jitters may occur and may affect read and write operations. Make sure that you have configured automatic reconnection policies for your applications.
- During the maintenance window, the cluster may experience transient connections. Make sure that you have configured automatic reconnection policies for your applications.