You can receive notifications for ApsaraDB for Redis events such as instance migrations and version upgrades by email, internal message, or by using the ApsaraDB for Redis console. For pending events, you can view event types, regions, procedures, considerations, affected instances, and the default switchover time. You can also adjust the scheduled switchover time.
Precautions
- In the upper part of the Instances page in the ApsaraDB for Redis console, you can view the number of pending events. A value of 0 indicates no pending events.
- In most cases, notifications for system maintenance events such as instance migrations
and version upgrades are sent at least three days before execution. Notifications
for high-risk vulnerability fixes are sent three or fewer days before execution due
to the urgency of these events.
You can receive notifications by email, internal message, or by using the ApsaraDB for Redis console. To use this feature, log on to the Message Center, select ApsaraDB Fault or Maintenance Notifications, and then specify a contact. We recommend that you specify an O&M engineer as the contact.
Note To be notified of pending event updates such as new pending events and task progress at the earliest opportunity, you can configure alert rules for pending events in the CloudMonitor console. For more information, see Subscribe to event notifications.Figure 1. Message Center settings
Procedure
Causes and impacts of events
Cause | Impact | Description |
---|---|---|
Instance migration | Transient connections |
When the switchover is performed at the scheduled switchover time you may experience the following impacts. We recommend that you perform the switchover
during off-peak hours and make sure that your applications are configured to automatically
re-establish a connection.
|
Switchover between master and replica nodes | ||
Zone migration | ||
Minor version update | Transient connections |
When the switchover is performed at the scheduled switchover time you may experience the following impacts. We recommend that you perform the switchover
during off-peak hours and make sure that your applications are configured to automatically
re-establish a connection.
|
Differences between minor versions | Different minor versions (kernel versions) have different updates. You must take note of the differences between the current minor version and the minor version to which your instance is updated. | |
Minor version update for proxy nodes | Transient connections |
When the switchover is performed at the scheduled switchover time you may experience the following impacts. We recommend that you perform the switchover
during off-peak hours and make sure that your applications are configured to automatically
re-establish a connection.
|
Differences between minor versions | Different minor versions have different updates. You must take note of the differences between the current minor version and the minor version to which your proxy nodes are updated. |
FAQ
For more information, see FAQ about pending events.
Related API operations
Operation | Description |
---|---|
ModifyActiveOperationTask | Modifies the scheduled switchover time for an O&M task of an ApsaraDB for Redis instance. |