Data Transmission Service (DTS) provides the O&M event alerting feature. When DTS detects a risk that could cause an instance to stop working as expected, it triggers an O&M event and notifies you through the DTS console, email, or internal message. From the Event Center, you can:
Review event details, including the affected instance, event level, and suggested actions.
Reschedule an event to run during off-peak hours before it executes automatically.
Prerequisites
Before you begin, ensure that you have:
Enabled ApsaraDB Fault or Maintenance Notifications in Message Center
Specified a contact (an O&M engineer is recommended)
Usage notes
Give Critical-level events immediate attention. If left unhandled, the affected DTS instance may become unavailable.
DTS sends event notifications at least one day before execution. Log in to the DTS console as soon as you receive a notification to review the event details and follow any suggested actions listed under Suggestions.
Set the Schedule Execution Time parameter so that DTS executes the event during off-peak hours. If you leave this parameter blank, DTS executes the event at the Planned Execution Time by default, which may cause business interruptions. The DTS service level agreement (SLA) does not guarantee service reliability or performance in such cases.
You can only modify the scheduled execution time for events in the Scheduled state. The new time must be at least 5 minutes after the current time and no later than the Latest Available Time. The Latest Available Time is 30 minutes before the Planned Execution Time.
View and manage O&M events
Step 1: Go to Event Center
Log in to the DTS consoleDTS console.
In the left-side navigation pane, click Event Center.
In the top navigation bar, select a region.
(Optional) Click the Scheduled O&M Events tab to filter scheduled events.
Step 2: Review event details
The event list includes the following fields:
| Field | Description |
|---|---|
| Event Publish Time | The time when the event was generated. |
| Planned Execution Time | The default execution time. Takes effect only if Schedule Execution Time is not set. |
| Schedule Execution Time | The execution time you set. DTS executes the event at this time during off-peak hours. |
For event types, levels, and states, see the reference tables below.
Step 3: Reschedule an event
Locate the event and click Modify Scheduled Time in the Actions column.
In the Schedule Execution Time dialog box, set the Scheduled Date and Schedule Time.
Click OK.
You can only reschedule events in the Scheduled state. The new time must be at least 5 minutes from now and no later than the Latest Available Time.
Reference
Event types
| Event category | Event code | Description | Suggested action |
|---|---|---|---|
| Scheduled O&M Events | SystemMaintenance.Shift | The system detected that the DTS instance may be affected by underlying hardware or software services. DTS will migrate the instance to another machine. | Set Schedule Execution Time so DTS migrates the instance during off-peak hours. Follow any additional guidance in Suggestions. |
CloudMonitor event names for SystemMaintenance.Shift:
| CloudMonitor event name |
|---|
Instance:SystemMaintenance.Shift:Scheduled |
Instance:SystemMaintenance.Shift:Executing |
Instance:SystemMaintenance.Shift:Executed |
Instance:SystemMaintenance.Shift:Canceled |
Instance:SystemMaintenance.Shift:ToDealt |
Instance:SystemMaintenance.Shift:Failed |
Event levels
| Level | Impact | Action |
|---|---|---|
| Critical | Significant impact. The DTS instance may become unavailable. | Handle immediately. |
| Warning | Moderate impact. Requires attention while the impact persists. | Monitor and act as needed. |
| Info | Minor impact. | Handle based on your business requirements. |
Event states
| State | Description |
|---|---|
| Scheduled | The event is scheduled and has not started. |
| Executing | The event is running. |
| Executed | The event completed successfully. |
| Canceled | The system canceled the event. |
| To Dealt | The event is blocked because the DTS instance is blocked. Configure a whitelist or update the database password for the instance to unblock it. |
| Failed | The event failed. A failed event does not mean the DTS instance itself has stopped working. |
FAQ
Can I manually trigger an O&M event?
No. All O&M operations run automatically. The only manual steps are those listed under Suggestions in the event details.
Can I cancel an O&M event?
Not directly. To cancel an event, terminate or release the corresponding DTS instance—the event then enters the Canceled state automatically. See Terminate a DTS instance and Release DTS instances for details.
Review the usage notes before terminating or releasing a DTS instance.
Can I manage O&M events through the API?
No. API management of O&M events is not supported.