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Events Supported by Event Monitoring

Updated on 2025-02-13 GMT+08:00
Table 1 Document Database Service (DDS)

Event Source

Event Name

Event ID

Event Severity

Description

Solution

Impact

DDS

DB instance creation failure

DDSCreateInstanceFailed

Major

A DDS instance fails to be created due to insufficient disks, quotas, and underlying resources.

Check the number and quota of disks. Release resources and create DDS instances again.

DDS instances cannot be created.

Replication failed

DDSAbnormalReplicationStatus

Major

The possible causes are as follows:

  1. The replication delay between the primary and secondary nodes is too long, which usually occurs when a large amount of data is written to databases or a large transaction is performed. During off-peak hours, the replication delay gradually decreases.
  2. The network between the primary and secondary nodes is disconnected.

Submit a service ticket.

Your applications are not affected because this event does not interrupt data read and write.

Replication recovered

DDSReplicationStatusRecovered

Major

The replication delay between the primary and standby instances is within the normal range, or the network connection between them has restored.

No further action is required.

None

DB instance faulty

DDSFaultyDBInstance

Major

This event is a key alarm event and is reported when an instance is faulty due to a disaster or a server failure.

Submit a service ticket.

The database service may be unavailable.

DB instance recovered

DDSDBInstanceRecovered

Major

If a disaster occurs, NoSQL provides an HA tool to automatically or manually rectify the fault. After the fault is rectified, this event is reported.

No further action is required.

None

Faulty node

DDSFaultyDBNode

Major

This event is a key alarm event and is reported when a database node is faulty due to a disaster or a server failure.

Check whether the database service is available and submit a service ticket.

The database service may be unavailable.

Node recovered

DDSDBNodeRecovered

Major

If a disaster occurs, NoSQL provides an HA tool to automatically or manually rectify the fault. After the fault is rectified, this event is reported.

No further action is required.

None

Primary/standby switchover or failover

DDSPrimaryStandbySwitched

Major

This event is reported when a primary/secondary switchover or a failover is triggered.

No further action is required.

None

Insufficient storage space

DDSRiskyDataDiskUsage

Major

The storage space is insufficient.

Scale up storage space. For details, see section "Scaling Up Storage Space" in the corresponding user guide.

The instance is set to read-only and data cannot be written to the instance.

Data disk expanded and being writable

DDSDataDiskUsageRecovered

Major

The capacity of a data disk has been expanded and the data disk becomes writable.

No action is required.

No adverse impact.

Schedule for deleting a KMS key

DDSplanDeleteKmsKey

Major

A KMS key is scheduled to be deleted.

After a KMS key is scheduled to be deleted, either decrypt the data encrypted by KMS key in a timely manner or cancel the key deletion.

After a KMS key is deleted, disk encryption cannot be enabled.

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