Outage in MongoDB
AWS Availability Zone use1-az4 in US-EAST-1 Region is Impaired
Resolved MinorIncident Report
Summary AI Generated
AWS Availability Zone use1-az4 in the US-EAST-1 region experienced an impairment that affected MongoDB Atlas clusters, causing some cluster nodes to have degraded health and delays in operations like instance scaling and configuration changes. The Atlas system implemented healing actions to restore affected nodes and provisioned new nodes in healthy availability zones while AWS worked to restore full availability. The incident was resolved after 36.1 hours of monitoring and remediation efforts.
AWS Availability Zone use1-az4 in US-EAST-1 region is impaired. For some clusters in AWS US-EAST-1 region, cluster nodes in that availability zone may have impaired health. Some Atlas operations, including instance scaling and cluster configuration changes, may also be delayed for clusters in AWS US-EAST-1.
Please see https://health.aws.amazon.com/health/status for more information.
Components affected
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Latest Updates ( sorted recent to last )
RESOLVED
3 days ago - at 05/09/2026 02:24PM
This incident has been resolved.
MONITORING
4 days ago - at 05/08/2026 08:41PM
AWS continues to work towards full recovery. The Atlas system has been successfully taking healing actions on impacted nodes to restore node health and using healthy availability zones for provisioning new nodes.
We continue to monitor the situation. Please see https://health.aws.amazon.com/health/status for more information.
MONITORING
4 days ago - at 05/08/2026 12:34PM
AWS continues to make progress to restore the full availability of the availability zone. The Atlas system is taking healing actions on impacted nodes where possible to restore node health.
We continue to monitor the situation. Please see https://health.aws.amazon.com/health/status for more information.
MONITORING
4 days ago - at 05/08/2026 03:12AM
AWS Availability Zone use1-az4 in US-EAST-1 region is still impaired and AWS is working to restore the full availability of the availability zone. The Atlas system is taking healing actions on impacted nodes where possible to restore node health.
We continue to monitor the situation. Please see https://health.aws.amazon.com/health/status for more information.
IDENTIFIED
5 days ago - at 05/08/2026 02:24AM
AWS Availability Zone use1-az4 in US-EAST-1 region is impaired. For some clusters in AWS US-EAST-1 region, cluster nodes in that availability zone may have impaired health. Some Atlas operations, including instance scaling and cluster configuration changes, may also be delayed for clusters in AWS US-EAST-1.
Please see https://health.aws.amazon.com/health/status for more information.
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