OpenSearch

This section describes the alerts for the OpenSearch service.

• OpenSearchHeapUsageCritical

• OpenSearchHeapUsageWarning

• OpenSearchClusterStatusCritical

• OpenSearchClusterStatusWarning

• OpenSearchPVCMismatch

• OpenSearchNumberOfRelocationShards

• OpenSearchNumberOfInitializingShards

• OpenSearchNumberOfUnassignedShards

• OpenSearchNumberOfPendingTasks

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OpenSearchHeapUsageCritical

Severity	Critical
Summary	OpenSearch heap usage is too high (>90%).
Description	The heap usage of the OpenSearch {{ $labels.name }} node from the cluster {{ $labels.cluster }} is over 90% for 5 minutes.

OpenSearchHeapUsageWarning

Severity	Warning
Summary	OpenSearch heap usage is high (>80%).
Description	The heap usage of the OpenSearch {{ $labels.name }} node from the cluster {{ $labels.cluster }} is over 80% for 5 minutes.

OpenSearchClusterStatusCritical

Severity	Critical
Summary	OpenSearch critical status.
Description	The OpenSearch {{ $labels.cluster }} cluster status has changed to red.

OpenSearchClusterStatusWarning

Severity	Warning
Summary	OpenSearch warning status.
Description	The OpenSearch {{ $labels.cluster }} cluster status has changed to yellow. The alert persists for the cluster in the red status.

OpenSearchPVCMismatch

Available since 2.22.0

Severity	Warning
Summary	OpenSearch PVC size mismatch
Description	The PVC size requested by OpenSearch StatefulSet does not match the configured PVC size. To troubleshoot the issue, refer to OpenSearchPVCMismatch alert raises due to the OpenSearch PVC size mismatch.

OpenSearchNumberOfRelocationShards

Severity	Warning
Summary	Shards relocation takes more than 20 minutes.
Description	The number of relocating shards in the OpenSearch cluster {{ $labels.cluster }} is {{ $value }} for 20 minutes.

OpenSearchNumberOfInitializingShards

Severity	Warning
Summary	Shards initialization takes more than 10 minutes.
Description	The number of initializing shards in the OpenSearch cluster {{ $labels.cluster }} is {{ $value }} for 10 minutes.

OpenSearchNumberOfUnassignedShards

Severity	Major
Summary	Shards have unassigned status for 5 minutes.
Description	The number of unassigned shards in the OpenSearch cluster {{ $labels.cluster }} is {{ $value }} for 5 minutes.

OpenSearchNumberOfPendingTasks

Severity	Warning
Summary	Tasks have pending state for 10 minutes.
Description	The number of pending tasks in the OpenSearch cluster {{ $labels.cluster }} is {{ $value }} for 10 minutes. The cluster works slowly.