Default alert rulesΒΆ

The following alert rules are set by default in Charmed OpenSearch.

Alert Severity Notes
OpenSearchScrapeFailed critical Triggered when the prometheus scrape fails.
OpenSearchClusterRed critical Triggered when the health status of the cluster is red, meaning that principal shards are not allocated.
OpenSearchClusterYellowTemp warning Triggered when shards are still reallocating or initializing.
OpenSearchClusterYellow warning Triggered when some replicas shards are unassigned. Might require scale the application to host all shards
OpenSearchWriteRequestsRejectionJumps warning Triggered when the write request rejection is bigger than 5%. Might indicate that the node may not keep up with the indexing speed.
OpenSearchNodeDiskLowWatermarkReached warning Triggered when disks reach 85% of the capacity.
OpenSearchNodeDiskHighWatermarkReached high Triggered when disks reach 90% of the capacity.
OpenSearchJVMHeapUseHigh alert Triggered when the JVM Heap usage in a node reaches 75%.
OpenSearchHostSystemCPUHigh alert Triggered when system CPU usage in a node reaches 90%.
OpenSearchProcessCPUHigh alert Triggered when process CPU usage in a node reaches 90%.
OpenSearchThrottling warning Triggered when a cluster is throttling. Might indicate that is necessary to review indexing request rate, index lifecycle or scale the application.
OpenSearchThrottlingTooLong critical Triggered when a cluster is constantly throttling for at least 20 minutes. Might indicate that is necessary to review indexing request rate, index lifecycle or scale the application.