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