Suggestions on Alarm Rules for GeminiDB DynamoDB-Compatible API Metrics
After setting alarm rules on the Cloud Eye console, for example, specifying monitored objects and notification policies, you can stay on top of your instance status. For details, see Configuring Alarm Rules for a GeminiDB DynamoDB-Compatible Instance.
This section describes the recommended alarm rules for GeminiDB DynamoDB instance metrics when the reporting interval is 1 minute.
| Metric ID | Metric Name | Description | Dimension | Threshold (Raw Value) in Best Practices | Alarm Severity in Best Practices | Alarm Handling Suggestion |
|---|---|---|---|---|---|---|
| nosql005_disk_usage | Storage Space Usage | Storage usage Unit: % | Instance | > 80% for 3 consecutive periods | Major |
|
| cassandra001_cpu_usage | CPU Usage | CPU usage of an instance Unit: % | Node | > 80% for 3 consecutive periods | Major | Upgrade CPU specifications. For details, see Changing vCPUs and Memory of a GeminiDB DynamoDB-Compatible Instance. |
| cassandra002_mem_usage | Memory Usage | Memory usage of an instance Unit: % | Node | > 80% for 3 consecutive periods | Major | Upgrade memory specifications. For details, see Changing vCPUs and Memory of a GeminiDB DynamoDB-Compatible Instance. |
| cassandra015_read_latency | Average Read Latency | Average latency of database reads Unit: ms | Node | > 900 ms for 3 consecutive periods | Major | Check whether the service traffic increases sharply and whether the database is normal. For details, see Viewing GeminiDB DynamoDB-Compatible Instance Metrics. |
| cassandra016_write_latency | Average Write Latency | Average latency of database writes Unit: ms | Node | > 900 ms for 3 consecutive periods | Major | Check whether the service traffic increases sharply and whether the database is normal. For details, see Viewing GeminiDB DynamoDB-Compatible Instance Metrics. |
| cassandra037_pending_write | Suspended Write Tasks | Write tasks waiting in the queue Unit: count | Node | > 3,000 for 3 consecutive periods | Major | Check whether the service traffic increases sharply and whether the database is normal. For details, see Viewing GeminiDB DynamoDB-Compatible Instance Metrics. |
| cassandra038_pending_read | Suspended Read Tasks | Read tasks in the waiting status Unit: count | Node | > 3,000 for 3 consecutive periods | Major | Check whether the service traffic increases sharply and whether the database is normal. For details, see Viewing GeminiDB DynamoDB-Compatible Instance Metrics. |
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