Configuring events and alerts
The OpsCenter Event Log page displays a continuously updated list of events and alerts.
The following list reflects the most detailed logging level available for Cassandra, DataStax
Enterprise, and OpsCenter events:
- DEBUG(0)
- INFO (1)
- WARN (2)
- ERROR (3)
- CRITICAL (4)
- ALERT (5)
Events
Data for these events is stored in the events and events_timeline column families in the OpsCenter keyspace:
| Event | Code | Description |
|---|---|---|
| COMPACTION | 0 | Major compaction has occurred. |
| CLEANUP | 1 | Unused keys have been removed or cleaned up. |
| REPAIR | 2 | A repair operation has been initiated. |
| FLUSH | 3 | Memtables have been flushed to disk. |
| DRAIN | 4 | The commit log has been emptied, or drained. |
| DECOMMISSION | 5 | A leaving node has streamed its data to another node. |
| MOVE | 6 | Like NODE_MOVE; a new token range has been assigned. |
| NODE_DOWN | 13 | A node has stopped responding. |
| NODE_UP | 14 | An unresponsive node has recovered. |
| NODE_LEFT | 15 | A node has left, or been removed from, the ring. |
| NODE_JOIN | 16 | A node has joined the ring. |
| NODE_MOVE | 17 | A node has been assigned a new token range (the token has moved). |
| OPSC_UP | 18 | OpsCenter has been started and is operating. |
| OPSC_DOWN | 19 | OpsCenter was stopped or stopped running. |
| GC | 20 | Java garbage collection has been initiated. |
Alerts
Optionally, you can configure OpsCenter to send alerts for selected levels of events. These alerts can be provided remotely by email, or through HTTP to a selected URL. Alerts are disabled by default.
Alerts are triggered only by events from the OpsCenter API/UI. For example, a nodetool move operation submitted from the command line does not trigger an alert. However, a move operation launched using controls in the OpsCenter does trigger an alert.
All alerts contain the following information about each event captured:
| Field | Description | Example |
|---|---|---|
| api_source_ip | IP that originally sent the request. | 67.169.50.240 |
| target_node | Destination of a STREAMING action. | 10.1.1.11 |
| event_source | Component that caused the event. | OpsCenter (i.e., restart, start) |
| user | OpsCenter user that caused the event. | opscenter_user |
| time | Normal timestamp for the event. | 1311025650414527 |
| action | Type of event (see above table) | 20 |
| message | Description of the event. | Garbage Collecting node 10.1.1.13 |
| level | Numerical code for the log level. | 1 |
| source_node | Node where the event originated. | 10.1.1.13 |
| level_str | Logging level of the event. | INFO |