Add alerts for DC and node message latency
Add alerts for notification when datacenter and node messaging latencies reach unacceptable levels for your environment:
-
Click Alerts from the main OpsCenter monitoring menu.
The Active Alerts dialog appears.
-
In the Active Alerts dialog, click Manage Alerts.
The Manage Alerts Rules dialog appears.
-
If multiple clusters are monitored by your OpsCenter instance, select a cluster from the Cluster list.
-
Click Add Alert.
-
For Notify me when, select Advanced, then select Cassandra, and then select Datacenter Messaging Latency.
-
Specify the notification criteria:
-
Select above (default) or below.
-
Enter a value for ms/op (milliseconds per operation).
-
Select the elapsed time for how long the condition must be present before triggering an alert. The default is 5 minutes.
-
Select the percentile. The options include min (default), 50th, 90th, 99th, or max.
-
Select the Source Datacenter.
-
For Notify every, select the frequency to send notifications once the alert condition is met. The default is 5 minutes.
-
-
Click Save Alert.
The alert is added to the list of managed alerts.
-
Repeat the preceding steps to add the Node Messaging Latency alert. The Source Datacenter option isn’t available for node-level alerts.
When the alert criteria is met, the fired alert is recorded in the Event Log and sent by any alert mechanism you have configured for your environment, such as email.
