Alerting
On the Alerting screen, you can configure alerts for user-defined conditions that could indicate problems in the cluster. You can use one of the available numeric metrics to specify the condition. For example, you can specify a condition of prolonged, high CPU load or a condition of high amount of disk usage on nodes. When the condition is observed for the time duration that you specified, Control Center sends an email and/or SMS notification.
Alert notifications are sent through notification channels. A notification channel is either SMS-based or email-based. You can assign multiple channels to each alert.
Creating Alerts
On the CONFIGURATIONS tab, click the ADD ALERT button and fill out the fields of the dialog box that appears.
| Field | Description |
|---|---|
Name |
The name of the alert |
Metric name |
The metric that you want to monitor |
Condition |
The condition to be met |
Value |
The value to which the metric is to be compared |
Grace Period |
The amount of time that the condition can exist before an alert is generated.
The grace period prevents occasional spikes from triggering alerts.
A setting of |
Notification Channels |
The notification channels that are associated with the alert. To create a notification channel, click ADD NOTIFICATION CHANNEL. |
Viewing History of Alert States
An alert is in one of three states:
-
OK. The alert condition is not violated.
-
Pending. The alert condition has been violated, but the grace period hasn’t expired yet.
-
Alerting. The grace period has expired. When an alert enters this state, a notification message is sent.
The EVENTS tab maintains records that report the history of alert state changes.
| Column | Description |
|---|---|
Created On |
The time when the alert was generated |
Status |
The status of the alert |
Message |
The alert message |
Alert |
The name of the alert |
Creating Notification Channels
Go to the NOTIFICATION CHANNELS tab and click ADD NOTIFICATION CHANNEL.
-
Enter the name of the notification channel.
-
In the Send with field, select either Email or SMS.
-
In the Send to field, enter an email address or a phone number.
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