Database Reference
In-Depth Information
Configuring events and alerts
Alerts
are messages that are configured to be triggered by an event. Alerts are configured
to inform the occurrence of events that need special attention.
The following are the steps to configure an event. For this example, we will configure an
event to monitor HDFS free space:
1. Navigate to the
Home
page from the Cloudera Manager toolbar.
2. Select the HDFS service to navigate to the HDFS service details page.
3. Navigate to
Configuration
|
View and Edit
and select the
Monitoring
section.
4. Click on
Service-Wide
to display all the configuration parameters for the HDFS
service as shown in the following screenshot:
5. The default value configured for the
HDFS Free Space Monitoring Thresholds
property are
20.0%
and
10.0%
for the
Warning
and
Critical
events, respectively.
This means that a
Warning
event will be triggered when the free space on HDFS
reaches 20 percent and a
Critical
event will be triggered when the HDFS free
space reaches 10 percent.
For this illustration, let's update the values
25%
and
20%
for the
Warning
and
Critical
events respectively, as shown in the following screenshot:
