Database Reference
In-Depth Information
6. Once done, save the changes by clicking on the
Save Changes
button.
7. Now, whenever the free space on HFDS goes below 25 percent, a
Warning
event
will be generated. Similarly, if the free space on HDFS goes below 20 percent, a
Critical
event will be generated.
The following screenshot shows the event generated when the free space on
HDFS is below the set critical threshold of 20 percent:
You will observe that the event is labeled as
Alert
. This is because the HDFS ser-
vice is configured to alert us if the service's status becomes bad.
8. To see more details for this alert, click on the
Expand
link. You should see addi-
tional details as shown in the following screenshot:
9. To see the list of all alerts configured, navigate to the
Administration
menu of
the Cloudera Manager toolbar and select
Alerts
. The
Alerts
page is displayed as
shown in the following screenshot: