There are several locations in Cloudera Manager where you can monitor clusters.
The Clusters tab in the top navigation bar displays each cluster's services in its own section, with the Cloudera Management Service separately below. You can select the following cluster-specific pages: hosts, reports, activities, and resource management.
Thetab displays the clusters being displayed by Cloudera Manager.
To display a cluster Status page, click the cluster name on thetab Status tab. The cluster Status page displays a table containing links to the Hosts page and the status pages of the services running in the cluster.
|Health issue||Indicates that the service has at least one health issue. The indicator shows the number of health issues at the highest
severity level. If there are Bad health test results, the indicator is red. If
there are no Bad health test results, but Concerning test results exist, then the
indicator is yellow. No indicator is shown if there are no Bad or Concerning
health test results.
Click the indicator to display the Health Issues pop-up dialog box.
By default only Bad health test results are shown in the dialog box. To display Concerning health test results, click the Also show n concerning issue(s) link.Click the link to display the Status page containing with details about the health test result.
|Configuration issue||Indicates that the service has at least one configuration issue. The indicator shows the number of configuration issues at the
highest severity level. If there are configuration errors, the indicator is red.
If there are no errors but configuration warnings exist, then the indicator is
yellow. No indicator is shown if there are no configuration
Click the indicator to display the Configuration Issues pop-up dialog box.
By default only notifications at the Error severity level are listed, grouped by service name are shown in the dialog box. To display Warning notifications, click the Also show n warning(s) link.Click the message associated with an error or warning to be taken to the configuration property for which the notification has been issued where you can address the issue. For more information see the topic Managing Services.
| Restart Needed
|Configuration modified||Indicates that at least one of a service's roles is running
with a configuration that does not match the current
configuration settings in Cloudera Manager.
Click the indicator to display the Stale Configurations page.To bring the cluster up-to-date, click the Refresh or Restart button on the Stale Configurations page to refresh the cluster, restart the cluster, or restart the stale service.
|Client configuration redeployment required||Indicates that the client configuration for a service
should be redeployed.
Click the indicator to display the Stale Configurations page. To bring the cluster up-to-date, click the Deploy Client Configuration button on the Stale Configurations page or manually redeploy the Client Configuration.
The right side of the status page displays charts that summarize resource utilization (IO, CPU usage) and processing metrics.