Monitoring Service Status

From a service page, you can:
  • Monitor the status of the services running on your clusters.
  • Manage the services and roles in your clusters.
  • Add new services.
  • Access the client configuration files generated by Cloudera Manager that enable Hadoop client users to work with the HDFS, MapReduce, HBase, and YARN services you added. (These configuration files are normally deployed automatically when you install a cluster or add a service).
  • View the maintenance mode status of a cluster.

You can also pull down a menu from an individual service name to go directly to one of the tabs for that service to its Status, Instances, Commands, Configuration, Audits, or Charts Library tabs.

Viewing the URLs of the Client Configuration Files

To allow Hadoop client users to work with the services you created, Cloudera Manager generates client configuration files that contain the relevant configuration files with the settings from your services. These files are deployed automatically by Cloudera Manager based on the services you have installed, when you add a service, or when you add a Gateway role on a host.

You can manually download and distribute these client configuration files to the users of a service, if necessary.

The Actions > Client Configuration URLs command opens a pop-up that displays links to the client configuration zip files created for the services installed in your cluster. You can download these zip files by clicking the link.

The Actions button is not enabled if you are viewing status for a point of time in the past.

See Client Configuration Files for more information on this topic.

Viewing the Status of a Service Instance

Do one of the following:
  • In Home page, select ClusterName > ServiceName.
  • Select Clusters > ClusterName > ServiceName.

This opens the Status page where you can view a variety of information about a service and its performance. See Viewing Service Status for details.

Viewing the Health and Status of a Role Instance

Click the role instance under the Role Counts column.

If there is just one instance of this role, this opens the Status tab for the role instance.

If there are multiple instances of a role, clicking the role link under Role Counts will open the Instances tab for the service, showing instances of the role type you have selected. See Viewing Role Instance Status for details.

If you are viewing a point in time in the past, the Role Count links will be greyed out, but still functional. Their behavior will depend on whether historical data is available for the role instance.

Viewing the Maintenance Mode Status of a Cluster

Select Actions > View Maintenance Mode Status... button to view the status of your cluster in terms of which components (service, roles, or hosts) are in maintenance mode. This pops up a dialog box that shows the components in your cluster that are in maintenance mode, and indicates which are in effective maintenance mode as well as those that have been explicitly placed into maintenance mode. (See Maintenance Mode for an explanation of explicit maintenance mode and effective maintenance mode.)

From this dialog box you can select any of the components shown there and remove them from maintenance mode.

If individual services are in maintenance mode, you will see the maintenance mode icon next to the Actions button for that service.

The Actions button is not enabled if you are viewing status for a point of time in the past.