E-MapReduce:Query clusters

Query clusters

1. Log on to the EMR console. In the left-side navigation pane, click EMR on ECS.

2. In the top navigation bar, select the region where your cluster resides and select a resource group based on your business requirements.

3. On the EMR on ECS page, view the basic information about the clusters that belong to your account and the operations that you can perform on these clusters.

   Parameter	Description
   Cluster ID/Name	The ID and name of the cluster.
   Cluster Type	The type of the cluster.
   Status	The status of the cluster.
   Monitoring Info	Click the icon to go to the Monitoring tab of the cluster to view monitoring information. If events are pending, the number of pending events is displayed next to the icon.
   Created At/Run at	Created At: the time when the cluster was created. Run at: the uptime of the cluster. After the cluster is released, the system stops measuring the time.
   Billing Method	The billing method of the cluster.
   Cluster Tag	The tags that are added to the cluster. For information about how to manage tags, see Manage and use tags.
   Actions	The operations that you can perform on the cluster. The following operations are supported: Services: View and manage services on the Services tab. Nodes: View information about node groups, add node groups, and expand disks on the Nodes tab. Switch to Subscription: Move the pointer over the icon and select Switch to Subscription in the Actions column of the cluster that you want to manage. You can perform this operation only on pay-as-you-go clusters. For more information, see Switch from pay-as-you-go to subscription. Renew and Auto-renewal: Move the pointer over the icon and select Renew or Auto-renewal in the Actions column of the cluster that you want to manage. Only subscription clusters can be renewed and support auto-renewal. For more information, see Renewal policy. Export Service Configuration: Export service configurations of EMR for data backup, data migration, and data restoration. For more information, see Export and import service configurations. Clone: Move the pointer over the icon and select Clone in the Actions column of the cluster that you want to manage. For more information, see Clone a cluster. Release: Move the pointer over the icon and select Release in the Actions column of the cluster that you want to manage. Only pay-as-you-go clusters can be released. For more information about how to release a cluster, see Release a cluster.

View details of a cluster

1. On the EMR on ECS page, find the desired cluster and click the cluster name.

2. On the Basic Information tab, view detailed information about the cluster.

   The Basic Information tab displays detailed information about the cluster in the following sections: Cluster Information, Software Information, Network Hardware, and Security.

   Note

   The information displayed on this tab varies based on the cluster parameters that you configured when you created the cluster.

   Section	Description
   Cluster Information	This section displays the basic information about the cluster, such as the cluster name, cluster ID, creation time, usage of the high availability feature, and billing method.
   Software Information	This section displays the software information, such as the cluster version, cluster type, software information, and Hive metadata type.
   Network Hardware	This section displays information such as the zone, virtual private cloud (VPC), and hardware configurations.
   Security	This section displays information such as the key pair, Elastic Compute Service (ECS) instance role, security group, and cluster service role.

References

For information about how to query clusters by calling the ListClusters API operation, see ListClusters.