E-MapReduce:Clone a cluster

Prerequisites

A DataLake cluster, Dataflow cluster, online analytical processing (OLAP) cluster, DataServing cluster, or custom cluster is created. For more information, see Create a cluster.

Limits

• If the product version, business scenario, or region of an existing cluster is no longer supported, the cluster cannot be cloned.

• If an existing cluster has multiple core node groups, the cluster cannot be cloned.

• Take note of the following items when you clone a cluster:

  • The auto scaling rules in the cluster cannot be cloned to the new cluster.

  • The bootstrap action that takes effect on a node group in the cluster cannot be cloned to the new cluster.

  • Key information about the cluster, such as passwords, cannot be cloned to the new cluster.

  • If the cluster has multiple task node groups, and the vSwitch or billing method of the task node groups is different from the vSwitch or billing method of the cluster, the task node groups cannot be cloned to the new cluster.

  • If the cluster has multiple task node groups, and the task node groups have multiple types of instances, the task node groups cannot be cloned to the new cluster.

  • The modifications to the services of the cluster after the cluster is created cannot be cloned to the new cluster. However, the latest custom software configurations for services in the cluster can be cloned to the new cluster.

  • The modifications to files or content of nodes in the cluster, such as JAR packages, after the cluster is created cannot be cloned to the new cluster.

Precautions

Clusters that were created before September 7, 2022 and are in the Create Failed, Release Failed, or Released state cannot be cloned because the cluster information is not complete.

Procedure

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 in which your cluster resides and select a resource group based on your business requirements.

3. On the EMR on ECS page, find the cluster that you want to clone, move the pointer over the icon in the Actions column, and then select Clone.

4. In the Cluster Cloning Reminder message, read the information and click Continue to Clone.

5. In the cluster creation wizard, specify values for parameters that need to be manually configured. In the Confirm step, confirm all the configurations, read the terms of service, select the check box, and then click Confirm.

   Note

   The parameters that need to be manually configured vary based on the specific cluster information.