Help Center/ MapReduce Service/ User Guide/ Managing Clusters/ Managing an MRS Cluster/ Starting and Stopping an MRS Cluster
Updated on 2025-08-09 GMT+08:00
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Starting and Stopping an MRS Cluster

You can stop an MRS cluster using the MRS console or Manager when it is no longer needed or has been fixed due to a fault. Once stopped, the cluster's components will no longer serve external systems.

You can also start a stopped cluster.

Prerequisites

  • The IAM users have been synchronized in advance. You can do this by clicking Synchronize next to IAM User Sync on the Dashboard page of the cluster details.
  • You have logged in to MRS Manager. For how to log in, see Accessing MRS Manager.
  1. Log in to the MRS console.
  2. On the Active Clusters page, select a running cluster and click its name to switch to the cluster details page.
  3. On the cluster details page, choose Management Operations > Stop All Components in the upper right corner.

    After the cluster stops, the status of all components in the component list changes to Stopped.

    This operation may interrupt jobs, cause data loss, or stop the cluster, adversely affecting service processing.

  4. For a cluster where all components have been stopped, choose Management Operations > Start All Components in the upper right corner of the cluster details page, perform operations as prompted, and wait until the components start.

    After the operation is successful, Operating Status of the corresponding components changes to Started.

  • MRS 3.x and later versions:
    1. Log in to FusionInsight Manager of the MRS cluster.

      For details about how to log in to FusionInsight Manager, see Accessing MRS Manager.

    1. Click next to the target cluster and select Stop. Enter the password of the cluster administrator. In the Stop Cluster dialog box that is displayed, click OK. Wait until the cluster is stopped.
  • MRS 2.x and earlier versions:
    1. Log in to FusionInsight Manager of the MRS cluster.

      For details about how to log in to FusionInsight Manager, see Accessing MRS Manager.

    2. Click Services.
    3. In the upper part of the service list, choose More > Start Cluster or Stop Cluster accordingly.

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Parent Topic: Managing an MRS Cluster