Help Center/ MapReduce Service/ User Guide/ Managing Clusters/ Managing MRS Cluster Nodes/ Starting and Stopping All Roles on an MRS Cluster Node
Updated on 2024-09-23 GMT+08:00
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Starting and Stopping All Roles on an MRS Cluster Node

When a host or node is faulty, you may need to stop all roles on the host on MRS to check the host. After the fault is rectified, start all roles on the host to recover host services.

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.

Starting or Stopping a Node Role on the Console

  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 MRS details page, click Nodes.
  4. Unfold the node group information and select the check box of the target node.
  5. Choose Node Operation > Start All Roles or Stop All Roles to perform the required operation.

Starting or Stopping Node Roles on Manager

  1. Log in to the cluster Manager.
  2. Click Hosts to go to the host list page.

    For clusters of MRS 2.x or earlier, click Hosts.

  3. Select the check box of the target hosts.
  4. Select Start All Instances or Stop All Instances from the More drop-down list to start or stop all role instances.