Help Center/ MapReduce Service/ Help Panel/ MRS/ MRS Usage Guidelines
Updated on 2024-09-04 GMT+08:00

MRS Usage Guidelines

Accessing Manager

The Manager interface allows you to easily monitor, configure, manage, and maintain MRS clusters.

  1. On the Overview page, locate Cluster Management in the Basic Information area.
  2. 2. Click Access Manager. Bind an EIP and add a security group rule to access the MRS Manager login page.

The default account for logging in to Manager is admin, and the password is that you set during cluster creation.

For detailed operations, refer to the following:

Logging In to a Cluster Node

In an MRS cluster, a node is an ECS. You can log in to an MRS cluster node using either of the following methods:

  • Click the node name to go to the ECS management console. Use the "Remote Login" function provided by the ECS to log in to the MRS cluster node.
  • Log in to the system in SSH mode (password or key).

For details, see Logging In to an ECS.

Accessing Web UIs of Open Source Components Managed in MRS Clusters

Web UIs of different components are created and hosted on the Master or Core nodes in the MRS cluster by default. You can view information about the components on these web UIs.

  1. You are advised to use an EIP to access the web UI of each open-source component.
  2. Access the web UIs. For details, see Web UIs of Open Source Components. For details about the default ports of open-source components, see Common Ports of Components.

Using an MRS Client

An MRS cluster provides a client for you to connect to a server, view task results, or manage data.

  • Updating a client configuration file
    • Before using an MRS client, download and update the client configuration file if service configuration parameters are modified and a service is restarted or the service is merely restarted on MRS Manager.
    • During cluster creation, the original client is stored in the /opt/client directory on all nodes in the cluster by default. After the cluster is created, only the client of a Master node can be directly used. To use the client of a Core node, you need to update the client configuration file first.