Help Center/ MapReduce Service/ User Guide/ MRS Cluster O&M/ Viewing Logs of an MRS Cluster/ Viewing Role Instance Logs of MRS Components
Updated on 2024-09-23 GMT+08:00
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Viewing Role Instance Logs of MRS Components

Once an MRS cluster is created, you can easily view the logs of each component role instance and download specific log files on the Manager page. This makes it easier to quickly locate and analyze any issues.

The operations described in this section only apply to MRS 3.x or later.

Viewing Role Instance Logs

  1. Log in to FusionInsight Manager.
  2. Choose Cluster > Services, and click a service name. Then click the Instances tab of the service and click the name of the target instance to access the instance status page.
  3. In the Log area, click the name of a log file to preview its content online.

    • On the Hosts page, click a host name. In the instance list of the host, you can view the log files of all role instances on the host.
    • By default, a maximum of 100 lines of logs can be displayed. You can click Load More to view more logs. Click Download to download the log file to the local PC. For how to download service logs in batches, see Downloading MRS Cluster Logs.
    Figure 1 Viewing instance logs