Help Center > > User Guide> MRS Manager Operation Guide (Applicable to 2.x and Earlier Versions)> Alarm Reference (Applicable to Versions Earlier Than MRS 3.x)> ALM-18003 NodeManager Unhealthy

ALM-18003 NodeManager Unhealthy

Updated at: Aug 17, 2021 GMT+08:00


The system checks the number of abnormal NodeManager nodes every 30 seconds, and compares the number of abnormal nodes with the threshold. The Unhealthy Nodes indicator has a default threshold. This alarm is generated when the value of the Unhealthy Nodes indicator exceeds the threshold.

This alarm is cleared when the value of Unhealthy Nodes is less than or equal to the threshold.


Alarm ID

Alarm Severity

Auto Clear








Specifies the service for which the alarm is generated.


Specifies the role for which the alarm is generated.


Specifies the host for which the alarm is generated.

Trigger condition

Generates an alarm when the actual indicator value exceeds the specified threshold.

Impact on the System

  • The faulty NodeManager node cannot provide the Yarn service.
  • The number of containers decreases, so the cluster performance deteriorates.

Possible Causes

  • The disk space of the host where the NodeManager node resides is insufficient.
  • User omm does not have the permission to access a local directory on the NodeManager node.


  1. Collect fault information.

    1. On MRS Manager, choose System > Export Log.
    2. Contact the O&M personnel and send the collected logs.



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