ALM-18003 NodeManager Unhealthy (For MRS 2.x or Earlier)
Description
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.
Attribute
Alarm ID |
Alarm Severity |
Auto Clear |
---|---|---|
18003 |
Major |
Yes |
Parameters
Parameter |
Description |
---|---|
ServiceName |
Specifies the service for which the alarm is generated. |
RoleName |
Specifies the role for which the alarm is generated. |
HostName |
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.
Procedure
- Collect fault information.
- On MRS Manager, choose System > Export Log.
- Contact the O&M engineers and send the collected logs.
Reference
None
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