Storm Health Check Indicators
Number of Working Nodes
Indicator: Number of Supervisors
Description: This indicator is used to check the number of available Supervisors in a cluster. If the number of available Supervisors in a cluster is less than 1, the cluster is unhealthy.
Recovery Guide: If the indicator is abnormal, go to the Streaming service instance page and click the host name of the unavailable Supervisor instance. View the host health status in the Overview area. If the host health status is Good, rectify the fault by referring to ALM-12007 Process Faults. If the status is not Good, rectify the fault by referring to the handling procedure of the ALM-12006 Node Faults.
Number of Idle Slots
Indicator: Number of Idle Slots
Description: This indicator is used to check the number of idle slots in a cluster. If the number of idle slots in a cluster is less than 1, the cluster is unhealthy.
Recovery Guide: If the indicator is abnormal, go to the Storm service instance page and check the health status of the Supervisor instance. If the health status of all Supervisor instances is Good, you need to expand the capacity of the Core node in the cluster. If not, rectify the fault by referring to ALM-12007 Process Faults.
Service Health Status
Indicator: Service Status
Description: This indicator is used to check whether the Storm service status is normal. If the status is abnormal, the service is unhealthy.
Recovery Guide: If the indicator is abnormal, rectify the fault by referring to the alarm "ALM-26051 Storm Service Unavailable".
Alarm Check
Indicator: Alarm Information
Description: This indicator is used to check whether alarms exist. If alarms exist, the service is unhealthy.
Recovery Guide: If this indicator is abnormal, you can rectify the fault by referring to the alarm handling guide.
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