When attempting to monitor a Linux host using the DellUnixAgent agent, no data is collected. Referring to the agent logs (when DEBUG2 is enabled), the following can be found:
YYYY-MM-DD HH:MM:SS.000 DEBUG2 [Quartz-27883] com.quest.glue.core.agent.AgentInteractionHandler - Agent method threw exception: public abstract com.quest.glue.api.services.activities.ActivityAction$ExecutionResultType com.quest.glue.api.services.activities.ActivityAction.perform() throws java.lang.InterruptedException,java.lang.Exception
Caused by: java.lang.NullPointerException: Cannot create a node with a null name element
An internal element holds a null value, therefore resulting in a NullPointerException when attempting to create a required topology object.
Within the Agent Properties for the problematic agent, set the value Include SAN mounted disks to false.
This has been identified as product defect IC-3866, and the fix is available in the Infrastructure cartridge version 5.9.1.