A device is missing Interface metrics and data.
When viewing the device in the Monitored Devices Inventory, looking at the Polled Metric Families tab, the Interface Metric Family shows a status of Discovering.
The status does not change and remains that way, showing a Last Discovered state weeks ago.
Choosing Stop Polling followed by Start Polling doesn't change the problem.
The discovery logging for the device from the http://<DA_HOST>:8581/dcdebug page shows what appears to be current updated discovery runs. It has no messaging from the Last Discovered Date shown for the Interface Metric Family.
Performance Management r20.2.2
Unable to determine. Before a cause was determined the device was deleted and rediscovered. While that resolved the issue, it prevented further analysis being the only known device showing these symptoms.
At this time the known solution is deleting and rediscovering the affected device.
If this is not possible please open a new Support Case for further investigation. Be sure to reference this Knowledge Base article (Article ID 200914) in the new Support Case.
If possible please also include output from the below URLs when opening a new Support Case for this problem.
Per engineering if we see this in the future we'd want to examine the following details. These are things that can be checked against a device showing these symptoms to determine additional information.