Metrics suddenly stops flowing

[MikaelJ]

Hi,

I've noticed that for some of my sites metrics can suddenly stops flowing.

I've already deleted old statistics file and usage reports.

Connectivity is at 100% all the time, is there a way within monitor to send a notification when there is no metrics data collected for specific ArcGIS Server?

Regards,

MJ

[StevenBeothy]

Off the top of my head the two checks I would perform first is check to see if ArcGIS Monitor's license has expired and second confirm that no Incidents are active. Both of these could be a reason why agents are connected but metrics are no longer being captured. 

[Timothy]

Your whole ArcGIS Monitor deployment? My ArcGIS Monitor Server stopped recording metrics and connectively was fine to the agents.

After working extensively with Esri Support it was found that the unique identifier metric_id hit its 'INT' field type limit of 2147483647 and stops recording metrics.
Support gave me a fix by changing the field to 'BIGINT' (new max value 9223372036854775807) amongst updating some other tables and dependant views. 

You can check by looking at the next sequence number in PostgreSQL.
Hope this helps someone, cost me plenty of time.