Strange NoData Behaviour with an Input of Array

Hello,

I have 5 servers which has Graylog integrations. I use Graylog as datasource and i group the hostnames. This gives me an array of 5 with respectable data of each server.

The problem is if there is no data coming through from one the servers, it returns 0. But this case occurs if there was a data before, if i create the alert or the dashboard when that particular connection point returns not data, i get an array of 4 as a result.

The second behaviour is as expected, maybe the first one is too but i want to check the count of the current connections too. Let’s say, if it’s not 5 then create an alarm for me. I can also give conditions around the value of 0 but i want to cover this case too : if i ever want to reduce the server count to 4, the dashboard will countinue to return an array of 5 with one of them being 0 all the time.

Is it possible to drop that member if there is no data only from that member?

Thanks in advance