Prometheus - How to “join” two metrics and calculate the difference?

[ivanahuckova]

Hello @michaelblack! Check out this thread where was similar question discussed. I hope it is going to help!

Addition and division in metrics

Hi! Have a simple math expression: (metric_name1{env="prod", status="1"} + metric_name1{env="prod", status="2"}) / metric_name1{env="prod", status="3"} But all what I have as result is n/a Is it possible to do some math expression with the same metric in prometheus? or I’m doing something illigal