Adding different metricies in grafana from prometheus

Question

I have different metrices in prometheus counter_metrics a, couneter_metrices b and I want a singlestat for the count of all the different request metrics.

How am I able to fetch this?

(sum(couneter_metrics{instance="a,job="b"}))+

Solution

For the singlestat panel, you can just sum the two metrics and then add them together. Here is an example with two different metrics:

sum(prometheus_local_storage_memory_series) + sum(counters_logins)

Recommended reading, just in case you are doing anything with rates as well: https://www.robustperception.io/rate-then-sum-never-sum-then-rate/