istio_requests_total

• It's a COUNTER, which is a strictly increasing integer

Incoming requests

# req/s
sum by (response_code) (
  rate(
    istio_requests_total{
      reporter="destination",
      destination_service="myapp-mesh.default.svc.cluster.local"
    }[$__rate_interval]
  )
)

Outgoing requests

sum by (response_code) (
  rate(
    istio_requests_total{
      reporter="source",
      destination_service="anotherapp"
    }[$__rate_interval]
  )
)