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Istio metrics can be customized to include other attributes from Envoy such as subject field of peer certificate. https://www.envoyproxy.io/docs/envoy/latest/intro/arch_overview/advanced/attributes
Example PromQL
Resource
| Service | Type | PromQL | Notes |
|---|---|---|---|
| HTTP | Queries | sum(irate(istio_requests_total{reporter="destination",destination_workload=~"services-orchestrator"}[5m])) | inbound |
| sum(irate(istio_requests_total{reporter="source",source_workload="services-orchestrator"}[5m])) by (destination_workload) | outbound | ||
| Errors | sum(irate(istio_requests_total{reporter="destination",destination_workload=~"services-orchestrator",response_code!~"5.*"}[5m])) / sum(irate(istio_requests_total{reporter="destination",destination_workload=~"services-orchestrator"}[5m])) | inbound | |
| sum(irate(istio_requests_total{reporter="source",source_workload=~"services-orchestrator",response_code!~"5.*"}[5m])) by (destination_workload) / sum(irate(istio_requests_total{reporter="source",source_workload=~"services-orchestrator"}[5m])) by (destination_workload) | outbound | ||
| Latency | histogram_quantile(0.90, sum(irate(istio_request_duration_milliseconds_bucket{reporter="destination",destination_workload="services-orchestrator"}[1m])) by (le)) / 1000 | P90 |
In-progress requests
These do not appear to be available with Istio, further investigation is required.
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