Istio

Setup

Prometheus metrics for Istio can be enabled by following the setup instructions documented here. Once the exporter is set up, check the following metrics to verify the setup:

• istio_build

Metrics

Request, Errors, and Latency

Metric	KPI
Request Counter istio_requests_total	Request Rate rate(istio_requests_total{reporter="destination"}[5m])
Error Counter istio_requests_total	Error Ratio (server errors) rate(istio_requests_total{reporter="destination", response_code="5.."}[5m])/ rate(istio_requests_total[5m]) Error Ratio (client errors) rate(istio_requests_total{reporter="destination", response_code="4.."}[5m])/ rate(istio_requests_total[5m])
Latency Histogram istio_request_duration_milliseconds	Latency Average rate(istio_request_duration_milliseconds_sum[5m])/ rate(istio_request_duration_milliseconds_count[5m]) Latency P99 histogram_quantile ( 0.99, sum(rate(istio_request_duration_milliseconds_bucket[5m]) > 0) by (le) )

Resource

Metric	KPI
Network Bytes Received istio_request_bytes_sum Network Bytes Transmitted istio_response_bytes_sum	Data transfer rate rate(istio_request_bytes_sum[5m) rate(istio_response_bytes_sum[5m)

Alerts

KPI	Alert
Request Rate	RequestRateAnomaly
Error Rate	ErrorRatioBreach ErrorBuildup based on a 99.9 SLO
Latency Average Latency P99	LatencyAverageBreach LatencyAverageAnomaly LatencyP99ErrorBuildup
Network Bytes	ResourceRateAnomaly

KPI Dashboard

Istio KPI Dashboard shows all the above mentioned KPIs