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Use http_request_duration_seconds for RED metrics

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Stefan Prodan
2018-05-07 11:03:02 +03:00
parent 65d03a557b
commit e24c83525a
2 changed files with 6 additions and 6 deletions
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docs/3-monitoring.md
+5 -5
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@@ -7,26 +7,26 @@ Prometheus query examples of key metrics to measure and alert upon.
**Request Rate** - the number of requests per second by instance
```
sum(irate(http_requests_count{job=~".*podinfo"}[1m])) by (instance)
sum(irate(http_request_duration_seconds_count{job=~".*podinfo"}[1m])) by (instance)
```
**Request Errors** - the number of failed requests per second by URL path
```
sum(irate(http_requests_count{job=~".*podinfo", status=~"5.."}[1m])) by (path)
sum(irate(http_request_duration_seconds_count{job=~".*podinfo", status=~"5.."}[1m])) by (path)
```
**Request Duration** - average duration of each request over 10 minutes
```
sum(rate(http_requests_sum{job=~".*podinfo"}[10m])) /
sum(rate(http_requests_count{job=~".*podinfo"}[10m]))
sum(rate(http_request_duration_seconds_sum{job=~".*podinfo"}[10m])) /
sum(rate(http_request_duration_seconds_count{job=~".*podinfo"}[10m]))
```
**Request Latency** - 99th percentile request latency over 10 minutes
```
histogram_quantile(0.99, sum(rate(http_requests_bucket{job=~".*podinfo"}[10m])) by (le))
histogram_quantile(0.99, sum(rate(http_request_duration_seconds_bucket{job=~".*podinfo"}[10m])) by (le))
```
**Goroutines Rate** - the number of running goroutines over 10 minutes
pkg/server/instrument.go
+1 -1
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@@ -22,7 +22,7 @@ func NewInstrument() *Instrument {
// used for monitoring and alerting (RED method)
histogram := prometheus.NewHistogramVec(prometheus.HistogramOpts{
Subsystem: "http",
Name: "requests",
Name: "request_duration_seconds",
Help: "Seconds spent serving HTTP requests.",
Buckets: prometheus.DefBuckets,
}, []string{"method", "path", "status"})