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rename metric for apiserver request terminations and reword corresponding documentation

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Change-Id: I47a9c7b10614afe85bb652fa61984f91848d6d65
This commit is contained in:
Han Kang 2019-10-21 13:26:31 -07:00
parent 5e652fe126
commit f8f1def5f1
4 changed files with 14 additions and 12 deletions
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20
staging/src/k8s.io/apiserver/pkg/endpoints/metrics/metrics.go
View File

@ -189,10 +189,10 @@ var (
[]string{"requestKind"},
)
requestErrorsTotal = compbasemetrics.NewCounterVec(
requestTerminationsTotal = compbasemetrics.NewCounterVec(
&compbasemetrics.CounterOpts{
Name: "apiserver_request_errors_total",
Help: "Number of requests which have resulted in an apiserver response error.",
Name: "apiserver_request_terminations_total",
Help: "Number of requests which apiserver terminated in self-defense.",
StabilityLevel: compbasemetrics.ALPHA,
},
[]string{"verb", "group", "version", "resource", "subresource", "scope", "component", "code"},
@ -213,7 +213,7 @@ var (
WatchEvents,
WatchEventsSizes,
currentInflightRequests,
requestErrorsTotal,
requestTerminationsTotal,
}
)
@ -247,9 +247,11 @@ func UpdateInflightRequestMetrics(nonmutating, mutating int) {
currentInflightRequests.WithLabelValues(MutatingKind).Set(float64(mutating))
}
// RecordRequestError records the occurrence of a request error during apiserver handling (e.g. timeouts,
// maxinflight throttling, proxyHandler errors).
func RecordRequestError(req *http.Request, requestInfo *request.RequestInfo, component string, code int) {
// RecordRequestTermination records that the request was terminated early as part of a resource
// preservation or apiserver self-defense mechanism (e.g. timeouts, maxinflight throttling,
// proxyHandler errors). RecordRequestTermination should only be called zero or one times
// per request.
func RecordRequestTermination(req *http.Request, requestInfo *request.RequestInfo, component string, code int) {
if requestInfo == nil {
requestInfo = &request.RequestInfo{Verb: req.Method, Path: req.URL.Path}
}
@ -261,9 +263,9 @@ func RecordRequestError(req *http.Request, requestInfo *request.RequestInfo, com
// However, we need to tweak it e.g. to differentiate GET from LIST.
verb := canonicalVerb(strings.ToUpper(req.Method), scope)
if requestInfo.IsResourceRequest {
requestErrorsTotal.WithLabelValues(cleanVerb(verb, req), requestInfo.APIGroup, requestInfo.APIVersion, requestInfo.Resource, requestInfo.Subresource, scope, component, codeToString(code)).Inc()
requestTerminationsTotal.WithLabelValues(cleanVerb(verb, req), requestInfo.APIGroup, requestInfo.APIVersion, requestInfo.Resource, requestInfo.Subresource, scope, component, codeToString(code)).Inc()
} else {
requestErrorsTotal.WithLabelValues(cleanVerb(verb, req), "", "", "", requestInfo.Path, scope, component, codeToString(code)).Inc()
requestTerminationsTotal.WithLabelValues(cleanVerb(verb, req), "", "", "", requestInfo.Path, scope, component, codeToString(code)).Inc()
}
}

2
staging/src/k8s.io/apiserver/pkg/server/filters/maxinflight.go
View File

@ -178,7 +178,7 @@ func WithMaxInFlightLimit(
}
}
}
metrics.RecordRequestError(r, requestInfo, metrics.APIServerComponent, http.StatusTooManyRequests)
metrics.RecordRequestTermination(r, requestInfo, metrics.APIServerComponent, http.StatusTooManyRequests)
tooManyRequests(r, w)
}
}

2
staging/src/k8s.io/apiserver/pkg/server/filters/timeout.go
View File

@ -59,7 +59,7 @@ func WithTimeoutForNonLongRunningRequests(handler http.Handler, longRunning apir
postTimeoutFn := func() {
cancel()
metrics.RecordRequestError(req, requestInfo, metrics.APIServerComponent, http.StatusGatewayTimeout)
metrics.RecordRequestTermination(req, requestInfo, metrics.APIServerComponent, http.StatusGatewayTimeout)
}
return req, time.After(timeout), postTimeoutFn, apierrors.NewTimeoutError(fmt.Sprintf("request did not complete within %s", timeout), 0)
}

2
staging/src/k8s.io/kube-aggregator/pkg/apiserver/handler_proxy.go
View File

@ -98,7 +98,7 @@ func proxyError(w http.ResponseWriter, req *http.Request, error string, code int
return
}
// TODO: record long-running request differently? The long-running check func does not necessarily match the one of the aggregated apiserver
endpointmetrics.RecordRequestError(req, info, aggregatorComponent, code)
endpointmetrics.RecordRequestTermination(req, info, aggregatorComponent, code)
}
func (r *proxyHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {