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app/{vminsert,vmselect}: export vminsert_request_duration_seconds and vmselect_request_duration_seconds histograms

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This commit is contained in:
Aliaksandr Valialkin 2021-07-07 13:25:16 +03:00
parent 766edbc421
commit ed944313b0
3 changed files with 10 additions and 0 deletions
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6
app/vminsert/main.go
View file

@ -6,6 +6,7 @@ import (
"net/http"
"strings"
"sync/atomic"
"time"
"github.com/VictoriaMetrics/VictoriaMetrics/app/vminsert/csvimport"
"github.com/VictoriaMetrics/VictoriaMetrics/app/vminsert/graphite"
@ -91,6 +92,9 @@ func Stop() {
// RequestHandler is a handler for Prometheus remote storage write API
func RequestHandler(w http.ResponseWriter, r *http.Request) bool {
startTime := time.Now()
defer requestDuration.UpdateDuration(startTime)
path := strings.Replace(r.URL.Path, "//", "/", -1)
switch path {
case "/prometheus/api/v1/write", "/api/v1/write":
@ -183,6 +187,8 @@ func RequestHandler(w http.ResponseWriter, r *http.Request) bool {
}
var (
requestDuration = metrics.NewHistogram(`vminsert_request_duration_seconds`)
prometheusWriteRequests = metrics.NewCounter(`vm_http_requests_total{path="/api/v1/write", protocol="promremotewrite"}`)
prometheusWriteErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/api/v1/write", protocol="promremotewrite"}`)

3
app/vmselect/main.go
View file

@ -80,6 +80,7 @@ var (
// RequestHandler handles remote read API requests
func RequestHandler(w http.ResponseWriter, r *http.Request) bool {
startTime := time.Now()
defer requestDuration.UpdateDuration(startTime)
// Limit the number of concurrent queries.
select {
case concurrencyCh <- struct{}{}:
@ -436,6 +437,8 @@ func sendPrometheusError(w http.ResponseWriter, r *http.Request, err error) {
}
var (
requestDuration = metrics.NewHistogram(`vmselect_request_duration_seconds`)
labelValuesRequests = metrics.NewCounter(`vm_http_requests_total{path="/api/v1/label/{}/values"}`)
labelValuesErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/api/v1/label/{}/values"}`)

1
docs/CHANGELOG.md
View file

@ -9,6 +9,7 @@ sort: 15
* FEATURE: vmagent: dynamically reload client TLS certificates from disk on every [mTLS connection](https://developers.cloudflare.com/cloudflare-one/identity/devices/mutual-tls-authentication). This should allow using `vmagent` with [Istio service mesh](https://istio.io/latest/about/service-mesh/). See [this feature request](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1420).
* FEATURE: reduce memory usage when performing heavy queries over big number of time series.
* FEATURE: log http request path plus all the query args on errors during request processing. Previously only http request path was logged without query args, so it could be hard debugging such errors.
* FEATURE: export `vmselect_request_duration_seconds` and `vminsert_request_duration_seconds` [VictoriaMetrics histograms](https://valyala.medium.com/improving-histogram-usability-for-prometheus-and-grafana-bc7e5df0e350) at `/metrics` page. These histograms can be used for determining latency distribution for the served requests.
* BUGFIX: vmagent: remove `{ %space %}` typo in `/targets` output. The typo has been introduced in v1.62.0. See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1408).
* BUGFIX: vmagent: fix CSS styles on `/targets` page. See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1422).