mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-11-21 14:44:00 +00:00
6721e47ae9
Update GOMAXPROCS to limits set via cgroups. This should reduce CPU trashing and reduce memory usage for cases when VictoriaMetrics components run in containers with CPU limits. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/685
375 lines
14 KiB
Go
375 lines
14 KiB
Go
package main
|
|
|
|
import (
|
|
"errors"
|
|
"flag"
|
|
"fmt"
|
|
"net/http"
|
|
"os"
|
|
"runtime"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/app/vmselect/netstorage"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/app/vmselect/prometheus"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/app/vmselect/promql"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/auth"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/buildinfo"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/cgroup"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/envflag"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/flagutil"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/fs"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/httpserver"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/procutil"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/storage"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/timerpool"
|
|
"github.com/VictoriaMetrics/metrics"
|
|
)
|
|
|
|
var (
|
|
httpListenAddr = flag.String("httpListenAddr", ":8481", "Address to listen for http connections")
|
|
cacheDataPath = flag.String("cacheDataPath", "", "Path to directory for cache files. Cache isn't saved if empty")
|
|
maxConcurrentRequests = flag.Int("search.maxConcurrentRequests", getDefaultMaxConcurrentRequests(), "The maximum number of concurrent search requests. "+
|
|
"It shouldn't be high, since a single request can saturate all the CPU cores. See also -search.maxQueueDuration")
|
|
maxQueueDuration = flag.Duration("search.maxQueueDuration", 10*time.Second, "The maximum time the request waits for execution when -search.maxConcurrentRequests limit is reached")
|
|
minScrapeInterval = flag.Duration("dedup.minScrapeInterval", 0, "Remove superflouos samples from time series if they are located closer to each other than this duration. "+
|
|
"This may be useful for reducing overhead when multiple identically configured Prometheus instances write data to the same VictoriaMetrics. "+
|
|
"Deduplication is disabled if the -dedup.minScrapeInterval is 0")
|
|
resetCacheAuthKey = flag.String("search.resetCacheAuthKey", "", "Optional authKey for resetting rollup cache via /internal/resetRollupResultCache call")
|
|
storageNodes = flagutil.NewArray("storageNode", "Addresses of vmstorage nodes; usage: -storageNode=vmstorage-host1:8401 -storageNode=vmstorage-host2:8401")
|
|
)
|
|
|
|
func getDefaultMaxConcurrentRequests() int {
|
|
n := runtime.GOMAXPROCS(-1)
|
|
if n <= 4 {
|
|
n *= 2
|
|
}
|
|
if n > 16 {
|
|
// A single request can saturate all the CPU cores, so there is no sense
|
|
// in allowing higher number of concurrent requests - they will just contend
|
|
// for unavailable CPU time.
|
|
n = 16
|
|
}
|
|
return n
|
|
}
|
|
|
|
func main() {
|
|
// Write flags and help message to stdout, since it is easier to grep or pipe.
|
|
flag.CommandLine.SetOutput(os.Stdout)
|
|
envflag.Parse()
|
|
buildinfo.Init()
|
|
logger.Init()
|
|
cgroup.UpdateGOMAXPROCSToCPUQuota()
|
|
|
|
logger.Infof("starting netstorage at storageNodes %s", *storageNodes)
|
|
startTime := time.Now()
|
|
storage.SetMinScrapeIntervalForDeduplication(*minScrapeInterval)
|
|
if len(*storageNodes) == 0 {
|
|
logger.Fatalf("missing -storageNode arg")
|
|
}
|
|
netstorage.InitStorageNodes(*storageNodes)
|
|
logger.Infof("started netstorage in %.3f seconds", time.Since(startTime).Seconds())
|
|
|
|
if len(*cacheDataPath) > 0 {
|
|
tmpDataPath := *cacheDataPath + "/tmp"
|
|
fs.RemoveDirContents(tmpDataPath)
|
|
netstorage.InitTmpBlocksDir(tmpDataPath)
|
|
promql.InitRollupResultCache(*cacheDataPath + "/rollupResult")
|
|
} else {
|
|
netstorage.InitTmpBlocksDir("")
|
|
promql.InitRollupResultCache("")
|
|
}
|
|
concurrencyCh = make(chan struct{}, *maxConcurrentRequests)
|
|
|
|
go func() {
|
|
httpserver.Serve(*httpListenAddr, requestHandler)
|
|
}()
|
|
|
|
sig := procutil.WaitForSigterm()
|
|
logger.Infof("service received signal %s", sig)
|
|
|
|
logger.Infof("gracefully shutting down http service at %q", *httpListenAddr)
|
|
startTime = time.Now()
|
|
if err := httpserver.Stop(*httpListenAddr); err != nil {
|
|
logger.Fatalf("cannot stop http service: %s", err)
|
|
}
|
|
logger.Infof("successfully shut down http service in %.3f seconds", time.Since(startTime).Seconds())
|
|
|
|
logger.Infof("shutting down neststorage...")
|
|
startTime = time.Now()
|
|
netstorage.Stop()
|
|
if len(*cacheDataPath) > 0 {
|
|
promql.StopRollupResultCache()
|
|
}
|
|
logger.Infof("successfully stopped netstorage in %.3f seconds", time.Since(startTime).Seconds())
|
|
|
|
fs.MustStopDirRemover()
|
|
|
|
logger.Infof("the vmselect has been stopped")
|
|
}
|
|
|
|
var concurrencyCh chan struct{}
|
|
|
|
var (
|
|
concurrencyLimitReached = metrics.NewCounter(`vm_concurrent_select_limit_reached_total`)
|
|
concurrencyLimitTimeout = metrics.NewCounter(`vm_concurrent_select_limit_timeout_total`)
|
|
|
|
_ = metrics.NewGauge(`vm_concurrent_select_capacity`, func() float64 {
|
|
return float64(cap(concurrencyCh))
|
|
})
|
|
_ = metrics.NewGauge(`vm_concurrent_select_current`, func() float64 {
|
|
return float64(len(concurrencyCh))
|
|
})
|
|
)
|
|
|
|
func requestHandler(w http.ResponseWriter, r *http.Request) bool {
|
|
startTime := time.Now()
|
|
// Limit the number of concurrent queries.
|
|
select {
|
|
case concurrencyCh <- struct{}{}:
|
|
defer func() { <-concurrencyCh }()
|
|
default:
|
|
// Sleep for a while until giving up. This should resolve short bursts in requests.
|
|
concurrencyLimitReached.Inc()
|
|
t := timerpool.Get(*maxQueueDuration)
|
|
select {
|
|
case concurrencyCh <- struct{}{}:
|
|
timerpool.Put(t)
|
|
defer func() { <-concurrencyCh }()
|
|
case <-t.C:
|
|
timerpool.Put(t)
|
|
concurrencyLimitTimeout.Inc()
|
|
err := &httpserver.ErrorWithStatusCode{
|
|
Err: fmt.Errorf("cannot handle more than %d concurrent search requests during %s; possible solutions: "+
|
|
"increase `-search.maxQueueDuration`, increase `-search.maxConcurrentRequests`, increase server capacity",
|
|
*maxConcurrentRequests, *maxQueueDuration),
|
|
StatusCode: http.StatusServiceUnavailable,
|
|
}
|
|
httpserver.Errorf(w, r, "%s", err)
|
|
return true
|
|
}
|
|
}
|
|
|
|
path := strings.Replace(r.URL.Path, "//", "/", -1)
|
|
if path == "/internal/resetRollupResultCache" {
|
|
if len(*resetCacheAuthKey) > 0 && r.FormValue("authKey") != *resetCacheAuthKey {
|
|
sendPrometheusError(w, r, fmt.Errorf("invalid authKey=%q for %q", r.FormValue("authKey"), path))
|
|
return true
|
|
}
|
|
promql.ResetRollupResultCache()
|
|
return true
|
|
}
|
|
|
|
p, err := httpserver.ParsePath(path)
|
|
if err != nil {
|
|
httpserver.Errorf(w, r, "cannot parse path %q: %s", path, err)
|
|
return true
|
|
}
|
|
at, err := auth.NewToken(p.AuthToken)
|
|
if err != nil {
|
|
httpserver.Errorf(w, r, "auth error: %s", err)
|
|
return true
|
|
}
|
|
switch p.Prefix {
|
|
case "select":
|
|
return selectHandler(startTime, w, r, p, at)
|
|
case "delete":
|
|
return deleteHandler(startTime, w, r, p, at)
|
|
default:
|
|
// This is not our link
|
|
return false
|
|
}
|
|
}
|
|
|
|
func selectHandler(startTime time.Time, w http.ResponseWriter, r *http.Request, p *httpserver.Path, at *auth.Token) bool {
|
|
if strings.HasPrefix(p.Suffix, "prometheus/api/v1/label/") {
|
|
s := p.Suffix[len("prometheus/api/v1/label/"):]
|
|
if strings.HasSuffix(s, "/values") {
|
|
labelValuesRequests.Inc()
|
|
labelName := s[:len(s)-len("/values")]
|
|
httpserver.EnableCORS(w, r)
|
|
if err := prometheus.LabelValuesHandler(startTime, at, labelName, w, r); err != nil {
|
|
labelValuesErrors.Inc()
|
|
sendPrometheusError(w, r, err)
|
|
return true
|
|
}
|
|
return true
|
|
}
|
|
}
|
|
|
|
switch p.Suffix {
|
|
case "prometheus/api/v1/query":
|
|
queryRequests.Inc()
|
|
httpserver.EnableCORS(w, r)
|
|
if err := prometheus.QueryHandler(startTime, at, w, r); err != nil {
|
|
queryErrors.Inc()
|
|
sendPrometheusError(w, r, err)
|
|
return true
|
|
}
|
|
return true
|
|
case "prometheus/api/v1/query_range":
|
|
queryRangeRequests.Inc()
|
|
httpserver.EnableCORS(w, r)
|
|
if err := prometheus.QueryRangeHandler(startTime, at, w, r); err != nil {
|
|
queryRangeErrors.Inc()
|
|
sendPrometheusError(w, r, err)
|
|
return true
|
|
}
|
|
return true
|
|
case "prometheus/api/v1/series":
|
|
seriesRequests.Inc()
|
|
httpserver.EnableCORS(w, r)
|
|
if err := prometheus.SeriesHandler(startTime, at, w, r); err != nil {
|
|
seriesErrors.Inc()
|
|
sendPrometheusError(w, r, err)
|
|
return true
|
|
}
|
|
return true
|
|
case "prometheus/api/v1/series/count":
|
|
seriesCountRequests.Inc()
|
|
httpserver.EnableCORS(w, r)
|
|
if err := prometheus.SeriesCountHandler(startTime, at, w, r); err != nil {
|
|
seriesCountErrors.Inc()
|
|
sendPrometheusError(w, r, err)
|
|
return true
|
|
}
|
|
return true
|
|
case "prometheus/api/v1/labels":
|
|
labelsRequests.Inc()
|
|
httpserver.EnableCORS(w, r)
|
|
if err := prometheus.LabelsHandler(startTime, at, w, r); err != nil {
|
|
labelsErrors.Inc()
|
|
sendPrometheusError(w, r, err)
|
|
return true
|
|
}
|
|
return true
|
|
case "prometheus/api/v1/labels/count":
|
|
labelsCountRequests.Inc()
|
|
httpserver.EnableCORS(w, r)
|
|
if err := prometheus.LabelsCountHandler(startTime, at, w, r); err != nil {
|
|
labelsCountErrors.Inc()
|
|
sendPrometheusError(w, r, err)
|
|
return true
|
|
}
|
|
return true
|
|
case "prometheus/api/v1/status/tsdb":
|
|
statusTSDBRequests.Inc()
|
|
if err := prometheus.TSDBStatusHandler(startTime, at, w, r); err != nil {
|
|
statusTSDBErrors.Inc()
|
|
sendPrometheusError(w, r, err)
|
|
return true
|
|
}
|
|
return true
|
|
case "prometheus/api/v1/status/active_queries":
|
|
statusActiveQueriesRequests.Inc()
|
|
promql.WriteActiveQueries(w)
|
|
return true
|
|
case "prometheus/api/v1/export":
|
|
exportRequests.Inc()
|
|
if err := prometheus.ExportHandler(startTime, at, w, r); err != nil {
|
|
exportErrors.Inc()
|
|
httpserver.Errorf(w, r, "error in %q: %s", r.URL.Path, err)
|
|
return true
|
|
}
|
|
return true
|
|
case "prometheus/federate":
|
|
federateRequests.Inc()
|
|
if err := prometheus.FederateHandler(startTime, at, w, r); err != nil {
|
|
federateErrors.Inc()
|
|
httpserver.Errorf(w, r, "error in %q: %s", r.URL.Path, err)
|
|
return true
|
|
}
|
|
return true
|
|
case "prometheus/api/v1/rules":
|
|
// Return dumb placeholder
|
|
rulesRequests.Inc()
|
|
w.Header().Set("Content-Type", "application/json")
|
|
fmt.Fprintf(w, "%s", `{"status":"success","data":{"groups":[]}}`)
|
|
return true
|
|
case "prometheus/api/v1/alerts":
|
|
// Return dumb placehloder
|
|
alertsRequests.Inc()
|
|
w.Header().Set("Content-Type", "application/json")
|
|
fmt.Fprintf(w, "%s", `{"status":"success","data":{"alerts":[]}}`)
|
|
return true
|
|
case "prometheus/api/v1/metadata":
|
|
// Return dumb placeholder
|
|
metadataRequests.Inc()
|
|
w.Header().Set("Content-Type", "application/json")
|
|
fmt.Fprintf(w, "%s", `{"status":"success","data":{}}`)
|
|
return true
|
|
default:
|
|
return false
|
|
}
|
|
}
|
|
|
|
func deleteHandler(startTime time.Time, w http.ResponseWriter, r *http.Request, p *httpserver.Path, at *auth.Token) bool {
|
|
switch p.Suffix {
|
|
case "prometheus/api/v1/admin/tsdb/delete_series":
|
|
deleteRequests.Inc()
|
|
if err := prometheus.DeleteHandler(startTime, at, r); err != nil {
|
|
deleteErrors.Inc()
|
|
httpserver.Errorf(w, r, "error in %q: %s", r.URL.Path, err)
|
|
return true
|
|
}
|
|
w.WriteHeader(http.StatusNoContent)
|
|
return true
|
|
default:
|
|
return false
|
|
}
|
|
}
|
|
|
|
func sendPrometheusError(w http.ResponseWriter, r *http.Request, err error) {
|
|
logger.Warnf("error in %q: %s", r.RequestURI, err)
|
|
|
|
w.Header().Set("Content-Type", "application/json")
|
|
statusCode := http.StatusUnprocessableEntity
|
|
var esc *httpserver.ErrorWithStatusCode
|
|
if errors.As(err, &esc) {
|
|
statusCode = esc.StatusCode
|
|
}
|
|
w.WriteHeader(statusCode)
|
|
prometheus.WriteErrorResponse(w, statusCode, err)
|
|
}
|
|
|
|
var (
|
|
labelValuesRequests = metrics.NewCounter(`vm_http_requests_total{path="/select/{}/prometheus/api/v1/label/{}/values"}`)
|
|
labelValuesErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/select/{}/prometheus/api/v1/label/{}/values"}`)
|
|
|
|
queryRequests = metrics.NewCounter(`vm_http_requests_total{path="/select/{}/prometheus/api/v1/query"}`)
|
|
queryErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/select/{}/prometheus/api/v1/query"}`)
|
|
|
|
queryRangeRequests = metrics.NewCounter(`vm_http_requests_total{path="/select/{}/prometheus/api/v1/query_range"}`)
|
|
queryRangeErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/select/{}/prometheus/api/v1/query_range"}`)
|
|
|
|
seriesRequests = metrics.NewCounter(`vm_http_requests_total{path="/select/{}/prometheus/api/v1/series"}`)
|
|
seriesErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/select/{}/prometheus/api/v1/series"}`)
|
|
|
|
seriesCountRequests = metrics.NewCounter(`vm_http_requests_total{path="/select/{}/prometheus/api/v1/series/count"}`)
|
|
seriesCountErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/select/{}/prometheus/api/v1/series/count"}`)
|
|
|
|
labelsRequests = metrics.NewCounter(`vm_http_requests_total{path="/select/{}/prometheus/api/v1/labels"}`)
|
|
labelsErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/select/{}/prometheus/api/v1/labels"}`)
|
|
|
|
labelsCountRequests = metrics.NewCounter(`vm_http_requests_total{path="/select/{}/prometheus/api/v1/labels/count"}`)
|
|
labelsCountErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/select/{}/prometheus/api/v1/labels/count"}`)
|
|
|
|
statusTSDBRequests = metrics.NewCounter(`vm_http_requests_total{path="/select/{}/prometheus/api/v1/status/tsdb"}`)
|
|
statusTSDBErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/select/{}/prometheus/api/v1/status/tsdb"}`)
|
|
|
|
statusActiveQueriesRequests = metrics.NewCounter(`vm_http_requests_total{path="/select/{}prometheus/api/v1/status/active_queries"}`)
|
|
|
|
deleteRequests = metrics.NewCounter(`vm_http_requests_total{path="/delete/{}/prometheus/api/v1/admin/tsdb/delete_series"}`)
|
|
deleteErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/delete/{}/prometheus/api/v1/admin/tsdb/delete_series"}`)
|
|
|
|
exportRequests = metrics.NewCounter(`vm_http_requests_total{path="/select/{}/prometheus/api/v1/export"}`)
|
|
exportErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/select/{}/prometheus/api/v1/export"}`)
|
|
|
|
federateRequests = metrics.NewCounter(`vm_http_requests_total{path="/select/{}/prometheus/federate"}`)
|
|
federateErrors = metrics.NewCounter(`vm_http_request_errors_total{path="/select/{}/prometheus/federate"}`)
|
|
|
|
rulesRequests = metrics.NewCounter(`vm_http_requests_total{path="/select/{}/prometheus/api/v1/rules"}`)
|
|
alertsRequests = metrics.NewCounter(`vm_http_requests_total{path="/select/{}/prometheus/api/v1/alerts"}`)
|
|
metadataRequests = metrics.NewCounter(`vm_http_requests_total{path="/select/{}/prometheus/api/v1/metadata"}`)
|
|
)
|