package main import ( "flag" "fmt" "io" "net/http" "os" "path" "time" "github.com/VictoriaMetrics/VictoriaMetrics/app/vminsert" "github.com/VictoriaMetrics/VictoriaMetrics/app/vmselect" "github.com/VictoriaMetrics/VictoriaMetrics/app/vmselect/promql" "github.com/VictoriaMetrics/VictoriaMetrics/app/vmstorage" "github.com/VictoriaMetrics/VictoriaMetrics/lib/buildinfo" "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/promscrape" "github.com/VictoriaMetrics/VictoriaMetrics/lib/storage" ) var ( httpListenAddr = flag.String("httpListenAddr", ":8428", "TCP address to listen for http connections") 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") dryRun = flag.Bool("dryRun", false, "Whether to check only -promscrape.config and then exit. "+ "Unknown config entries are allowed in -promscrape.config by default. This can be changed with -promscrape.config.strictParse") ) // custom api help links [["/api","doc"]] without http.pathPrefix. var customAPIPathList = [][]string{ {"/graph/explore", "explore metrics grafana page"}, {"/graph/d/prometheus-advanced/advanced-data-exploration", "PMM grafana dashboard"}, } func main() { // Write flags and help message to stdout, since it is easier to grep or pipe. flag.CommandLine.SetOutput(os.Stdout) flag.Usage = usage envflag.Parse() buildinfo.Init() logger.Init() if promscrape.IsDryRun() { *dryRun = true } if *dryRun { if err := promscrape.CheckConfig(); err != nil { logger.Fatalf("error when checking -promscrape.config: %s", err) } logger.Infof("-promscrape.config is ok; exitting with 0 status code") return } logger.Infof("starting VictoriaMetrics at %q...", *httpListenAddr) startTime := time.Now() storage.SetMinScrapeIntervalForDeduplication(*minScrapeInterval) vmstorage.Init(promql.ResetRollupResultCacheIfNeeded) vmselect.Init() vminsert.Init() startSelfScraper() go httpserver.Serve(*httpListenAddr, requestHandler) logger.Infof("started VictoriaMetrics in %.3f seconds", time.Since(startTime).Seconds()) sig := procutil.WaitForSigterm() logger.Infof("received signal %s", sig) stopSelfScraper() logger.Infof("gracefully shutting down webservice at %q", *httpListenAddr) startTime = time.Now() if err := httpserver.Stop(*httpListenAddr); err != nil { logger.Fatalf("cannot stop the webservice: %s", err) } vminsert.Stop() logger.Infof("successfully shut down the webservice in %.3f seconds", time.Since(startTime).Seconds()) vmstorage.Stop() vmselect.Stop() fs.MustStopDirRemover() logger.Infof("the VictoriaMetrics has been stopped in %.3f seconds", time.Since(startTime).Seconds()) } func requestHandler(w http.ResponseWriter, r *http.Request) bool { if r.URL.Path == "/" { fmt.Fprintf(w, "