mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-12-15 08:23:34 +01:00
c540235470
This allows hiding VictoriaMetrics components behind proxies, which serve pages at different path prefixes See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1858
459 lines
17 KiB
Go
459 lines
17 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"io"
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"net/http"
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"os"
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"strings"
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"sync/atomic"
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"time"
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"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/csvimport"
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"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/datadog"
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"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/graphite"
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"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/influx"
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"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/native"
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"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/opentsdb"
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"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/opentsdbhttp"
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"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/prometheusimport"
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"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/promremotewrite"
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"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/remotewrite"
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"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/vmimport"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/auth"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/buildinfo"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/envflag"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/flagutil"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/httpserver"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/influxutils"
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graphiteserver "github.com/VictoriaMetrics/VictoriaMetrics/lib/ingestserver/graphite"
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influxserver "github.com/VictoriaMetrics/VictoriaMetrics/lib/ingestserver/influx"
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opentsdbserver "github.com/VictoriaMetrics/VictoriaMetrics/lib/ingestserver/opentsdb"
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opentsdbhttpserver "github.com/VictoriaMetrics/VictoriaMetrics/lib/ingestserver/opentsdbhttp"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/procutil"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/promscrape"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/writeconcurrencylimiter"
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"github.com/VictoriaMetrics/metrics"
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)
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var (
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httpListenAddr = flag.String("httpListenAddr", ":8429", "TCP address to listen for http connections. "+
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"Set this flag to empty value in order to disable listening on any port. This mode may be useful for running multiple vmagent instances on the same server. "+
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"Note that /targets and /metrics pages aren't available if -httpListenAddr=''")
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influxListenAddr = flag.String("influxListenAddr", "", "TCP and UDP address to listen for InfluxDB line protocol data. Usually :8189 must be set. Doesn't work if empty. "+
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"This flag isn't needed when ingesting data over HTTP - just send it to http://<vmagent>:8429/write")
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graphiteListenAddr = flag.String("graphiteListenAddr", "", "TCP and UDP address to listen for Graphite plaintext data. Usually :2003 must be set. Doesn't work if empty")
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opentsdbListenAddr = flag.String("opentsdbListenAddr", "", "TCP and UDP address to listen for OpentTSDB metrics. "+
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"Telnet put messages and HTTP /api/put messages are simultaneously served on TCP port. "+
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"Usually :4242 must be set. Doesn't work if empty")
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opentsdbHTTPListenAddr = flag.String("opentsdbHTTPListenAddr", "", "TCP address to listen for OpentTSDB HTTP put requests. Usually :4242 must be set. Doesn't work if empty")
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configAuthKey = flag.String("configAuthKey", "", "Authorization key for accessing /config page. It must be passed via authKey query arg")
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dryRun = flag.Bool("dryRun", false, "Whether to check only config files without running vmagent. The following files are checked: "+
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"-promscrape.config, -remoteWrite.relabelConfig, -remoteWrite.urlRelabelConfig . "+
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"Unknown config entries are allowed in -promscrape.config by default. This can be changed with -promscrape.config.strictParse")
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)
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var (
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influxServer *influxserver.Server
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graphiteServer *graphiteserver.Server
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opentsdbServer *opentsdbserver.Server
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opentsdbhttpServer *opentsdbhttpserver.Server
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)
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func main() {
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// Write flags and help message to stdout, since it is easier to grep or pipe.
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flag.CommandLine.SetOutput(os.Stdout)
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flag.Usage = usage
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envflag.Parse()
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remotewrite.InitSecretFlags()
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buildinfo.Init()
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logger.Init()
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if promscrape.IsDryRun() {
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if err := promscrape.CheckConfig(); err != nil {
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logger.Fatalf("error when checking -promscrape.config: %s", err)
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}
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logger.Infof("-promscrape.config is ok; exitting with 0 status code")
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return
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}
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if *dryRun {
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if err := remotewrite.CheckRelabelConfigs(); err != nil {
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logger.Fatalf("error when checking relabel configs: %s", err)
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}
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if err := promscrape.CheckConfig(); err != nil {
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logger.Fatalf("error when checking -promscrape.config: %s", err)
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}
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logger.Infof("all the configs are ok; exitting with 0 status code")
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return
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}
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logger.Infof("starting vmagent at %q...", *httpListenAddr)
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startTime := time.Now()
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remotewrite.Init()
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common.StartUnmarshalWorkers()
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writeconcurrencylimiter.Init()
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if len(*influxListenAddr) > 0 {
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influxServer = influxserver.MustStart(*influxListenAddr, func(r io.Reader) error {
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return influx.InsertHandlerForReader(r, false)
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})
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}
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if len(*graphiteListenAddr) > 0 {
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graphiteServer = graphiteserver.MustStart(*graphiteListenAddr, graphite.InsertHandler)
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}
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if len(*opentsdbListenAddr) > 0 {
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opentsdbServer = opentsdbserver.MustStart(*opentsdbListenAddr, opentsdb.InsertHandler, opentsdbhttp.InsertHandler)
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}
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if len(*opentsdbHTTPListenAddr) > 0 {
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opentsdbhttpServer = opentsdbhttpserver.MustStart(*opentsdbHTTPListenAddr, opentsdbhttp.InsertHandler)
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}
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promscrape.Init(remotewrite.Push)
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if len(*httpListenAddr) > 0 {
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go httpserver.Serve(*httpListenAddr, requestHandler)
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}
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logger.Infof("started vmagent in %.3f seconds", time.Since(startTime).Seconds())
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sig := procutil.WaitForSigterm()
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logger.Infof("received signal %s", sig)
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startTime = time.Now()
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if len(*httpListenAddr) > 0 {
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logger.Infof("gracefully shutting down webservice at %q", *httpListenAddr)
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if err := httpserver.Stop(*httpListenAddr); err != nil {
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logger.Fatalf("cannot stop the webservice: %s", err)
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}
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logger.Infof("successfully shut down the webservice in %.3f seconds", time.Since(startTime).Seconds())
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}
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promscrape.Stop()
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if len(*influxListenAddr) > 0 {
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influxServer.MustStop()
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}
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if len(*graphiteListenAddr) > 0 {
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graphiteServer.MustStop()
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}
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if len(*opentsdbListenAddr) > 0 {
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opentsdbServer.MustStop()
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}
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if len(*opentsdbHTTPListenAddr) > 0 {
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opentsdbhttpServer.MustStop()
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}
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common.StopUnmarshalWorkers()
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remotewrite.Stop()
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logger.Infof("successfully stopped vmagent in %.3f seconds", time.Since(startTime).Seconds())
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}
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func requestHandler(w http.ResponseWriter, r *http.Request) bool {
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if r.URL.Path == "/" {
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if r.Method != "GET" {
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return false
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}
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fmt.Fprintf(w, "<h2>vmagent</h2>")
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fmt.Fprintf(w, "See docs at <a href='https://docs.victoriametrics.com/vmagent.html'>https://docs.victoriametrics.com/vmagent.html</a></br>")
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fmt.Fprintf(w, "Useful endpoints:</br>")
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httpserver.WriteAPIHelp(w, [][2]string{
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{"targets", "discovered targets list"},
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{"api/v1/targets", "advanced information about discovered targets in JSON format"},
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{"config", "-promscrape.config contents"},
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{"metrics", "available service metrics"},
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{"flags", "command-line flags"},
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{"-/reload", "reload configuration"},
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})
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return true
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}
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path := strings.Replace(r.URL.Path, "//", "/", -1)
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switch path {
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case "/api/v1/write":
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prometheusWriteRequests.Inc()
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if err := promremotewrite.InsertHandler(nil, r); err != nil {
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prometheusWriteErrors.Inc()
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httpserver.Errorf(w, r, "%s", err)
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return true
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}
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w.WriteHeader(http.StatusNoContent)
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return true
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case "/api/v1/import":
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vmimportRequests.Inc()
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if err := vmimport.InsertHandler(nil, r); err != nil {
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vmimportErrors.Inc()
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httpserver.Errorf(w, r, "%s", err)
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return true
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}
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w.WriteHeader(http.StatusNoContent)
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return true
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case "/api/v1/import/csv":
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csvimportRequests.Inc()
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if err := csvimport.InsertHandler(nil, r); err != nil {
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csvimportErrors.Inc()
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httpserver.Errorf(w, r, "%s", err)
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return true
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}
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w.WriteHeader(http.StatusNoContent)
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return true
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case "/api/v1/import/prometheus":
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prometheusimportRequests.Inc()
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if err := prometheusimport.InsertHandler(nil, r); err != nil {
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prometheusimportErrors.Inc()
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httpserver.Errorf(w, r, "%s", err)
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return true
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}
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w.WriteHeader(http.StatusNoContent)
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return true
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case "/api/v1/import/native":
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nativeimportRequests.Inc()
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if err := native.InsertHandler(nil, r); err != nil {
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nativeimportErrors.Inc()
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httpserver.Errorf(w, r, "%s", err)
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return true
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}
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w.WriteHeader(http.StatusNoContent)
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return true
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case "/write", "/api/v2/write":
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influxWriteRequests.Inc()
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if err := influx.InsertHandlerForHTTP(nil, r); err != nil {
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influxWriteErrors.Inc()
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httpserver.Errorf(w, r, "%s", err)
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return true
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}
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w.WriteHeader(http.StatusNoContent)
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return true
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case "/query":
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influxQueryRequests.Inc()
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influxutils.WriteDatabaseNames(w)
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return true
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case "/datadog/api/v1/series":
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datadogWriteRequests.Inc()
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if err := datadog.InsertHandlerForHTTP(nil, r); err != nil {
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datadogWriteErrors.Inc()
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httpserver.Errorf(w, r, "%s", err)
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return true
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}
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// See https://docs.datadoghq.com/api/latest/metrics/#submit-metrics
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(202)
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fmt.Fprintf(w, `{"status":"ok"}`)
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return true
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case "/datadog/api/v1/validate":
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datadogValidateRequests.Inc()
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// See https://docs.datadoghq.com/api/latest/authentication/#validate-api-key
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w.Header().Set("Content-Type", "application/json")
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fmt.Fprintf(w, `{"valid":true}`)
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return true
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case "/datadog/api/v1/check_run":
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datadogCheckRunRequests.Inc()
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// See https://docs.datadoghq.com/api/latest/service-checks/#submit-a-service-check
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(202)
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fmt.Fprintf(w, `{"status":"ok"}`)
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return true
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case "/datadog/intake/":
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datadogIntakeRequests.Inc()
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w.Header().Set("Content-Type", "application/json")
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fmt.Fprintf(w, `{}`)
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return true
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case "/targets":
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promscrapeTargetsRequests.Inc()
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promscrape.WriteHumanReadableTargetsStatus(w, r)
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return true
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case "/config":
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if *configAuthKey != "" && r.FormValue("authKey") != *configAuthKey {
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err := &httpserver.ErrorWithStatusCode{
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Err: fmt.Errorf("The provided authKey doesn't match -configAuthKey"),
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StatusCode: http.StatusUnauthorized,
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}
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httpserver.Errorf(w, r, "%s", err)
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return true
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}
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promscrapeConfigRequests.Inc()
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w.Header().Set("Content-Type", "text/plain; charset=utf-8")
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promscrape.WriteConfigData(w)
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return true
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case "/api/v1/targets":
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promscrapeAPIV1TargetsRequests.Inc()
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w.Header().Set("Content-Type", "application/json")
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state := r.FormValue("state")
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promscrape.WriteAPIV1Targets(w, state)
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return true
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case "/-/reload":
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promscrapeConfigReloadRequests.Inc()
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procutil.SelfSIGHUP()
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w.WriteHeader(http.StatusOK)
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return true
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case "/ready":
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if rdy := atomic.LoadInt32(&promscrape.PendingScrapeConfigs); rdy > 0 {
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errMsg := fmt.Sprintf("waiting for scrapes to init, left: %d", rdy)
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http.Error(w, errMsg, http.StatusTooEarly)
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} else {
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w.Header().Set("Content-Type", "text/plain; charset=utf-8")
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w.WriteHeader(http.StatusOK)
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w.Write([]byte("OK"))
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}
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return true
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}
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if remotewrite.MultitenancyEnabled() {
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return processMultitenantRequest(w, r, path)
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}
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return false
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}
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func processMultitenantRequest(w http.ResponseWriter, r *http.Request, path string) bool {
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p, err := httpserver.ParsePath(path)
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if err != nil {
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// Cannot parse multitenant path. Skip it - probably it will be parsed later.
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return false
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}
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if p.Prefix != "insert" {
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httpserver.Errorf(w, r, `unsupported multitenant prefix: %q; expected "insert"`, p.Prefix)
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return true
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}
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at, err := auth.NewToken(p.AuthToken)
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if err != nil {
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httpserver.Errorf(w, r, "cannot obtain auth token: %s", err)
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return true
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}
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switch p.Suffix {
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case "prometheus/", "prometheus", "prometheus/api/v1/write":
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prometheusWriteRequests.Inc()
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if err := promremotewrite.InsertHandler(at, r); err != nil {
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prometheusWriteErrors.Inc()
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httpserver.Errorf(w, r, "%s", err)
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return true
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}
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w.WriteHeader(http.StatusNoContent)
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return true
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case "prometheus/api/v1/import":
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vmimportRequests.Inc()
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if err := vmimport.InsertHandler(at, r); err != nil {
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vmimportErrors.Inc()
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httpserver.Errorf(w, r, "%s", err)
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return true
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}
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w.WriteHeader(http.StatusNoContent)
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return true
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case "prometheus/api/v1/import/csv":
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csvimportRequests.Inc()
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if err := csvimport.InsertHandler(at, r); err != nil {
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csvimportErrors.Inc()
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httpserver.Errorf(w, r, "%s", err)
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return true
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}
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w.WriteHeader(http.StatusNoContent)
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return true
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case "prometheus/api/v1/import/prometheus":
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prometheusimportRequests.Inc()
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if err := prometheusimport.InsertHandler(at, r); err != nil {
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prometheusimportErrors.Inc()
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httpserver.Errorf(w, r, "%s", err)
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return true
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}
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w.WriteHeader(http.StatusNoContent)
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return true
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case "prometheus/api/v1/import/native":
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nativeimportRequests.Inc()
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if err := native.InsertHandler(at, r); err != nil {
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nativeimportErrors.Inc()
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httpserver.Errorf(w, r, "%s", err)
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return true
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}
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w.WriteHeader(http.StatusNoContent)
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return true
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case "influx/write", "influx/api/v2/write":
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influxWriteRequests.Inc()
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if err := influx.InsertHandlerForHTTP(at, r); err != nil {
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influxWriteErrors.Inc()
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httpserver.Errorf(w, r, "%s", err)
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return true
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}
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w.WriteHeader(http.StatusNoContent)
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return true
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case "influx/query":
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influxQueryRequests.Inc()
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influxutils.WriteDatabaseNames(w)
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return true
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case "datadog/api/v1/series":
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datadogWriteRequests.Inc()
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if err := datadog.InsertHandlerForHTTP(at, r); err != nil {
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datadogWriteErrors.Inc()
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httpserver.Errorf(w, r, "%s", err)
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return true
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}
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// See https://docs.datadoghq.com/api/latest/metrics/#submit-metrics
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w.WriteHeader(202)
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fmt.Fprintf(w, `{"status":"ok"}`)
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return true
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case "datadog/api/v1/validate":
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datadogValidateRequests.Inc()
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// See https://docs.datadoghq.com/api/latest/authentication/#validate-api-key
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w.Header().Set("Content-Type", "application/json")
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fmt.Fprintf(w, `{"valid":true}`)
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return true
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case "datadog/api/v1/check_run":
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datadogCheckRunRequests.Inc()
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// See https://docs.datadoghq.com/api/latest/service-checks/#submit-a-service-check
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(202)
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fmt.Fprintf(w, `{"status":"ok"}`)
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return true
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case "datadog/intake/":
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datadogIntakeRequests.Inc()
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w.Header().Set("Content-Type", "application/json")
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fmt.Fprintf(w, `{}`)
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return true
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default:
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httpserver.Errorf(w, r, "unsupported multitenant path suffix: %q", p.Suffix)
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return true
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}
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}
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var (
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prometheusWriteRequests = metrics.NewCounter(`vmagent_http_requests_total{path="/api/v1/write", protocol="promremotewrite"}`)
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prometheusWriteErrors = metrics.NewCounter(`vmagent_http_request_errors_total{path="/api/v1/write", protocol="promremotewrite"}`)
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vmimportRequests = metrics.NewCounter(`vmagent_http_requests_total{path="/api/v1/import", protocol="vmimport"}`)
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vmimportErrors = metrics.NewCounter(`vmagent_http_request_errors_total{path="/api/v1/import", protocol="vmimport"}`)
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csvimportRequests = metrics.NewCounter(`vmagent_http_requests_total{path="/api/v1/import/csv", protocol="csvimport"}`)
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csvimportErrors = metrics.NewCounter(`vmagent_http_request_errors_total{path="/api/v1/import/csv", protocol="csvimport"}`)
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prometheusimportRequests = metrics.NewCounter(`vmagent_http_requests_total{path="/api/v1/import/prometheus", protocol="prometheusimport"}`)
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prometheusimportErrors = metrics.NewCounter(`vmagent_http_request_errors_total{path="/api/v1/import/prometheus", protocol="prometheusimport"}`)
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nativeimportRequests = metrics.NewCounter(`vmagent_http_requests_total{path="/api/v1/import/native", protocol="nativeimport"}`)
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nativeimportErrors = metrics.NewCounter(`vmagent_http_request_errors_total{path="/api/v1/import/native", protocol="nativeimport"}`)
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influxWriteRequests = metrics.NewCounter(`vmagent_http_requests_total{path="/influx/write", protocol="influx"}`)
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influxWriteErrors = metrics.NewCounter(`vmagent_http_request_errors_total{path="/influx/write", protocol="influx"}`)
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influxQueryRequests = metrics.NewCounter(`vmagent_http_requests_total{path="/influx/query", protocol="influx"}`)
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|
|
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datadogWriteRequests = metrics.NewCounter(`vmagent_http_requests_total{path="/datadog/api/v1/series", protocol="datadog"}`)
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|
datadogWriteErrors = metrics.NewCounter(`vmagent_http_request_errors_total{path="/datadog/api/v1/series", protocol="datadog"}`)
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|
|
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datadogValidateRequests = metrics.NewCounter(`vmagent_http_requests_total{path="/datadog/api/v1/validate", protocol="datadog"}`)
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|
datadogCheckRunRequests = metrics.NewCounter(`vmagent_http_requests_total{path="/datadog/api/v1/check_run", protocol="datadog"}`)
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|
datadogIntakeRequests = metrics.NewCounter(`vmagent_http_requests_total{path="/datadog/intake/", protocol="datadog"}`)
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|
|
|
promscrapeTargetsRequests = metrics.NewCounter(`vmagent_http_requests_total{path="/targets"}`)
|
|
promscrapeAPIV1TargetsRequests = metrics.NewCounter(`vmagent_http_requests_total{path="/api/v1/targets"}`)
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|
|
|
promscrapeConfigRequests = metrics.NewCounter(`vmagent_http_requests_total{path="/config"}`)
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|
|
|
promscrapeConfigReloadRequests = metrics.NewCounter(`vmagent_http_requests_total{path="/-/reload"}`)
|
|
)
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|
|
|
func usage() {
|
|
const s = `
|
|
vmagent collects metrics data via popular data ingestion protocols and routes it to VictoriaMetrics.
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|
|
|
See the docs at https://docs.victoriametrics.com/vmagent.html .
|
|
`
|
|
flagutil.Usage(s)
|
|
}
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