func main() {
flag.Parse()
if *showVersion {
fmt.Fprintln(os.Stdout, version.Print("mysqld_exporter"))
os.Exit(0)
}
log.Infoln("Starting mysqld_exporter", version.Info())
log.Infoln("Build context", version.BuildContext())
dsn := os.Getenv("DATA_SOURCE_NAME")
if len(dsn) == 0 {
var err error
if dsn, err = parseMycnf(*configMycnf); err != nil {
log.Fatal(err)
}
}
exporter := NewExporter(dsn)
prometheus.MustRegister(exporter)
http.Handle(*metricPath, prometheus.Handler())
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
w.Write(landingPage)
})
log.Infoln("Listening on", *listenAddress)
log.Fatal(http.ListenAndServe(*listenAddress, nil))
}
func main() {
flag.Parse()
if *showVersion {
fmt.Fprintln(os.Stdout, version.Print("collectd_exporter"))
os.Exit(0)
}
log.Infoln("Starting collectd_exporter", version.Info())
log.Infoln("Build context", version.BuildContext())
c := newCollectdCollector()
prometheus.MustRegister(c)
startCollectdServer(context.Background(), c)
if *collectdPostPath != "" {
http.HandleFunc(*collectdPostPath, c.collectdPost)
}
http.Handle(*metricsPath, prometheus.Handler())
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
w.Write([]byte(`<html>
<head><title>Collectd Exporter</title></head>
<body>
<h1>Collectd Exporter</h1>
<p><a href='` + *metricsPath + `'>Metrics</a></p>
</body>
</html>`))
})
log.Infoln("Listening on", *listenAddress)
log.Fatal(http.ListenAndServe(*listenAddress, nil))
}
func main() {
var (
bindURI = flag.String("bind.stats-url", "http://localhost:8053/", "HTTP XML API address of an Bind server.")
bindTimeout = flag.Duration("bind.timeout", 10*time.Second, "Timeout for trying to get stats from Bind.")
bindPidFile = flag.String("bind.pid-file", "", "Path to Bind's pid file to export process information.")
bindVersion = flag.String("bind.stats-version", "auto", "BIND statistics version. Can be detected automatically. Available: [xml.v2, xml.v3, auto]")
showVersion = flag.Bool("version", false, "Print version information.")
listenAddress = flag.String("web.listen-address", ":9119", "Address to listen on for web interface and telemetry.")
metricsPath = flag.String("web.telemetry-path", "/metrics", "Path under which to expose metrics.")
groups = statisticGroups{bind.ServerStats, bind.ViewStats}
)
flag.Var(&groups, "bind.stats-groups", "Comma-separated list of statistics to collect. Available: [server, view, tasks]")
flag.Parse()
if *showVersion {
fmt.Fprintln(os.Stdout, version.Print("bind_exporter"))
os.Exit(0)
}
log.Infoln("Starting bind_exporter", version.Info())
log.Infoln("Build context", version.BuildContext())
log.Infoln("Configured to collect statistics", groups.String())
prometheus.MustRegister(NewExporter(*bindVersion, *bindURI, *bindTimeout, groups))
if *bindPidFile != "" {
procExporter := prometheus.NewProcessCollectorPIDFn(
func() (int, error) {
content, err := ioutil.ReadFile(*bindPidFile)
if err != nil {
return 0, fmt.Errorf("Can't read pid file: %s", err)
}
value, err := strconv.Atoi(strings.TrimSpace(string(content)))
if err != nil {
return 0, fmt.Errorf("Can't parse pid file: %s", err)
}
return value, nil
}, namespace)
prometheus.MustRegister(procExporter)
}
log.Info("Starting Server: ", *listenAddress)
http.Handle(*metricsPath, prometheus.Handler())
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
w.Write([]byte(`<html>
<head><title>Bind Exporter</title></head>
<body>
<h1>Bind Exporter</h1>
<p><a href='` + *metricsPath + `'>Metrics</a></p>
</body>
</html>`))
})
log.Fatal(http.ListenAndServe(*listenAddress, nil))
}
// Implements the real polling functionality, but returns the connection object
// so other classes can inherit it.
func (s *BasicService) doPoll() net.Conn {
log.Debugln("Dialing basic service", s.Host().Hostname, s.Port(), s.Name())
conn, err := s.dialAndScrape()
if err != nil {
log.Infoln("Error", s.Host().Hostname, s.Port(), s.Name(), err)
s.portOpen = FAILED
} else {
log.Infoln("Success", s.Host().Hostname, s.Port(), s.Name())
s.portOpen = SUCCESS
}
return conn
}
func main() {
flag.Parse()
if *showVersion {
fmt.Fprintln(os.Stdout, version.Print("statsd_exporter"))
os.Exit(0)
}
if *addSuffix {
log.Warnln("Warning: Using -statsd.add-suffix is discouraged. We recommend explicitly naming metrics appropriately in the mapping configuration.")
}
log.Infoln("Starting StatsD -> Prometheus Exporter", version.Info())
log.Infoln("Build context", version.BuildContext())
log.Infoln("Accepting StatsD Traffic on", *statsdListenAddress)
log.Infoln("Accepting Prometheus Requests on", *listenAddress)
go serveHTTP()
events := make(chan Events, 1024)
defer close(events)
listenAddr := udpAddrFromString(*statsdListenAddress)
conn, err := net.ListenUDP("udp", listenAddr)
if err != nil {
log.Fatal(err)
}
if *readBuffer != 0 {
err = conn.SetReadBuffer(*readBuffer)
if err != nil {
log.Fatal("Error setting UDP read buffer:", err)
}
}
l := &StatsDListener{conn: conn}
go l.Listen(events)
mapper := &metricMapper{}
if *mappingConfig != "" {
err := mapper.initFromFile(*mappingConfig)
if err != nil {
log.Fatal("Error loading config:", err)
}
go watchConfig(*mappingConfig, mapper)
}
exporter := NewExporter(mapper, *addSuffix)
exporter.Listen(events)
}
// Convert database.sql types to float64s for Prometheus consumption. Null types are mapped to NaN. string and []byte
// types are mapped as NaN and !ok
func dbToFloat64(t interface{}) (float64, bool) {
switch v := t.(type) {
case int64:
return float64(v), true
case float64:
return v, true
case time.Time:
return float64(v.Unix()), true
case []byte:
// Try and convert to string and then parse to a float64
strV := string(v)
result, err := strconv.ParseFloat(strV, 64)
if err != nil {
return math.NaN(), false
}
return result, true
case string:
result, err := strconv.ParseFloat(v, 64)
if err != nil {
log.Infoln("Could not parse string:", err)
return math.NaN(), false
}
return result, true
case nil:
return math.NaN(), true
default:
return math.NaN(), false
}
}
func watchConfig(fileName string, mapper *metricMapper) {
watcher, err := fsnotify.NewWatcher()
if err != nil {
log.Fatal(err)
}
err = watcher.WatchFlags(fileName, fsnotify.FSN_MODIFY)
if err != nil {
log.Fatal(err)
}
for {
select {
case ev := <-watcher.Event:
log.Infof("Config file changed (%s), attempting reload", ev)
err = mapper.initFromFile(fileName)
if err != nil {
log.Errorln("Error reloading config:", err)
configLoads.WithLabelValues("failure").Inc()
} else {
log.Infoln("Config reloaded successfully")
configLoads.WithLabelValues("success").Inc()
}
// Re-add the file watcher since it can get lost on some changes. E.g.
// saving a file with vim results in a RENAME-MODIFY-DELETE event
// sequence, after which the newly written file is no longer watched.
err = watcher.WatchFlags(fileName, fsnotify.FSN_MODIFY)
case err := <-watcher.Error:
log.Errorln("Error watching config:", err)
}
}
}
// Poll but for the SSL service.
func (s *SSLService) Poll() {
conn := s.doPoll()
if conn != nil {
log.Infoln("Success", s.Host().Hostname, s.Port(), s.Name())
conn.Close()
}
}
func main() {
flag.Parse()
if *showVersion {
fmt.Fprintln(os.Stdout, version.Print("blackbox_exporter"))
os.Exit(0)
}
log.Infoln("Starting blackbox_exporter", version.Info())
log.Infoln("Build context", version.BuildContext())
yamlFile, err := ioutil.ReadFile(*configFile)
if err != nil {
log.Fatalf("Error reading config file: %s", err)
}
config := Config{}
err = yaml.Unmarshal(yamlFile, &config)
if err != nil {
log.Fatalf("Error parsing config file: %s", err)
}
http.Handle("/metrics", prometheus.Handler())
http.HandleFunc("/probe",
func(w http.ResponseWriter, r *http.Request) {
probeHandler(w, r, &config)
})
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
w.Write([]byte(`<html>
<head><title>Blackbox Exporter</title></head>
<body>
<h1>Blackbox Exporter</h1>
<p><a href="/probe?target=prometheus.io&module=http_2xx">Probe prometheus.io for http_2xx</a></p>
<p><a href="/metrics">Metrics</a></p>
</body>
</html>`))
})
log.Infoln("Listening on", *listenAddress)
if err := http.ListenAndServe(*listenAddress, nil); err != nil {
log.Fatalf("Error starting HTTP server: %s", err)
}
}
func main() {
r := httprouter.New()
// r.GET("/overview", Overview)
r.GET("/graph/*importpath", Grapher)
r.ServeFiles("/static/*filepath", http.Dir("static/"))
log.Infoln("launching tracegraph on :8080")
log.Fatal(http.ListenAndServe(":8080", r))
}
func main() {
flag.Parse()
log.Infoln("Starting snmp exporter", version.Info())
log.Infoln("Build context", version.BuildContext())
// Bail early if the config is bad.
c, err := LoadFile(*configFile)
if err != nil {
log.Fatalf("Error parsing config file: %s", err)
}
// Initilise metrics.
for module, _ := range *c {
snmpDuration.WithLabelValues(module)
}
http.Handle("/metrics", promhttp.Handler()) // Normal metrics endpoint for SNMP exporter itself.
http.HandleFunc("/snmp", handler) // Endpoint to do SNMP scrapes.
log.Infof("Listening on %s", *listenAddress)
log.Fatal(http.ListenAndServe(*listenAddress, nil))
}
// Iterate through all the namespace mappings in the exporter and run their
// queries.
func queryNamespaceMappings(ch chan<- prometheus.Metric, db *sql.DB, metricMap map[string]MetricMapNamespace, queryOverrides map[string]string) map[string]error {
// Return a map of namespace -> errors
namespaceErrors := make(map[string]error)
for namespace, mapping := range metricMap {
log.Debugln("Querying namespace: ", namespace)
nonFatalErrors, err := queryNamespaceMapping(ch, db, namespace, mapping, queryOverrides)
// Serious error - a namespace disappeard
if err != nil {
namespaceErrors[namespace] = err
log.Infoln(err)
}
// Non-serious errors - likely version or parsing problems.
if len(nonFatalErrors) > 0 {
for _, err := range nonFatalErrors {
log.Infoln(err.Error())
}
}
}
return namespaceErrors
}
// Stop all background processing.
func (tm *TargetManager) Stop() {
log.Infoln("Stopping target manager...")
tm.mtx.Lock()
// Cancel the base context, this will cause all target providers to shut down
// and all in-flight scrapes to abort immmediately.
// Started inserts will be finished before terminating.
tm.cancel()
tm.mtx.Unlock()
// Wait for all scrape inserts to complete.
tm.wg.Wait()
log.Debugln("Target manager stopped")
}
// Check and update the exporters query maps if the version has changed.
func (e *Exporter) checkMapVersions(ch chan<- prometheus.Metric, db *sql.DB) error {
log.Debugln("Querying Postgres Version")
versionRow := db.QueryRow("SELECT version();")
var versionString string
err := versionRow.Scan(&versionString)
if err != nil {
return errors.New(fmt.Sprintln("Error scanning version string:", err))
}
semanticVersion, err := parseVersion(versionString)
// Check if semantic version changed and recalculate maps if needed.
if semanticVersion.NE(e.lastMapVersion) || e.variableMap == nil || e.metricMap == nil {
log.Infoln("Semantic Version Changed:", e.lastMapVersion.String(), "->", semanticVersion.String())
e.mappingMtx.Lock()
e.variableMap = makeDescMap(semanticVersion, variableMaps)
e.metricMap = makeDescMap(semanticVersion, metricMaps)
e.queryOverrides = makeQueryOverrideMap(semanticVersion, queryOverrides)
e.lastMapVersion = semanticVersion
if e.userQueriesPath != "" {
if err := addQueries(e.userQueriesPath, semanticVersion, e.metricMap, e.queryOverrides); err != nil {
log.Errorln("Failed to reload user queries:", e.userQueriesPath, err)
}
}
e.mappingMtx.Unlock()
}
// Output the version as a special metric
versionDesc := prometheus.NewDesc(fmt.Sprintf("%s_%s", namespace, staticLabelName),
"Version string as reported by postgres", []string{"version", "short_version"}, nil)
ch <- prometheus.MustNewConstMetric(versionDesc,
prometheus.UntypedValue, 1, versionString, semanticVersion.String())
return nil
}
func (e *Exporter) scrape(ch chan<- prometheus.Metric) {
defer func(begun time.Time) {
e.duration.Set(time.Since(begun).Seconds())
}(time.Now())
e.error.Set(0)
e.totalScrapes.Inc()
db, err := sql.Open("postgres", e.dsn)
if err != nil {
log.Infoln("Error opening connection to database:", err)
e.error.Set(1)
return
}
defer db.Close()
// Check if map versions need to be updated
if err := e.checkMapVersions(ch, db); err != nil {
log.Warnln("Postgres version could not be determined. Proceeding with outdated query maps.")
e.error.Set(1)
}
// Lock the exporter maps
e.mappingMtx.RLock()
defer e.mappingMtx.RUnlock()
// Handle querying the show variables
nonFatalErrors := queryShowVariables(ch, db, e.variableMap)
if len(nonFatalErrors) > 0 {
e.error.Set(1)
}
errMap := queryNamespaceMappings(ch, db, e.metricMap, e.queryOverrides)
if len(errMap) > 0 {
e.error.Set(1)
}
}
func main() {
flag.Parse()
if *showVersion {
fmt.Fprintln(os.Stdout, version.Print("graphite_exporter"))
os.Exit(0)
}
log.Infoln("Starting graphite_exporter", version.Info())
log.Infoln("Build context", version.BuildContext())
http.Handle(*metricsPath, prometheus.Handler())
c := newGraphiteCollector()
prometheus.MustRegister(c)
c.mapper = &metricMapper{}
if *mappingConfig != "" {
err := c.mapper.initFromFile(*mappingConfig)
if err != nil {
log.Fatalf("Error loading metric mapping config: %s", err)
}
}
tcpSock, err := net.Listen("tcp", *graphiteAddress)
if err != nil {
log.Fatalf("Error binding to TCP socket: %s", err)
}
go func() {
for {
conn, err := tcpSock.Accept()
if err != nil {
log.Errorf("Error accepting TCP connection: %s", err)
continue
}
go func() {
defer conn.Close()
c.processReader(conn)
}()
}
}()
udpAddress, err := net.ResolveUDPAddr("udp", *graphiteAddress)
if err != nil {
log.Fatalf("Error resolving UDP address: %s", err)
}
udpSock, err := net.ListenUDP("udp", udpAddress)
if err != nil {
log.Fatalf("Error listening to UDP address: %s", err)
}
go func() {
defer udpSock.Close()
for {
buf := make([]byte, 65536)
chars, srcAddress, err := udpSock.ReadFromUDP(buf)
if err != nil {
log.Errorf("Error reading UDP packet from %s: %s", srcAddress, err)
continue
}
go c.processReader(bytes.NewReader(buf[0:chars]))
}
}()
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
w.Write([]byte(`<html>
<head><title>Graphite Exporter</title></head>
<body>
<h1>Graphite Exporter</h1>
<p>Accepting plaintext Graphite samples over TCP and UDP on ` + *graphiteAddress + `</p>
<p><a href="` + *metricsPath + `">Metrics</a></p>
</body>
</html>`))
})
log.Infoln("Listening on", *listenAddress)
log.Fatal(http.ListenAndServe(*listenAddress, nil))
}
func main() {
flag.Parse()
if *showVersion {
fmt.Fprintln(os.Stdout, version.Print("alertmanager"))
os.Exit(0)
}
log.Infoln("Starting alertmanager", version.Info())
log.Infoln("Build context", version.BuildContext())
err := os.MkdirAll(*dataDir, 0777)
if err != nil {
log.Fatal(err)
}
marker := types.NewMarker()
alerts, err := boltmem.NewAlerts(*dataDir)
if err != nil {
log.Fatal(err)
}
defer alerts.Close()
notifies, err := boltmem.NewNotificationInfo(*dataDir)
if err != nil {
log.Fatal(err)
}
defer notifies.Close()
silences, err := boltmem.NewSilences(*dataDir, marker)
if err != nil {
log.Fatal(err)
}
defer silences.Close()
var (
inhibitor *Inhibitor
tmpl *template.Template
disp *Dispatcher
)
defer disp.Stop()
api := NewAPI(alerts, silences, func() AlertOverview {
return disp.Groups()
})
build := func(rcvs []*config.Receiver) notify.Notifier {
var (
router = notify.Router{}
fanouts = notify.Build(rcvs, tmpl)
)
for name, fo := range fanouts {
for i, n := range fo {
n = notify.Retry(n)
n = notify.Log(n, log.With("step", "retry"))
n = notify.Dedup(notifies, n)
n = notify.Log(n, log.With("step", "dedup"))
fo[i] = n
}
router[name] = fo
}
n := notify.Notifier(router)
n = notify.Log(n, log.With("step", "route"))
n = notify.Silence(silences, n, marker)
n = notify.Log(n, log.With("step", "silence"))
n = notify.Inhibit(inhibitor, n, marker)
n = notify.Log(n, log.With("step", "inhibit"))
return n
}
amURL, err := extURL(*externalURL)
if err != nil {
log.Fatal(err)
}
reload := func() (err error) {
log.With("file", *configFile).Infof("Loading configuration file")
defer func() {
if err != nil {
log.With("file", *configFile).Errorf("Loading configuration file failed: %s", err)
configSuccess.Set(0)
} else {
configSuccess.Set(1)
configSuccessTime.Set(float64(time.Now().Unix()))
}
}()
conf, err := config.LoadFile(*configFile)
if err != nil {
return err
}
api.Update(conf.String(), time.Duration(conf.Global.ResolveTimeout))
tmpl, err = template.FromGlobs(conf.Templates...)
if err != nil {
return err
}
tmpl.ExternalURL = amURL
inhibitor.Stop()
disp.Stop()
inhibitor = NewInhibitor(alerts, conf.InhibitRules, marker)
disp = NewDispatcher(alerts, NewRoute(conf.Route, nil), build(conf.Receivers), marker)
go disp.Run()
go inhibitor.Run()
return nil
}
if err := reload(); err != nil {
os.Exit(1)
}
router := route.New()
webReload := make(chan struct{})
RegisterWeb(router.WithPrefix(amURL.Path), webReload)
api.Register(router.WithPrefix(path.Join(amURL.Path, "/api")))
log.Infoln("Listening on", *listenAddress)
go listen(router)
var (
hup = make(chan os.Signal)
hupReady = make(chan bool)
term = make(chan os.Signal)
)
signal.Notify(hup, syscall.SIGHUP)
signal.Notify(term, os.Interrupt, syscall.SIGTERM)
go func() {
<-hupReady
for {
select {
case <-hup:
case <-webReload:
}
reload()
}
}()
// Wait for reload or termination signals.
close(hupReady) // Unblock SIGHUP handler.
<-term
log.Infoln("Received SIGTERM, exiting gracefully...")
}
func main() {
flag.Parse()
if *showVersion {
fmt.Fprintln(os.Stdout, version.Print("pushgateway"))
os.Exit(0)
}
log.Infoln("Starting pushgateway", version.Info())
log.Infoln("Build context", version.BuildContext())
flags := map[string]string{}
flag.VisitAll(func(f *flag.Flag) {
flags[f.Name] = f.Value.String()
})
ms := storage.NewDiskMetricStore(*persistenceFile, *persistenceInterval)
prometheus.SetMetricFamilyInjectionHook(ms.GetMetricFamilies)
// Enable collect checks for debugging.
// prometheus.EnableCollectChecks(true)
r := httprouter.New()
r.Handler("GET", *metricsPath, prometheus.Handler())
// Handlers for pushing and deleting metrics.
r.PUT("/metrics/job/:job/*labels", handler.Push(ms, true))
r.POST("/metrics/job/:job/*labels", handler.Push(ms, false))
r.DELETE("/metrics/job/:job/*labels", handler.Delete(ms))
r.PUT("/metrics/job/:job", handler.Push(ms, true))
r.POST("/metrics/job/:job", handler.Push(ms, false))
r.DELETE("/metrics/job/:job", handler.Delete(ms))
// Handlers for the deprecated API.
r.PUT("/metrics/jobs/:job/instances/:instance", handler.LegacyPush(ms, true))
r.POST("/metrics/jobs/:job/instances/:instance", handler.LegacyPush(ms, false))
r.DELETE("/metrics/jobs/:job/instances/:instance", handler.LegacyDelete(ms))
r.PUT("/metrics/jobs/:job", handler.LegacyPush(ms, true))
r.POST("/metrics/jobs/:job", handler.LegacyPush(ms, false))
r.DELETE("/metrics/jobs/:job", handler.LegacyDelete(ms))
r.Handler("GET", "/static/*filepath", prometheus.InstrumentHandler(
"static",
http.FileServer(
&assetfs.AssetFS{Asset: Asset, AssetDir: AssetDir, AssetInfo: AssetInfo},
),
))
statusHandler := prometheus.InstrumentHandlerFunc("status", handler.Status(ms, Asset, flags))
r.Handler("GET", "/status", statusHandler)
r.Handler("GET", "/", statusHandler)
// Re-enable pprof.
r.GET("/debug/pprof/*pprof", handlePprof)
log.Infof("Listening on %s.", *listenAddress)
l, err := net.Listen("tcp", *listenAddress)
if err != nil {
log.Fatal(err)
}
go interruptHandler(l)
err = (&http.Server{Addr: *listenAddress, Handler: r}).Serve(l)
log.Errorln("HTTP server stopped:", err)
// To give running connections a chance to submit their payload, we wait
// for 1sec, but we don't want to wait long (e.g. until all connections
// are done) to not delay the shutdown.
time.Sleep(time.Second)
if err := ms.Shutdown(); err != nil {
log.Errorln("Problem shutting down metric storage:", err)
}
}
func main() {
peers := &stringset{}
var (
showVersion = flag.Bool("version", false, "Print version information.")
configFile = flag.String("config.file", "alertmanager.yml", "Alertmanager configuration file name.")
dataDir = flag.String("storage.path", "data/", "Base path for data storage.")
retention = flag.Duration("data.retention", 5*24*time.Hour, "How long to keep data for.")
externalURL = flag.String("web.external-url", "", "The URL under which Alertmanager is externally reachable (for example, if Alertmanager is served via a reverse proxy). Used for generating relative and absolute links back to Alertmanager itself. If the URL has a path portion, it will be used to prefix all HTTP endpoints served by Alertmanager. If omitted, relevant URL components will be derived automatically.")
listenAddress = flag.String("web.listen-address", ":9093", "Address to listen on for the web interface and API.")
meshListen = flag.String("mesh.listen-address", net.JoinHostPort("0.0.0.0", strconv.Itoa(mesh.Port)), "mesh listen address")
hwaddr = flag.String("mesh.hardware-address", mustHardwareAddr(), "MAC address, i.e. mesh peer ID")
nickname = flag.String("mesh.nickname", mustHostname(), "peer nickname")
)
flag.Var(peers, "mesh.peer", "initial peers (may be repeated)")
flag.Parse()
if len(flag.Args()) > 0 {
log.Fatalln("Received unexpected and unparsed arguments: ", strings.Join(flag.Args(), ", "))
}
if *showVersion {
fmt.Fprintln(os.Stdout, version.Print("alertmanager"))
os.Exit(0)
}
log.Infoln("Starting alertmanager", version.Info())
log.Infoln("Build context", version.BuildContext())
err := os.MkdirAll(*dataDir, 0777)
if err != nil {
log.Fatal(err)
}
logger := log.NewLogger(os.Stderr)
mrouter := initMesh(*meshListen, *hwaddr, *nickname)
stopc := make(chan struct{})
var wg sync.WaitGroup
wg.Add(1)
notificationLog, err := nflog.New(
nflog.WithMesh(func(g mesh.Gossiper) mesh.Gossip {
return mrouter.NewGossip("nflog", g)
}),
nflog.WithRetention(*retention),
nflog.WithSnapshot(filepath.Join(*dataDir, "nflog")),
nflog.WithMaintenance(15*time.Minute, stopc, wg.Done),
nflog.WithLogger(logger.With("component", "nflog")),
)
if err != nil {
log.Fatal(err)
}
marker := types.NewMarker()
silences, err := silence.New(silence.Options{
SnapshotFile: filepath.Join(*dataDir, "silences"),
Retention: *retention,
Logger: logger.With("component", "silences"),
Gossip: func(g mesh.Gossiper) mesh.Gossip {
return mrouter.NewGossip("silences", g)
},
})
if err != nil {
log.Fatal(err)
}
// Start providers before router potentially sends updates.
wg.Add(1)
go func() {
silences.Maintenance(15*time.Minute, filepath.Join(*dataDir, "silences"), stopc)
wg.Done()
}()
mrouter.Start()
defer func() {
close(stopc)
// Stop receiving updates from router before shutting down.
mrouter.Stop()
wg.Wait()
}()
mrouter.ConnectionMaker.InitiateConnections(peers.slice(), true)
alerts, err := mem.NewAlerts(*dataDir)
if err != nil {
log.Fatal(err)
}
defer alerts.Close()
var (
inhibitor *inhibit.Inhibitor
tmpl *template.Template
pipeline notify.Stage
disp *dispatch.Dispatcher
)
defer disp.Stop()
apiv := api.New(alerts, silences, func() dispatch.AlertOverview {
return disp.Groups()
})
amURL, err := extURL(*listenAddress, *externalURL)
if err != nil {
log.Fatal(err)
}
waitFunc := meshWait(mrouter, 5*time.Second)
timeoutFunc := func(d time.Duration) time.Duration {
if d < notify.MinTimeout {
d = notify.MinTimeout
}
return d + waitFunc()
}
reload := func() (err error) {
log.With("file", *configFile).Infof("Loading configuration file")
defer func() {
if err != nil {
log.With("file", *configFile).Errorf("Loading configuration file failed: %s", err)
configSuccess.Set(0)
} else {
configSuccess.Set(1)
configSuccessTime.Set(float64(time.Now().Unix()))
}
}()
conf, err := config.LoadFile(*configFile)
if err != nil {
return err
}
apiv.Update(conf.String(), time.Duration(conf.Global.ResolveTimeout))
tmpl, err = template.FromGlobs(conf.Templates...)
if err != nil {
return err
}
tmpl.ExternalURL = amURL
inhibitor.Stop()
disp.Stop()
inhibitor = inhibit.NewInhibitor(alerts, conf.InhibitRules, marker)
pipeline = notify.BuildPipeline(
conf.Receivers,
tmpl,
waitFunc,
inhibitor,
silences,
notificationLog,
marker,
)
disp = dispatch.NewDispatcher(alerts, dispatch.NewRoute(conf.Route, nil), pipeline, marker, timeoutFunc)
go disp.Run()
go inhibitor.Run()
return nil
}
if err := reload(); err != nil {
os.Exit(1)
}
router := route.New()
webReload := make(chan struct{})
ui.Register(router.WithPrefix(amURL.Path), webReload)
apiv.Register(router.WithPrefix(path.Join(amURL.Path, "/api")))
log.Infoln("Listening on", *listenAddress)
go listen(*listenAddress, router)
var (
hup = make(chan os.Signal)
hupReady = make(chan bool)
term = make(chan os.Signal)
)
signal.Notify(hup, syscall.SIGHUP)
signal.Notify(term, os.Interrupt, syscall.SIGTERM)
go func() {
<-hupReady
for {
select {
case <-hup:
case <-webReload:
}
reload()
}
}()
// Wait for reload or termination signals.
close(hupReady) // Unblock SIGHUP handler.
<-term
log.Infoln("Received SIGTERM, exiting gracefully...")
}
func main() {
var (
listenAddress = flag.String("web.listen-address", ":9101", "Address to listen on for web interface and telemetry.")
metricsPath = flag.String("web.telemetry-path", "/metrics", "Path under which to expose metrics.")
haProxyScrapeURI = flag.String("haproxy.scrape-uri", "http://localhost/;csv", "URI on which to scrape HAProxy.")
haProxyServerMetricFields = flag.String("haproxy.server-metric-fields", serverMetrics.String(), "Comma-seperated list of exported server metrics. See http://cbonte.github.io/haproxy-dconv/configuration-1.5.html#9.1")
haProxyTimeout = flag.Duration("haproxy.timeout", 5*time.Second, "Timeout for trying to get stats from HAProxy.")
haProxyPidFile = flag.String("haproxy.pid-file", "", "Path to haproxy's pid file.")
showVersion = flag.Bool("version", false, "Print version information.")
)
flag.Parse()
if *showVersion {
fmt.Fprintln(os.Stdout, version.Print("haproxy_exporter"))
os.Exit(0)
}
selectedServerMetrics, err := filterServerMetrics(*haProxyServerMetricFields)
if err != nil {
log.Fatal(err)
}
log.Infoln("Starting haproxy_exporter", version.Info())
log.Infoln("Build context", version.BuildContext())
exporter, err := NewExporter(*haProxyScrapeURI, selectedServerMetrics, *haProxyTimeout)
if err != nil {
log.Fatal(err)
}
prometheus.MustRegister(exporter)
prometheus.MustRegister(version.NewCollector("haproxy_exporter"))
if *haProxyPidFile != "" {
procExporter := prometheus.NewProcessCollectorPIDFn(
func() (int, error) {
content, err := ioutil.ReadFile(*haProxyPidFile)
if err != nil {
return 0, fmt.Errorf("Can't read pid file: %s", err)
}
value, err := strconv.Atoi(strings.TrimSpace(string(content)))
if err != nil {
return 0, fmt.Errorf("Can't parse pid file: %s", err)
}
return value, nil
}, namespace)
prometheus.MustRegister(procExporter)
}
log.Infoln("Listening on", *listenAddress)
http.Handle(*metricsPath, prometheus.Handler())
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
w.Write([]byte(`<html>
<head><title>Haproxy Exporter</title></head>
<body>
<h1>Haproxy Exporter</h1>
<p><a href='` + *metricsPath + `'>Metrics</a></p>
</body>
</html>`))
})
log.Fatal(http.ListenAndServe(*listenAddress, nil))
}
func main() {
var (
showVersion = flag.Bool("version", false, "Print version information.")
listenAddress = flag.String("web.listen-address", ":9100", "Address on which to expose metrics and web interface.")
metricsPath = flag.String("web.telemetry-path", "/metrics", "Path under which to expose metrics.")
enabledCollectors = flag.String("collectors.enabled", filterAvailableCollectors(defaultCollectors), "Comma-separated list of collectors to use.")
printCollectors = flag.Bool("collectors.print", false, "If true, print available collectors and exit.")
)
flag.Parse()
if *showVersion {
fmt.Fprintln(os.Stdout, version.Print("node_exporter"))
os.Exit(0)
}
log.Infoln("Starting node_exporter", version.Info())
log.Infoln("Build context", version.BuildContext())
if *printCollectors {
collectorNames := make(sort.StringSlice, 0, len(collector.Factories))
for n := range collector.Factories {
collectorNames = append(collectorNames, n)
}
collectorNames.Sort()
fmt.Printf("Available collectors:\n")
for _, n := range collectorNames {
fmt.Printf(" - %s\n", n)
}
return
}
collectors, err := loadCollectors(*enabledCollectors)
if err != nil {
log.Fatalf("Couldn't load collectors: %s", err)
}
log.Infof("Enabled collectors:")
for n := range collectors {
log.Infof(" - %s", n)
}
nodeCollector := NodeCollector{collectors: collectors}
prometheus.MustRegister(nodeCollector)
handler := prometheus.Handler()
http.Handle(*metricsPath, handler)
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
w.Write([]byte(`<html>
<head><title>Node Exporter</title></head>
<body>
<h1>Node Exporter</h1>
<p><a href="` + *metricsPath + `">Metrics</a></p>
</body>
</html>`))
})
log.Infoln("Listening on", *listenAddress)
err = http.ListenAndServe(*listenAddress, nil)
if err != nil {
log.Fatal(err)
}
}
// Main manages the startup and shutdown lifecycle of the entire Prometheus server.
func Main() int {
if err := parse(os.Args[1:]); err != nil {
log.Error(err)
return 2
}
if cfg.printVersion {
fmt.Fprintln(os.Stdout, version.Print("prometheus"))
return 0
}
log.Infoln("Starting prometheus", version.Info())
log.Infoln("Build context", version.BuildContext())
var reloadables []Reloadable
var (
memStorage = local.NewMemorySeriesStorage(&cfg.storage)
remoteStorage = remote.New(&cfg.remote)
sampleAppender = storage.Fanout{memStorage}
)
if remoteStorage != nil {
sampleAppender = append(sampleAppender, remoteStorage)
reloadables = append(reloadables, remoteStorage)
}
var (
notifier = notifier.New(&cfg.notifier)
targetManager = retrieval.NewTargetManager(sampleAppender)
queryEngine = promql.NewEngine(memStorage, &cfg.queryEngine)
)
ruleManager := rules.NewManager(&rules.ManagerOptions{
SampleAppender: sampleAppender,
Notifier: notifier,
QueryEngine: queryEngine,
ExternalURL: cfg.web.ExternalURL,
})
flags := map[string]string{}
cfg.fs.VisitAll(func(f *flag.Flag) {
flags[f.Name] = f.Value.String()
})
version := &web.PrometheusVersion{
Version: version.Version,
Revision: version.Revision,
Branch: version.Branch,
BuildUser: version.BuildUser,
BuildDate: version.BuildDate,
GoVersion: version.GoVersion,
}
webHandler := web.New(memStorage, queryEngine, targetManager, ruleManager, version, flags, &cfg.web)
reloadables = append(reloadables, targetManager, ruleManager, webHandler, notifier)
if !reloadConfig(cfg.configFile, reloadables...) {
return 1
}
// Wait for reload or termination signals. Start the handler for SIGHUP as
// early as possible, but ignore it until we are ready to handle reloading
// our config.
hup := make(chan os.Signal)
hupReady := make(chan bool)
signal.Notify(hup, syscall.SIGHUP)
go func() {
<-hupReady
for {
select {
case <-hup:
case <-webHandler.Reload():
}
reloadConfig(cfg.configFile, reloadables...)
}
}()
// Start all components. The order is NOT arbitrary.
if err := memStorage.Start(); err != nil {
log.Errorln("Error opening memory series storage:", err)
return 1
}
defer func() {
if err := memStorage.Stop(); err != nil {
log.Errorln("Error stopping storage:", err)
}
}()
if remoteStorage != nil {
prometheus.MustRegister(remoteStorage)
go remoteStorage.Run()
defer remoteStorage.Stop()
}
// The storage has to be fully initialized before registering.
prometheus.MustRegister(memStorage)
prometheus.MustRegister(notifier)
prometheus.MustRegister(configSuccess)
prometheus.MustRegister(configSuccessTime)
// The notifieris a dependency of the rule manager. It has to be
// started before and torn down afterwards.
go notifier.Run()
defer notifier.Stop()
go ruleManager.Run()
defer ruleManager.Stop()
go targetManager.Run()
defer targetManager.Stop()
// Shutting down the query engine before the rule manager will cause pending queries
// to be canceled and ensures a quick shutdown of the rule manager.
defer queryEngine.Stop()
go webHandler.Run()
// Wait for reload or termination signals.
close(hupReady) // Unblock SIGHUP handler.
term := make(chan os.Signal)
signal.Notify(term, os.Interrupt, syscall.SIGTERM)
select {
case <-term:
log.Warn("Received SIGTERM, exiting gracefully...")
case <-webHandler.Quit():
log.Warn("Received termination request via web service, exiting gracefully...")
case err := <-webHandler.ListenError():
log.Errorln("Error starting web server, exiting gracefully:", err)
}
log.Info("See you next time!")
return 0
}
// Main manages the startup and shutdown lifecycle of the entire Prometheus server.
func Main() int {
if err := parse(os.Args[1:]); err != nil {
log.Error(err)
return 2
}
if cfg.printVersion {
fmt.Fprintln(os.Stdout, version.Print("prometheus"))
return 0
}
log.Infoln("Starting prometheus", version.Info())
log.Infoln("Build context", version.BuildContext())
var (
sampleAppender = storage.Fanout{}
reloadables []Reloadable
)
var localStorage local.Storage
switch cfg.localStorageEngine {
case "persisted":
localStorage = local.NewMemorySeriesStorage(&cfg.storage)
sampleAppender = storage.Fanout{localStorage}
case "none":
localStorage = &local.NoopStorage{}
default:
log.Errorf("Invalid local storage engine %q", cfg.localStorageEngine)
return 1
}
remoteStorage, err := remote.New(&cfg.remote)
if err != nil {
log.Errorf("Error initializing remote storage: %s", err)
return 1
}
if remoteStorage != nil {
sampleAppender = append(sampleAppender, remoteStorage)
reloadables = append(reloadables, remoteStorage)
}
reloadableRemoteStorage := remote.NewConfigurable()
sampleAppender = append(sampleAppender, reloadableRemoteStorage)
reloadables = append(reloadables, reloadableRemoteStorage)
var (
notifier = notifier.New(&cfg.notifier)
targetManager = retrieval.NewTargetManager(sampleAppender)
queryEngine = promql.NewEngine(localStorage, &cfg.queryEngine)
ctx, cancelCtx = context.WithCancel(context.Background())
)
ruleManager := rules.NewManager(&rules.ManagerOptions{
SampleAppender: sampleAppender,
Notifier: notifier,
QueryEngine: queryEngine,
Context: ctx,
ExternalURL: cfg.web.ExternalURL,
})
cfg.web.Context = ctx
cfg.web.Storage = localStorage
cfg.web.QueryEngine = queryEngine
cfg.web.TargetManager = targetManager
cfg.web.RuleManager = ruleManager
cfg.web.Version = &web.PrometheusVersion{
Version: version.Version,
Revision: version.Revision,
Branch: version.Branch,
BuildUser: version.BuildUser,
BuildDate: version.BuildDate,
GoVersion: version.GoVersion,
}
cfg.web.Flags = map[string]string{}
cfg.fs.VisitAll(func(f *flag.Flag) {
cfg.web.Flags[f.Name] = f.Value.String()
})
webHandler := web.New(&cfg.web)
reloadables = append(reloadables, targetManager, ruleManager, webHandler, notifier)
if err := reloadConfig(cfg.configFile, reloadables...); err != nil {
log.Errorf("Error loading config: %s", err)
return 1
}
// Wait for reload or termination signals. Start the handler for SIGHUP as
// early as possible, but ignore it until we are ready to handle reloading
// our config.
hup := make(chan os.Signal)
hupReady := make(chan bool)
signal.Notify(hup, syscall.SIGHUP)
go func() {
<-hupReady
for {
select {
case <-hup:
if err := reloadConfig(cfg.configFile, reloadables...); err != nil {
log.Errorf("Error reloading config: %s", err)
}
case rc := <-webHandler.Reload():
if err := reloadConfig(cfg.configFile, reloadables...); err != nil {
log.Errorf("Error reloading config: %s", err)
rc <- err
} else {
rc <- nil
}
}
}
}()
// Start all components. The order is NOT arbitrary.
if err := localStorage.Start(); err != nil {
log.Errorln("Error opening memory series storage:", err)
return 1
}
defer func() {
if err := localStorage.Stop(); err != nil {
log.Errorln("Error stopping storage:", err)
}
}()
if remoteStorage != nil {
remoteStorage.Start()
defer remoteStorage.Stop()
}
defer reloadableRemoteStorage.Stop()
// The storage has to be fully initialized before registering.
if instrumentedStorage, ok := localStorage.(prometheus.Collector); ok {
prometheus.MustRegister(instrumentedStorage)
}
prometheus.MustRegister(notifier)
prometheus.MustRegister(configSuccess)
prometheus.MustRegister(configSuccessTime)
// The notifier is a dependency of the rule manager. It has to be
// started before and torn down afterwards.
go notifier.Run()
defer notifier.Stop()
go ruleManager.Run()
defer ruleManager.Stop()
go targetManager.Run()
defer targetManager.Stop()
// Shutting down the query engine before the rule manager will cause pending queries
// to be canceled and ensures a quick shutdown of the rule manager.
defer cancelCtx()
go webHandler.Run()
// Wait for reload or termination signals.
close(hupReady) // Unblock SIGHUP handler.
term := make(chan os.Signal)
signal.Notify(term, os.Interrupt, syscall.SIGTERM)
select {
case <-term:
log.Warn("Received SIGTERM, exiting gracefully...")
case <-webHandler.Quit():
log.Warn("Received termination request via web service, exiting gracefully...")
case err := <-webHandler.ListenError():
log.Errorln("Error starting web server, exiting gracefully:", err)
}
log.Info("See you next time!")
return 0
}
func main() {
flag.Parse()
printVersion()
if *showVersion {
os.Exit(0)
}
err := os.MkdirAll(*dataDir, 0777)
if err != nil {
log.Fatal(err)
}
db, err := sql.Open("sqlite3", filepath.Join(*dataDir, "am.db"))
if err != nil {
log.Fatal(err)
}
defer db.Close()
marker := types.NewMarker()
alerts, err := sqlite.NewAlerts(db)
if err != nil {
log.Fatal(err)
}
notifies, err := sqlite.NewNotifies(db)
if err != nil {
log.Fatal(err)
}
silences, err := sqlite.NewSilences(db, marker)
if err != nil {
log.Fatal(err)
}
var (
inhibitor *Inhibitor
tmpl *template.Template
disp *Dispatcher
)
defer disp.Stop()
api := NewAPI(alerts, silences, func() AlertOverview {
return disp.Groups()
})
build := func(rcvs []*config.Receiver) notify.Notifier {
var (
router = notify.Router{}
fanouts = notify.Build(rcvs, tmpl)
)
for name, fo := range fanouts {
for i, n := range fo {
n = notify.Retry(n)
n = notify.Log(n, log.With("step", "retry"))
n = notify.Dedup(notifies, n)
n = notify.Log(n, log.With("step", "dedup"))
fo[i] = n
}
router[name] = fo
}
n := notify.Notifier(router)
n = notify.Log(n, log.With("step", "route"))
n = notify.Silence(silences, n, marker)
n = notify.Log(n, log.With("step", "silence"))
n = notify.Inhibit(inhibitor, n, marker)
n = notify.Log(n, log.With("step", "inhibit"))
return n
}
reload := func() (err error) {
log.With("file", *configFile).Infof("Loading configuration file")
defer func() {
if err != nil {
log.With("file", *configFile).Errorf("Loading configuration file failed: %s", err)
}
}()
conf, err := config.LoadFile(*configFile)
if err != nil {
return err
}
api.Update(conf.String(), time.Duration(conf.Global.ResolveTimeout))
tmpl, err = template.FromGlobs(conf.Templates...)
if err != nil {
return err
}
if tmpl.ExternalURL, err = extURL(*externalURL); err != nil {
return err
}
disp.Stop()
inhibitor = NewInhibitor(alerts, conf.InhibitRules, marker)
disp = NewDispatcher(alerts, NewRoute(conf.Route, nil), build(conf.Receivers), marker)
go disp.Run()
return nil
}
if err := reload(); err != nil {
os.Exit(1)
}
router := route.New()
RegisterWeb(router)
api.Register(router.WithPrefix("/api"))
go http.ListenAndServe(*listenAddress, router)
var (
hup = make(chan os.Signal)
term = make(chan os.Signal)
)
signal.Notify(hup, syscall.SIGHUP)
signal.Notify(term, os.Interrupt, syscall.SIGTERM)
go func() {
for range hup {
reload()
}
}()
<-term
log.Infoln("Received SIGTERM, exiting gracefully...")
}