[#742] Add multiple listeners

Signed-off-by: Denis Kirillov <denis@nspcc.ru>

api/handler/api.go

@@ -28,7 +28,6 @@ type (
 		Policy             PlacementPolicy
 		DefaultMaxAge      int
 		NotificatorEnabled bool
-		TLSEnabled         bool
 		CopiesNumber       uint32
 	}
 

api/handler/attributes.go

@@ -94,7 +94,7 @@ func (h *handler) GetObjectAttributesHandler(w http.ResponseWriter, r *http.Requ
 	}
 	info := extendedInfo.ObjectInfo
 
-	encryptionParams, err := h.formEncryptionParams(r.Header)
+	encryptionParams, err := formEncryptionParams(r)
 	if err != nil {
 		h.logAndSendError(w, "invalid sse headers", reqInfo, err)
 		return

api/handler/copy.go

@@ -142,7 +142,7 @@ func (h *handler) CopyObjectHandler(w http.ResponseWriter, r *http.Request) {
 		}
 	}
 
-	encryptionParams, err := h.formEncryptionParams(r.Header)
+	encryptionParams, err := formEncryptionParams(r)
 	if err != nil {
 		h.logAndSendError(w, "invalid sse headers", reqInfo, err)
 		return

api/handler/encryption_test.go

@@ -3,6 +3,7 @@ package handler
 import (
 	"bytes"
 	"crypto/rand"
+	"crypto/tls"
 	"fmt"
 	"io"
 	"net/http"
@@ -284,6 +285,7 @@ func getEncryptedObjectRange(t *testing.T, tc *handlerContext, bktName, objName
 }
 
 func setEncryptHeaders(r *http.Request) {
+	r.TLS = &tls.ConnectionState{}
 	r.Header.Set(api.AmzServerSideEncryptionCustomerAlgorithm, layer.AESEncryptionAlgorithm)
 	r.Header.Set(api.AmzServerSideEncryptionCustomerKey, aes256Key)
 	r.Header.Set(api.AmzServerSideEncryptionCustomerKeyMD5, aes256KeyMD5)

api/handler/get.go

@@ -150,7 +150,7 @@ func (h *handler) GetObjectHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	encryptionParams, err := h.formEncryptionParams(r.Header)
+	encryptionParams, err := formEncryptionParams(r)
 	if err != nil {
 		h.logAndSendError(w, "invalid sse headers", reqInfo, err)
 		return

api/handler/handlers_test.go

@@ -93,7 +93,6 @@ func prepareHandlerContext(t *testing.T) *handlerContext {
 		log: l,
 		obj: layer.NewLayer(l, tp, layerCfg),
 		cfg: &Config{
-			TLSEnabled: true,
 			Policy: &placementPolicyMock{defaultPolicy: pp},
 		},
 	}

api/handler/head.go

@@ -53,7 +53,7 @@ func (h *handler) HeadObjectHandler(w http.ResponseWriter, r *http.Request) {
 	}
 	info := extendedInfo.ObjectInfo
 
-	encryptionParams, err := h.formEncryptionParams(r.Header)
+	encryptionParams, err := formEncryptionParams(r)
 	if err != nil {
 		h.logAndSendError(w, "invalid sse headers", reqInfo, err)
 		return

api/handler/multipart_upload.go

@@ -137,7 +137,7 @@ func (h *handler) CreateMultipartUploadHandler(w http.ResponseWriter, r *http.Re
 		}
 	}
 
-	p.Info.Encryption, err = h.formEncryptionParams(r.Header)
+	p.Info.Encryption, err = formEncryptionParams(r)
 	if err != nil {
 		h.logAndSendError(w, "invalid sse headers", reqInfo, err)
 		return
@@ -226,7 +226,7 @@ func (h *handler) UploadPartHandler(w http.ResponseWriter, r *http.Request) {
 		Reader:     r.Body,
 	}
 
-	p.Info.Encryption, err = h.formEncryptionParams(r.Header)
+	p.Info.Encryption, err = formEncryptionParams(r)
 	if err != nil {
 		h.logAndSendError(w, "invalid sse headers", reqInfo, err)
 		return
@@ -331,7 +331,7 @@ func (h *handler) UploadPartCopy(w http.ResponseWriter, r *http.Request) {
 		Range:      srcRange,
 	}
 
-	p.Info.Encryption, err = h.formEncryptionParams(r.Header)
+	p.Info.Encryption, err = formEncryptionParams(r)
 	if err != nil {
 		h.logAndSendError(w, "invalid sse headers", reqInfo, err)
 		return
@@ -573,7 +573,7 @@ func (h *handler) ListPartsHandler(w http.ResponseWriter, r *http.Request) {
 		PartNumberMarker: partNumberMarker,
 	}
 
-	p.Info.Encryption, err = h.formEncryptionParams(r.Header)
+	p.Info.Encryption, err = formEncryptionParams(r)
 	if err != nil {
 		h.logAndSendError(w, "invalid sse headers", reqInfo, err)
 		return
@@ -608,7 +608,7 @@ func (h *handler) AbortMultipartUploadHandler(w http.ResponseWriter, r *http.Req
 		Key:      reqInfo.ObjectName,
 	}
 
-	p.Encryption, err = h.formEncryptionParams(r.Header)
+	p.Encryption, err = formEncryptionParams(r)
 	if err != nil {
 		h.logAndSendError(w, "invalid sse headers", reqInfo, err)
 		return

api/handler/put.go

@@ -218,7 +218,7 @@ func (h *handler) PutObjectHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	encryption, err := h.formEncryptionParams(r.Header)
+	encryptionParams, err := formEncryptionParams(r)
 	if err != nil {
 		h.logAndSendError(w, "invalid sse headers", reqInfo, err)
 		return
@@ -230,7 +230,7 @@ func (h *handler) PutObjectHandler(w http.ResponseWriter, r *http.Request) {
 		Reader:       r.Body,
 		Size:         r.ContentLength,
 		Header:       metadata,
-		Encryption:   encryption,
+		Encryption:   encryptionParams,
 		CopiesNumber: copiesNumber,
 	}
 
@@ -304,7 +304,7 @@ func (h *handler) PutObjectHandler(w http.ResponseWriter, r *http.Request) {
 	if settings.VersioningEnabled() {
 		w.Header().Set(api.AmzVersionID, objInfo.VersionID())
 	}
-	if encryption.Enabled() {
+	if encryptionParams.Enabled() {
 		addSSECHeaders(w.Header(), r.Header)
 	}
 
@@ -326,16 +326,16 @@ func getCopiesNumberOrDefault(metadata map[string]string, defaultCopiesNumber ui
 	return uint32(copiesNumber), nil
 }
 
-func (h handler) formEncryptionParams(header http.Header) (enc encryption.Params, err error) {
+func formEncryptionParams(r *http.Request) (enc encryption.Params, err error) {
-	sseCustomerAlgorithm := header.Get(api.AmzServerSideEncryptionCustomerAlgorithm)
+	sseCustomerAlgorithm := r.Header.Get(api.AmzServerSideEncryptionCustomerAlgorithm)
-	sseCustomerKey := header.Get(api.AmzServerSideEncryptionCustomerKey)
+	sseCustomerKey := r.Header.Get(api.AmzServerSideEncryptionCustomerKey)
-	sseCustomerKeyMD5 := header.Get(api.AmzServerSideEncryptionCustomerKeyMD5)
+	sseCustomerKeyMD5 := r.Header.Get(api.AmzServerSideEncryptionCustomerKeyMD5)
 
 	if len(sseCustomerAlgorithm) == 0 && len(sseCustomerKey) == 0 && len(sseCustomerKeyMD5) == 0 {
 		return
 	}
 
-	if !h.cfg.TLSEnabled {
+	if r.TLS == nil {
 		return enc, errorsStd.New("encryption available only when TLS is enabled")
 	}
 

api/router.go

@@ -161,6 +161,7 @@ func logErrorResponse(l *zap.Logger) mux.MiddlewareFunc {
 
 			l.Info("call method",
 				zap.Int("status", lw.statusCode),
+				zap.String("host", r.Host),
 				zap.String("request_id", GetRequestID(r.Context())),
 				zap.String("method", mux.CurrentRoute(r).GetName()),
 				zap.String("bucket", reqInfo.BucketName),

cmd/s3-gw/app.go

@@ -2,12 +2,9 @@ package main
 
 import (
 	"context"
-	"crypto/tls"
 	"encoding/hex"
 	"encoding/json"
-	"errors"
 	"fmt"
-	"net"
 	"net/http"
 	"os"
 	"os/signal"
@@ -46,9 +43,10 @@ type (
 		obj  layer.Client
 		api  api.Handler
 
+		servers []Server
+
 		metrics        *appMetrics
 		bucketResolver *resolver.BucketResolver
-		tlsProvider    *certProvider
 		services       []*Service
 		settings       *appSettings
 		maxClients     api.MaxClients
@@ -67,15 +65,6 @@ type (
 		lvl    zap.AtomicLevel
 	}
 
-	certProvider struct {
-		Enabled bool
-
-		mu       sync.RWMutex
-		certPath string
-		keyPath  string
-		cert     *tls.Certificate
-	}
-
 	appMetrics struct {
 		logger   *zap.Logger
 		provider GateMetricsCollector
@@ -123,7 +112,7 @@ func newApp(ctx context.Context, log *Logger, v *viper.Viper) *App {
 func (a *App) init(ctx context.Context) {
 	a.initAPI(ctx)
 	a.initMetrics()
-	a.initTLSProvider()
+	a.initServers(ctx)
 }
 
 func (a *App) initLayer(ctx context.Context) {
@@ -206,12 +195,6 @@ func (a *App) initResolver() {
 	}
 }
 
-func (a *App) initTLSProvider() {
-	a.tlsProvider = &certProvider{
-		Enabled: a.cfg.IsSet(cfgTLSCertFile) || a.cfg.IsSet(cfgTLSKeyFile),
-	}
-}
-
 func (a *App) getResolverConfig() ([]string, *resolver.Config) {
 	resolveCfg := &resolver.Config{
 		NeoFS:      neofs.NewResolverNeoFS(a.pool),
@@ -401,44 +384,6 @@ func (m *appMetrics) Shutdown() {
 	m.mu.Unlock()
 }
 
-func (p *certProvider) GetCertificate(*tls.ClientHelloInfo) (*tls.Certificate, error) {
-	if !p.Enabled {
-		return nil, errors.New("cert provider: disabled")
-	}
-
-	p.mu.RLock()
-	defer p.mu.RUnlock()
-	return p.cert, nil
-}
-
-func (p *certProvider) UpdateCert(certPath, keyPath string) error {
-	if !p.Enabled {
-		return fmt.Errorf("tls disabled")
-	}
-
-	cert, err := tls.LoadX509KeyPair(certPath, keyPath)
-	if err != nil {
-		return fmt.Errorf("cannot load TLS key pair from certFile '%s' and keyFile '%s': %w", certPath, keyPath, err)
-	}
-
-	p.mu.Lock()
-	p.certPath = certPath
-	p.keyPath = keyPath
-	p.cert = &cert
-	p.mu.Unlock()
-	return nil
-}
-
-func (p *certProvider) FilePaths() (string, string) {
-	if !p.Enabled {
-		return "", ""
-	}
-
-	p.mu.RLock()
-	defer p.mu.RUnlock()
-	return p.certPath, p.keyPath
-}
-
 func remove(list []string, element string) []string {
 	for i, item := range list {
 		if item == element {
@@ -485,34 +430,15 @@ func (a *App) Serve(ctx context.Context) {
 
 	a.startServices()
 
-	go func() {
+	for i := range a.servers {
-		addr := a.cfg.GetString(cfgListenAddress)
+		go func(i int) {
-		a.log.Info("starting server", zap.String("bind", addr))
+			a.log.Info("starting server", zap.String("address", a.servers[i].Address()))
 
-		var lic net.ListenConfig
+			if err := srv.Serve(a.servers[i].Listener()); err != nil && err != http.ErrServerClosed {
-		ln, err := lic.Listen(ctx, "tcp", addr)
-		if err != nil {
-			a.log.Fatal("could not prepare listener", zap.Error(err))
-		}
-
-		if a.tlsProvider.Enabled {
-			certFile := a.cfg.GetString(cfgTLSCertFile)
-			keyFile := a.cfg.GetString(cfgTLSKeyFile)
-
-			a.log.Info("using certificate", zap.String("cert", certFile), zap.String("key", keyFile))
-			if err = a.tlsProvider.UpdateCert(certFile, keyFile); err != nil {
-				a.log.Fatal("failed to update cert", zap.Error(err))
-			}
-
-			ln = tls.NewListener(ln, &tls.Config{
-				GetCertificate: a.tlsProvider.GetCertificate,
-			})
-		}
-
-		if err = srv.Serve(ln); err != nil && err != http.ErrServerClosed {
 				a.log.Fatal("listen and serve", zap.Error(err))
 			}
-	}()
+		}(i)
+	}
 
 	sigs := make(chan os.Signal, 1)
 	signal.Notify(sigs, syscall.SIGHUP)
@@ -558,8 +484,8 @@ func (a *App) configReload() {
 		a.log.Warn("failed to reload resolvers", zap.Error(err))
 	}
 
-	if err := a.tlsProvider.UpdateCert(a.cfg.GetString(cfgTLSCertFile), a.cfg.GetString(cfgTLSKeyFile)); err != nil {
+	if err := a.updateServers(); err != nil {
-		a.log.Warn("failed to reload TLS certs", zap.Error(err))
+		a.log.Warn("failed to reload server parameters", zap.Error(err))
 	}
 
 	a.stopServices()
@@ -586,6 +512,8 @@ func (a *App) updateSettings() {
 }
 
 func (a *App) startServices() {
+	a.services = a.services[:0]
+
 	pprofService := NewPprofService(a.cfg, a.log)
 	a.services = append(a.services, pprofService)
 	go pprofService.Start()
@@ -595,6 +523,40 @@ func (a *App) startServices() {
 	go prometheusService.Start()
 }
 
+func (a *App) initServers(ctx context.Context) {
+	serversInfo := fetchServers(a.cfg)
+
+	a.servers = make([]Server, len(serversInfo))
+	for i, serverInfo := range serversInfo {
+		a.log.Info("added server",
+			zap.String("address", serverInfo.Address), zap.Bool("tls enabled", serverInfo.TLS.Enabled),
+			zap.String("tls cert", serverInfo.TLS.CertFile), zap.String("tls key", serverInfo.TLS.KeyFile))
+		a.servers[i] = newServer(ctx, serverInfo, a.log)
+	}
+}
+
+func (a *App) updateServers() error {
+	serversInfo := fetchServers(a.cfg)
+
+	if len(serversInfo) != len(a.servers) {
+		return fmt.Errorf("invalid servers configuration: amount mismatch: old '%d', new '%d", len(a.servers), len(serversInfo))
+	}
+
+	for i, serverInfo := range serversInfo {
+		if serverInfo.Address != a.servers[i].Address() {
+			return fmt.Errorf("invalid servers configuration: addresses mismatch: old '%s', new '%s", a.servers[i].Address(), serverInfo.Address)
+		}
+
+		if serverInfo.TLS.Enabled {
+			if err := a.servers[i].UpdateCert(serverInfo.TLS.CertFile, serverInfo.TLS.KeyFile); err != nil {
+				return fmt.Errorf("failed to update tls certs: %w", err)
+			}
+		}
+	}
+
+	return nil
+}
+
 func (a *App) stopServices() {
 	ctx, cancel := shutdownContext()
 	defer cancel()
@@ -690,7 +652,6 @@ func (a *App) initHandler() {
 		Policy:             a.settings.policies,
 		DefaultMaxAge:      handler.DefaultMaxAge,
 		NotificatorEnabled: a.cfg.GetBool(cfgEnableNATS),
-		TLSEnabled:         a.cfg.IsSet(cfgTLSKeyFile) && a.cfg.IsSet(cfgTLSCertFile),
 		CopiesNumber:       handler.DefaultCopiesNumber,
 	}
 

cmd/s3-gw/app_settings.go

@@ -42,7 +42,9 @@ const ( // Settings.
 	cmdWallet           = "wallet"
 	cmdAddress          = "address"
 
-	// HTTPS/TLS.
+	// Server.
+	cfgServer      = "server"
+	cfgTLSEnabled  = "tls.enabled"
 	cfgTLSKeyFile  = "tls.key_file"
 	cfgTLSCertFile = "tls.cert_file"
 
@@ -94,7 +96,6 @@ const ( // Settings.
 	cfgPProfEnabled      = "pprof.enabled"
 	cfgPProfAddress      = "pprof.address"
 
-	cfgListenAddress = "listen_address"
 	cfgListenDomains = "listen_domains"
 
 	// Peers.
@@ -118,6 +119,8 @@ const ( // Settings.
 	cmdPProf   = "pprof"
 	cmdMetrics = "metrics"
 
+	cmdListenAddress = "listen_address"
+
 	// Configuration of parameters of requests to NeoFS.
 	// Number of the object copies to consider PUT to NeoFS successful.
 	cfgSetCopiesNumber = "neofs.set_copies_number"
@@ -167,6 +170,28 @@ func fetchPeers(l *zap.Logger, v *viper.Viper) []pool.NodeParam {
 	return nodes
 }
 
+func fetchServers(v *viper.Viper) []ServerInfo {
+	var servers []ServerInfo
+
+	for i := 0; ; i++ {
+		key := cfgServer + "." + strconv.Itoa(i) + "."
+
+		var serverInfo ServerInfo
+		serverInfo.Address = v.GetString(key + "address")
+		serverInfo.TLS.Enabled = v.GetBool(key + cfgTLSEnabled)
+		serverInfo.TLS.KeyFile = v.GetString(key + cfgTLSKeyFile)
+		serverInfo.TLS.CertFile = v.GetString(key + cfgTLSCertFile)
+
+		if serverInfo.Address == "" {
+			break
+		}
+
+		servers = append(servers, serverInfo)
+	}
+
+	return servers
+}
+
 func newSettings() *viper.Viper {
 	v := viper.New()
 
@@ -198,7 +223,7 @@ func newSettings() *viper.Viper {
 	flags.Int(cfgMaxClientsCount, defaultMaxClientsCount, "set max-clients count")
 	flags.Duration(cfgMaxClientsDeadline, defaultMaxClientsDeadline, "set max-clients deadline")
 
-	flags.String(cfgListenAddress, "0.0.0.0:8080", "set address to listen")
+	flags.String(cmdListenAddress, "0.0.0.0:8080", "set address to listen")
 	flags.String(cfgTLSCertFile, "", "TLS certificate file to use")
 	flags.String(cfgTLSKeyFile, "", "TLS key file to use")
 
@@ -221,29 +246,19 @@ func newSettings() *viper.Viper {
 	v.SetDefault(cfgPProfAddress, "localhost:8085")
 	v.SetDefault(cfgPrometheusAddress, "localhost:8086")
 
-	// Binding flags
+	// Bind flags
-	if err := v.BindPFlag(cfgPProfEnabled, flags.Lookup(cmdPProf)); err != nil {
+	if err := bindFlags(v, flags); err != nil {
-		panic(err)
+		panic(fmt.Errorf("bind flags: %w", err))
-	}
-	if err := v.BindPFlag(cfgPrometheusEnabled, flags.Lookup(cmdMetrics)); err != nil {
-		panic(err)
-	}
-
-	if err := v.BindPFlags(flags); err != nil {
-		panic(err)
-	}
-
-	if err := v.BindPFlag(cfgWalletPath, flags.Lookup(cmdWallet)); err != nil {
-		panic(err)
-	}
-	if err := v.BindPFlag(cfgWalletAddress, flags.Lookup(cmdAddress)); err != nil {
-		panic(err)
 	}
 
 	if err := flags.Parse(os.Args); err != nil {
 		panic(err)
 	}
 
+	if v.IsSet(cfgServer+".0."+cfgTLSKeyFile) && v.IsSet(cfgServer+".0."+cfgTLSCertFile) {
+		v.Set(cfgServer+".0."+cfgTLSEnabled, true)
+	}
+
 	if resolveMethods != nil {
 		v.SetDefault(cfgResolveOrder, *resolveMethods)
 	}
@@ -252,6 +267,7 @@ func newSettings() *viper.Viper {
 		for i := range *peers {
 			v.SetDefault(cfgPeers+"."+strconv.Itoa(i)+".address", (*peers)[i])
 			v.SetDefault(cfgPeers+"."+strconv.Itoa(i)+".weight", 1)
+			v.SetDefault(cfgPeers+"."+strconv.Itoa(i)+".priority", 1)
 		}
 	}
 
@@ -306,6 +322,54 @@ func newSettings() *viper.Viper {
 	return v
 }
 
+func bindFlags(v *viper.Viper, flags *pflag.FlagSet) error {
+	if err := v.BindPFlag(cfgPProfEnabled, flags.Lookup(cmdPProf)); err != nil {
+		return err
+	}
+	if err := v.BindPFlag(cfgPrometheusEnabled, flags.Lookup(cmdMetrics)); err != nil {
+		return err
+	}
+	if err := v.BindPFlag(cmdConfig, flags.Lookup(cmdConfig)); err != nil {
+		return err
+	}
+	if err := v.BindPFlag(cfgWalletPath, flags.Lookup(cmdWallet)); err != nil {
+		return err
+	}
+	if err := v.BindPFlag(cfgWalletAddress, flags.Lookup(cmdAddress)); err != nil {
+		return err
+	}
+	if err := v.BindPFlag(cfgHealthcheckTimeout, flags.Lookup(cfgHealthcheckTimeout)); err != nil {
+		return err
+	}
+	if err := v.BindPFlag(cfgConnectTimeout, flags.Lookup(cfgConnectTimeout)); err != nil {
+		return err
+	}
+	if err := v.BindPFlag(cfgRebalanceInterval, flags.Lookup(cfgRebalanceInterval)); err != nil {
+		return err
+	}
+	if err := v.BindPFlag(cfgMaxClientsCount, flags.Lookup(cfgMaxClientsCount)); err != nil {
+		return err
+	}
+	if err := v.BindPFlag(cfgMaxClientsDeadline, flags.Lookup(cfgMaxClientsDeadline)); err != nil {
+		return err
+	}
+	if err := v.BindPFlag(cfgRPCEndpoint, flags.Lookup(cfgRPCEndpoint)); err != nil {
+		return err
+	}
+
+	if err := v.BindPFlag(cfgServer+".0.address", flags.Lookup(cmdListenAddress)); err != nil {
+		return err
+	}
+	if err := v.BindPFlag(cfgServer+".0."+cfgTLSKeyFile, flags.Lookup(cfgTLSKeyFile)); err != nil {
+		return err
+	}
+	if err := v.BindPFlag(cfgServer+".0."+cfgTLSCertFile, flags.Lookup(cfgTLSCertFile)); err != nil {
+		return err
+	}
+
+	return nil
+}
+
 func readConfig(v *viper.Viper) error {
 	cfgFileName := v.GetString(cmdConfig)
 	cfgFile, err := os.Open(cfgFileName)

cmd/s3-gw/server.go

@@ -0,0 +1,124 @@
+package main
+
+import (
+	"context"
+	"crypto/tls"
+	"errors"
+	"fmt"
+	"net"
+	"sync"
+
+	"go.uber.org/zap"
+)
+
+type (
+	ServerInfo struct {
+		Address string
+		TLS     ServerTLSInfo
+	}
+
+	ServerTLSInfo struct {
+		Enabled  bool
+		CertFile string
+		KeyFile  string
+	}
+
+	Server interface {
+		Address() string
+		Listener() net.Listener
+		UpdateCert(certFile, keyFile string) error
+	}
+
+	server struct {
+		address     string
+		listener    net.Listener
+		tlsProvider *certProvider
+	}
+
+	certProvider struct {
+		Enabled bool
+
+		mu       sync.RWMutex
+		certPath string
+		keyPath  string
+		cert     *tls.Certificate
+	}
+)
+
+func (s *server) Address() string {
+	return s.address
+}
+
+func (s *server) Listener() net.Listener {
+	return s.listener
+}
+
+func (s *server) UpdateCert(certFile, keyFile string) error {
+	return s.tlsProvider.UpdateCert(certFile, keyFile)
+}
+
+func newServer(ctx context.Context, serverInfo ServerInfo, logger *zap.Logger) *server {
+	var lic net.ListenConfig
+	ln, err := lic.Listen(ctx, "tcp", serverInfo.Address)
+	if err != nil {
+		logger.Fatal("could not prepare listener", zap.String("address", serverInfo.Address), zap.Error(err))
+	}
+
+	tlsProvider := &certProvider{
+		Enabled: serverInfo.TLS.Enabled,
+	}
+
+	if serverInfo.TLS.Enabled {
+		if err = tlsProvider.UpdateCert(serverInfo.TLS.CertFile, serverInfo.TLS.KeyFile); err != nil {
+			logger.Fatal("failed to update cert", zap.Error(err))
+		}
+
+		ln = tls.NewListener(ln, &tls.Config{
+			GetCertificate: tlsProvider.GetCertificate,
+		})
+	}
+
+	return &server{
+		address:     serverInfo.Address,
+		listener:    ln,
+		tlsProvider: tlsProvider,
+	}
+}
+
+func (p *certProvider) GetCertificate(*tls.ClientHelloInfo) (*tls.Certificate, error) {
+	if !p.Enabled {
+		return nil, errors.New("cert provider: disabled")
+	}
+
+	p.mu.RLock()
+	defer p.mu.RUnlock()
+	return p.cert, nil
+}
+
+func (p *certProvider) UpdateCert(certPath, keyPath string) error {
+	if !p.Enabled {
+		return fmt.Errorf("tls disabled")
+	}
+
+	cert, err := tls.LoadX509KeyPair(certPath, keyPath)
+	if err != nil {
+		return fmt.Errorf("cannot load TLS key pair from certFile '%s' and keyFile '%s': %w", certPath, keyPath, err)
+	}
+
+	p.mu.Lock()
+	p.certPath = certPath
+	p.keyPath = keyPath
+	p.cert = &cert
+	p.mu.Unlock()
+	return nil
+}
+
+func (p *certProvider) FilePaths() (string, string) {
+	if !p.Enabled {
+		return "", ""
+	}
+
+	p.mu.RLock()
+	defer p.mu.RUnlock()
+	return p.certPath, p.keyPath
+}

config/config.env

@@ -24,9 +24,14 @@ S3_GW_PEERS_2_PRIORITY=2
 S3_GW_PEERS_2_WEIGHT=0.9
 
 # Address to listen and TLS
-S3_GW_LISTEN_ADDRESS=0.0.0.0:8080
+S3_GW_SERVER_0_ADDRESS=0.0.0.0:8080
-S3_GW_TLS_CERT_FILE=/path/to/tls/cert
+S3_GW_SERVER_0_TLS_ENABLED=false
-S3_GW_TLS_KEY_FILE=/path/to/tls/key
+S3_GW_SERVER_0_TLS_CERT_FILE=/path/to/tls/cert
+S3_GW_SERVER_0_TLS_KEY_FILE=/path/to/tls/key
+S3_GW_SERVER_1_ADDRESS=0.0.0.0:8081
+S3_GW_SERVER_1_TLS_ENABLED=true
+S3_GW_SERVER_1_TLS_CERT_FILE=/path/to/tls/cert
+S3_GW_SERVER_1_TLS_KEY_FILE=/path/to/tls/key
 
 # Domains to be able to use virtual-hosted-style access to bucket.
 S3_GW_LISTEN_DOMAINS=s3dev.neofs.devenv

config/config.yaml

@@ -25,9 +25,15 @@ peers:
     priority: 2
     weight: 0.9
 
-# Address to listen and TLS
+server:
-listen_address: 0.0.0.0:8084
+  - address: 0.0.0.0:8080
-tls:
+    tls:
+      enabled: false
+      cert_file: /path/to/cert
+      key_file: /path/to/key
+  - address: 0.0.0.0:8081
+    tls:
+      enabled: true
       cert_file: /path/to/cert
       key_file: /path/to/key