diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8a49855a1..9d438cdb0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,41 @@
 # Change Log
 
+## [v1.5.0-rc2](https://github.com/containous/traefik/tree/v1.5.0-rc2) (2017-12-06)
+[All Commits](https://github.com/containous/traefik/compare/v1.5.0-rc1...v1.5.0-rc2)
+
+**Bug fixes:**
+- **[acme]** Modify the ACME renewing logs level ([#2520](https://github.com/containous/traefik/pull/2520) by [nmengin](https://github.com/nmengin))
+- **[api]** Fix pprof route order. ([#2523](https://github.com/containous/traefik/pull/2523) by [timoreimann](https://github.com/timoreimann))
+- **[docker,k8s]** Change custom headers separator ([#2509](https://github.com/containous/traefik/pull/2509) by [ldez](https://github.com/ldez))
+- **[docker,k8s]** Fix Labels/annotation logs and values. ([#2488](https://github.com/containous/traefik/pull/2488) by [ldez](https://github.com/ldez))
+- **[docker]** Quote template strings ([#2496](https://github.com/containous/traefik/pull/2496) by [dtomcej](https://github.com/dtomcej))
+- **[docker]** Fix empty IP for backend when dnsrr in Docker swarm mode ([#2490](https://github.com/containous/traefik/pull/2490) by [mmatur](https://github.com/mmatur))
+- **[healthcheck]** Fix healthcheck when web is not specified ([#2529](https://github.com/containous/traefik/pull/2529) by [Juliens](https://github.com/Juliens))
+- **[k8s]** Reduce logs with new Kubernetes security annotations ([#2506](https://github.com/containous/traefik/pull/2506) by [ldez](https://github.com/ldez))
+- **[metrics]** Do not ignore web params when web.metrics.prometheus is set ([#2499](https://github.com/containous/traefik/pull/2499) by [Juliens](https://github.com/Juliens))
+- **[metrics]** Fix metrics problem on multiple entrypoints ([#2492](https://github.com/containous/traefik/pull/2492) by [Juliens](https://github.com/Juliens))
+- Close ring buffer used in throttling function. ([#2532](https://github.com/containous/traefik/pull/2532) by [timoreimann](https://github.com/timoreimann))
+- Fix wrong default entrypoint and non-existing entrypoint issue ([#2501](https://github.com/containous/traefik/pull/2501) by [Juliens](https://github.com/Juliens))
+
+**Documentation:**
+- **[consul]** Improve Consul documentation ([#2485](https://github.com/containous/traefik/pull/2485) by [mmatur](https://github.com/mmatur))
+- **[docker]** Fix Docker labels documentation render. ([#2505](https://github.com/containous/traefik/pull/2505) by [ldez](https://github.com/ldez))
+- **[k8s]** Add note to Kubernetes RBAC docs about RoleBindings and namespaces ([#2498](https://github.com/containous/traefik/pull/2498) by [jmara](https://github.com/jmara))
+
+**Misc:**
+- Merge v1.4.5 into v1.5 ([#2530](https://github.com/containous/traefik/pull/2530) by [mmatur](https://github.com/mmatur))
+
+## [v1.4.5](https://github.com/containous/traefik/tree/v1.4.5) (2017-12-05)
+[All Commits](https://github.com/containous/traefik/compare/v1.4.4...v1.4.5)
+
+**Bug fixes:**
+- **[docker]** Fix empty ip when container is stopped ([#2478](https://github.com/containous/traefik/pull/2478) by [mmatur](https://github.com/mmatur))
+- **[k8s]** Fix kubernetes path prefix rule with rewrite-target ([#2461](https://github.com/containous/traefik/pull/2461) by [cheungpat](https://github.com/cheungpat))
+
+**Documentation:**
+- **[file]** Emphasize the necessity of enabling file backend ([#2483](https://github.com/containous/traefik/pull/2483) by [mvasin](https://github.com/mvasin))
+- Add link to future 1.5 documentation. ([#2477](https://github.com/containous/traefik/pull/2477) by [ldez](https://github.com/ldez))
+
 ## [v1.5.0-rc1](https://github.com/containous/traefik/tree/v1.5.0-rc1) (2017-11-28)
 [All Commits](https://github.com/containous/traefik/compare/v1.4.0-rc1...v1.5.0-rc1)
 
diff --git a/acme/acme.go b/acme/acme.go
index 06e5c116f..ebb60aa3e 100644
--- a/acme/acme.go
+++ b/acme/acme.go
@@ -394,44 +394,27 @@ func (a *ACME) retrieveCertificates() {
 
 func (a *ACME) renewCertificates() {
 	a.jobs.In() <- func() {
-		log.Debug("Testing certificate renew...")
+		log.Info("Testing certificate renew...")
 		account := a.store.Get().(*Account)
 		for _, certificateResource := range account.DomainsCertificate.Certs {
 			if certificateResource.needRenew() {
-				log.Debugf("Renewing certificate %+v", certificateResource.Domains)
-				renewedCert, err := a.client.RenewCertificate(acme.CertificateResource{
-					Domain:        certificateResource.Certificate.Domain,
-					CertURL:       certificateResource.Certificate.CertURL,
-					CertStableURL: certificateResource.Certificate.CertStableURL,
-					PrivateKey:    certificateResource.Certificate.PrivateKey,
-					Certificate:   certificateResource.Certificate.Certificate,
-				}, true, OSCPMustStaple)
+				log.Infof("Renewing certificate from LE : %+v", certificateResource.Domains)
+				renewedACMECert, err := a.renewACMECertificate(certificateResource)
 				if err != nil {
-					log.Errorf("Error renewing certificate: %v", err)
+					log.Errorf("Error renewing certificate from LE: %v", err)
 					continue
 				}
-				log.Debugf("Renewed certificate %+v", certificateResource.Domains)
-				renewedACMECert := &Certificate{
-					Domain:        renewedCert.Domain,
-					CertURL:       renewedCert.CertURL,
-					CertStableURL: renewedCert.CertStableURL,
-					PrivateKey:    renewedCert.PrivateKey,
-					Certificate:   renewedCert.Certificate,
+				operation := func() error {
+					return a.storeRenewedCertificate(account, certificateResource, renewedACMECert)
 				}
-				transaction, object, err := a.store.Begin()
+				notify := func(err error, time time.Duration) {
+					log.Warnf("Renewed certificate storage error: %v, retrying in %s", err, time)
+				}
+				ebo := backoff.NewExponentialBackOff()
+				ebo.MaxElapsedTime = 60 * time.Second
+				err = backoff.RetryNotify(safe.OperationWithRecover(operation), ebo, notify)
 				if err != nil {
-					log.Errorf("Error renewing certificate: %v", err)
-					continue
-				}
-				account = object.(*Account)
-				err = account.DomainsCertificate.renewCertificates(renewedACMECert, certificateResource.Domains)
-				if err != nil {
-					log.Errorf("Error renewing certificate: %v", err)
-					continue
-				}
-
-				if err = transaction.Commit(account); err != nil {
-					log.Errorf("Error Saving ACME account %+v: %s", account, err.Error())
+					log.Errorf("Datastore cannot sync: %v", err)
 					continue
 				}
 			}
@@ -439,6 +422,56 @@ func (a *ACME) renewCertificates() {
 	}
 }
 
+func (a *ACME) renewACMECertificate(certificateResource *DomainsCertificate) (*Certificate, error) {
+	renewedCert, err := a.client.RenewCertificate(acme.CertificateResource{
+		Domain:        certificateResource.Certificate.Domain,
+		CertURL:       certificateResource.Certificate.CertURL,
+		CertStableURL: certificateResource.Certificate.CertStableURL,
+		PrivateKey:    certificateResource.Certificate.PrivateKey,
+		Certificate:   certificateResource.Certificate.Certificate,
+	}, true, OSCPMustStaple)
+	if err != nil {
+		return nil, err
+	}
+	log.Infof("Renewed certificate from  LE: %+v", certificateResource.Domains)
+	return &Certificate{
+		Domain:        renewedCert.Domain,
+		CertURL:       renewedCert.CertURL,
+		CertStableURL: renewedCert.CertStableURL,
+		PrivateKey:    renewedCert.PrivateKey,
+		Certificate:   renewedCert.Certificate,
+	}, nil
+}
+
+func (a *ACME) storeRenewedCertificate(account *Account, certificateResource *DomainsCertificate, renewedACMECert *Certificate) error {
+	transaction, object, err := a.store.Begin()
+	if err != nil {
+		return fmt.Errorf("error during transaction initialization for renewing certificate: %v", err)
+	}
+
+	log.Infof("Renewing certificate in data store : %+v ", certificateResource.Domains)
+	account = object.(*Account)
+	err = account.DomainsCertificate.renewCertificates(renewedACMECert, certificateResource.Domains)
+	if err != nil {
+		return fmt.Errorf("error renewing certificate in datastore: %v ", err)
+	}
+
+	log.Infof("Commit certificate renewed in data store : %+v", certificateResource.Domains)
+	if err = transaction.Commit(account); err != nil {
+		return fmt.Errorf("error saving ACME account %+v: %v", account, err)
+	}
+
+	oldAccount := a.store.Get().(*Account)
+	for _, oldCertificateResource := range oldAccount.DomainsCertificate.Certs {
+		if oldCertificateResource.Domains.Main == certificateResource.Domains.Main && strings.Join(oldCertificateResource.Domains.SANs, ",") == strings.Join(certificateResource.Domains.SANs, ",") && certificateResource.Certificate != renewedACMECert {
+			return fmt.Errorf("renewed certificate not stored: %+v", certificateResource.Domains)
+		}
+	}
+
+	log.Infof("Certificate successfully renewed in data store: %+v", certificateResource.Domains)
+	return nil
+}
+
 func dnsOverrideDelay(delay int) error {
 	var err error
 	if delay > 0 {
@@ -448,7 +481,7 @@ func dnsOverrideDelay(delay int) error {
 			return true, nil
 		}
 	} else if delay < 0 {
-		err = fmt.Errorf("Invalid negative DelayDontCheckDNS: %d", delay)
+		err = fmt.Errorf("invalid negative DelayDontCheckDNS: %d", delay)
 	}
 	return err
 }
diff --git a/api/debug.go b/api/debug.go
index 53cc1ccf8..4ddca7c28 100644
--- a/api/debug.go
+++ b/api/debug.go
@@ -38,9 +38,9 @@ func (g DebugHandler) AddRoutes(router *mux.Router) {
 			fmt.Fprint(w, "\n}\n")
 		})
 
-	router.Methods(http.MethodGet).PathPrefix("/debug/pprof/").HandlerFunc(pprof.Index)
 	router.Methods(http.MethodGet).PathPrefix("/debug/pprof/cmdline").HandlerFunc(pprof.Cmdline)
 	router.Methods(http.MethodGet).PathPrefix("/debug/pprof/profile").HandlerFunc(pprof.Profile)
 	router.Methods(http.MethodGet).PathPrefix("/debug/pprof/symbol").HandlerFunc(pprof.Symbol)
 	router.Methods(http.MethodGet).PathPrefix("/debug/pprof/trace").HandlerFunc(pprof.Trace)
+	router.Methods(http.MethodGet).PathPrefix("/debug/pprof/").HandlerFunc(pprof.Index)
 }
diff --git a/cmd/traefik/healthcheck.go b/cmd/traefik/healthcheck.go
index 876d0d04f..9f926dd6f 100644
--- a/cmd/traefik/healthcheck.go
+++ b/cmd/traefik/healthcheck.go
@@ -64,6 +64,9 @@ func healthCheck(globalConfiguration configuration.GlobalConfiguration) (*http.R
 		}
 		client.Transport = tr
 	}
-
-	return client.Head(protocol + "://" + pingEntryPoint.Address + globalConfiguration.Web.Path + "ping")
+	path := "/"
+	if globalConfiguration.Web != nil {
+		path = globalConfiguration.Web.Path
+	}
+	return client.Head(protocol + "://" + pingEntryPoint.Address + path + "ping")
 }
diff --git a/docs/basics.md b/docs/basics.md
index ffe71ec84..76fc323c3 100644
--- a/docs/basics.md
+++ b/docs/basics.md
@@ -620,7 +620,7 @@ This command allows to check the health of Traefik. Its exit status is `0` if Tr
 This can be used with Docker [HEALTHCHECK](https://docs.docker.com/engine/reference/builder/#healthcheck) instruction or any other health check orchestration mechanism.
 
 !!! note
-    The [`web` provider](/configuration/backends/web) must be enabled to allow `/ping` calls by the `healthcheck` command.
+    The [`ping`](/configuration/ping) must be enabled to allow the `healthcheck` command to call `/ping`.
 
 ```bash
 traefik healthcheck
diff --git a/docs/configuration/backends/file.md b/docs/configuration/backends/file.md
index ff77385ed..2621a5695 100644
--- a/docs/configuration/backends/file.md
+++ b/docs/configuration/backends/file.md
@@ -8,6 +8,8 @@ You have three choices:
 - [Rules in a Separate File](/configuration/backends/file/#rules-in-a-separate-file)
 - [Multiple `.toml` Files](/configuration/backends/file/#multiple-toml-files)
 
+To enable the file backend, you must either pass the `--file` option to the Træfik binary or put the `[file]` section (with or without inner settings) in the configuration file.
+
 The configuration file allows managing both backends/frontends and HTTPS certificates (which are not [Let's Encrypt](https://letsencrypt.org) certificates generated through Træfik).
 
 ## Simple
@@ -25,8 +27,8 @@ defaultEntryPoints = ["http", "https"]
   [entryPoints.https]
   address = ":443"
     [entryPoints.https.tls]
-      [[entryPoints.https.tls.certificates]]		
-      certFile = "integration/fixtures/https/snitest.org.cert"		
+      [[entryPoints.https.tls.certificates]]
+      certFile = "integration/fixtures/https/snitest.org.cert"
       keyFile = "integration/fixtures/https/snitest.org.key"
 
 [file]
@@ -153,15 +155,16 @@ filename = "rules.toml"
   entrypoints = ["http", "https"] # overrides defaultEntryPoints
   backend = "backend2"
   rule = "Path:/test"
+  
 # HTTPS certificate
 [[tlsConfiguration]]
-entryPoints = ["https"]
+  entryPoints = ["https"]
   [tlsConfiguration.certificate]
     certFile = "integration/fixtures/https/snitest.com.cert"
     keyFile = "integration/fixtures/https/snitest.com.key"
 
 [[tlsConfiguration]]
-entryPoints = ["https"]
+  entryPoints = ["https"]
   [[tlsConfiguration.certificates]]
   certFile = "integration/fixtures/https/snitest.org.cert"
   keyFile = "integration/fixtures/https/snitest.org.key"
diff --git a/docs/user-guide/kubernetes.md b/docs/user-guide/kubernetes.md
index c5fa9b3ec..b146515ed 100644
--- a/docs/user-guide/kubernetes.md
+++ b/docs/user-guide/kubernetes.md
@@ -21,6 +21,9 @@ If your cluster is configured with RBAC, you will need to authorize Træfik to u
 
 RoleBindings per namespace enable to restrict granted permissions to the very namespaces only that Træfik is watching over, thereby following the least-privileges principle. This is the preferred approach if Træfik is not supposed to watch all namespaces, and the set of namespaces does not change dynamically. Otherwise, a single ClusterRoleBinding must be employed.
 
+!!! note
+    RoleBindings per namespace are available in Træfik 1.5 and later. Please use ClusterRoleBindings for older versions.
+
 For the sake of simplicity, this guide will use a ClusterRoleBinding:
 
 ```yaml
@@ -75,7 +78,7 @@ For namespaced restrictions, one RoleBinding is required per watched namespace a
 
 It is possible to use Træfik with a [Deployment](https://kubernetes.io/docs/concepts/workloads/controllers/deployment/) or a [DaemonSet](https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/) object,
  whereas both options have their own pros and cons:
- 
+
 - The scalability is much better when using a Deployment, because you will have a Single-Pod-per-Node model when using the DeaemonSet.  
 - It is possible to exclusively run a Service on a dedicated set of machines using taints and tolerations with a DaemonSet.  
 - On the other hand the DaemonSet allows you to access any Node directly on Port 80 and 443, where you have to setup a [Service](https://kubernetes.io/docs/concepts/services-networking/service/) object with a Deployment.
diff --git a/server/server.go b/server/server.go
index 1300fddb7..729955fe3 100644
--- a/server/server.go
+++ b/server/server.go
@@ -374,6 +374,7 @@ func (s *Server) preLoadConfiguration(configMsg types.ConfigMessage) {
 // it will publish the last of the newly received configurations.
 func throttleProviderConfigReload(throttle time.Duration, publish chan<- types.ConfigMessage, in <-chan types.ConfigMessage, stop chan bool) {
 	ring := channels.NewRingChannel(1)
+	defer ring.Close()
 
 	safe.Go(func() {
 		for {