diff --git a/README.md b/README.md
index 43b806de1..4d8cad822 100755
--- a/README.md
+++ b/README.md
@@ -209,6 +209,7 @@ Please select your language:
 
 ### V2 changes
 
+* v2.0, 2017-02-09, fix [#503][bug #503] disable utilities when reload a source. 2.0.233
 * v2.0, 2017-01-22, for [#752][bug #752] release the io then free it for kbps. 2.0.232
 * v2.0, 2017-01-18, fix [#750][bug #750] use specific error code for dns resolve. 2.0.231
 * <strong>v2.0, 2017-01-18, [2.0 beta4(2.0.230)][r2.0b4] released. 86334 lines.</strong>
@@ -1374,6 +1375,7 @@ Winlin
 [bug #749]: https://github.com/ossrs/srs/issues/749
 [bug #750]: https://github.com/ossrs/srs/issues/750
 [bug #752]: https://github.com/ossrs/srs/issues/752
+[bug #503]: https://github.com/ossrs/srs/issues/503
 [bug #xxxxxxxxxx]: https://github.com/ossrs/srs/issues/xxxxxxxxxx
 
 [bug #735]: https://github.com/ossrs/srs/issues/735
diff --git a/trunk/conf/bandwidth.conf b/trunk/conf/bandwidth.conf
index 33ce199b7..a0bf06004 100644
--- a/trunk/conf/bandwidth.conf
+++ b/trunk/conf/bandwidth.conf
@@ -3,6 +3,8 @@
 
 listen              1935;
 max_connections     1000;
+daemon              off;
+srs_log_tank        console;
 vhost __defaultVhost__ {
 }
 
diff --git a/trunk/conf/dvr.path.conf b/trunk/conf/dvr.path.conf
index 238822614..bd43b4e8b 100644
--- a/trunk/conf/dvr.path.conf
+++ b/trunk/conf/dvr.path.conf
@@ -5,6 +5,8 @@
 
 listen              1935;
 max_connections     1000;
+daemon              off;
+srs_log_tank        console;
 vhost __defaultVhost__ {
     dvr {
         enabled             on;
diff --git a/trunk/conf/dvr.segment.conf b/trunk/conf/dvr.segment.conf
index 039f0cb79..2d6bf1bf8 100644
--- a/trunk/conf/dvr.segment.conf
+++ b/trunk/conf/dvr.segment.conf
@@ -4,6 +4,8 @@
 
 listen              1935;
 max_connections     1000;
+daemon              off;
+srs_log_tank        console;
 vhost __defaultVhost__ {
     dvr {
         enabled      on;
diff --git a/trunk/conf/dvr.session.conf b/trunk/conf/dvr.session.conf
index 5429d20ca..385980944 100644
--- a/trunk/conf/dvr.session.conf
+++ b/trunk/conf/dvr.session.conf
@@ -4,6 +4,8 @@
 
 listen              1935;
 max_connections     1000;
+daemon              off;
+srs_log_tank        console;
 vhost __defaultVhost__ {
     dvr {
         enabled      on;
diff --git a/trunk/conf/edge.conf b/trunk/conf/edge.conf
index 46de82102..36acb431f 100644
--- a/trunk/conf/edge.conf
+++ b/trunk/conf/edge.conf
@@ -5,7 +5,8 @@
 listen              1935;
 max_connections     1000;
 pid                 objs/edge.pid;
-srs_log_file        ./objs/edge.log;
+daemon              off;
+srs_log_tank        console;
 vhost __defaultVhost__ {
     cluster {
         mode            remote;
diff --git a/trunk/conf/edge.token.traverse.conf b/trunk/conf/edge.token.traverse.conf
index 399f3bab2..6fe35b7e2 100644
--- a/trunk/conf/edge.token.traverse.conf
+++ b/trunk/conf/edge.token.traverse.conf
@@ -4,6 +4,8 @@
 
 listen              1935
 max_connections     1000;
+daemon              off;
+srs_log_tank        console;
 vhost __defaultVhost__ {
     cluster {
         mode            remote;
diff --git a/trunk/conf/ffmpeg.transcode.conf b/trunk/conf/ffmpeg.transcode.conf
index 1bb505556..d785a44ff 100644
--- a/trunk/conf/ffmpeg.transcode.conf
+++ b/trunk/conf/ffmpeg.transcode.conf
@@ -4,6 +4,8 @@
 
 listen              1935;
 max_connections     1000;
+daemon              off;
+srs_log_tank        console;
 vhost __defaultVhost__ {
     transcode {
         enabled     on;
diff --git a/trunk/conf/forward.master.conf b/trunk/conf/forward.master.conf
index bc141cf7a..630a4c84e 100644
--- a/trunk/conf/forward.master.conf
+++ b/trunk/conf/forward.master.conf
@@ -5,8 +5,8 @@
 listen              1935;
 max_connections     1000;
 pid                 ./objs/srs.master.pid;
-srs_log_tank        file;
-srs_log_file        ./objs/srs.master.log;
+daemon              off;
+srs_log_tank        console;
 vhost __defaultVhost__ {
     forward {
         enabled on;
diff --git a/trunk/conf/forward.slave.conf b/trunk/conf/forward.slave.conf
index 37316c2f5..98286e33e 100644
--- a/trunk/conf/forward.slave.conf
+++ b/trunk/conf/forward.slave.conf
@@ -5,7 +5,7 @@
 listen              19350;
 max_connections     1000;
 pid                 ./objs/srs.slave.pid;
-srs_log_tank        file;
-srs_log_file        ./objs/srs.slave.log;
+daemon              off;
+srs_log_tank        console;
 vhost __defaultVhost__ {
 }
diff --git a/trunk/conf/hds.conf b/trunk/conf/hds.conf
index 47811bcb7..c2a7d43ce 100644
--- a/trunk/conf/hds.conf
+++ b/trunk/conf/hds.conf
@@ -4,10 +4,8 @@
 
 listen              1935;
 max_connections     1000;
-
 daemon              off;
 srs_log_tank        console;
-srs_log_level       trace;
 
 vhost __defaultVhost__ {
     hds {
diff --git a/trunk/conf/hls.conf b/trunk/conf/hls.conf
index 8e1a09b65..d0fa42397 100644
--- a/trunk/conf/hls.conf
+++ b/trunk/conf/hls.conf
@@ -4,6 +4,8 @@
 
 listen              1935;
 max_connections     1000;
+daemon              off;
+srs_log_tank        console;
 vhost __defaultVhost__ {
     hls {
         enabled         on;
diff --git a/trunk/conf/http.aac.live.conf b/trunk/conf/http.aac.live.conf
index 52c885240..56a8387a6 100644
--- a/trunk/conf/http.aac.live.conf
+++ b/trunk/conf/http.aac.live.conf
@@ -4,6 +4,8 @@
 
 listen              1935;
 max_connections     1000;
+daemon              off;
+srs_log_tank        console;
 http_server {
     enabled         on;
     listen          8080;
diff --git a/trunk/conf/http.flv.live.conf b/trunk/conf/http.flv.live.conf
index 09ba1dffc..78c28546d 100644
--- a/trunk/conf/http.flv.live.conf
+++ b/trunk/conf/http.flv.live.conf
@@ -4,6 +4,8 @@
 
 listen              1935;
 max_connections     1000;
+daemon              off;
+srs_log_tank        console;
 http_server {
     enabled         on;
     listen          8080;
diff --git a/trunk/conf/http.flv.live.edge1.conf b/trunk/conf/http.flv.live.edge1.conf
index f77110219..23af7d1ca 100644
--- a/trunk/conf/http.flv.live.edge1.conf
+++ b/trunk/conf/http.flv.live.edge1.conf
@@ -5,7 +5,8 @@
 listen              19351;
 max_connections     1000;
 pid                 objs/srs.flv.19351.pid;
-srs_log_file        objs/srs.flv.19351.log;
+daemon              off;
+srs_log_tank        console;
 http_server {
     enabled         on;
     listen          8081;
diff --git a/trunk/conf/http.flv.live.edge2.conf b/trunk/conf/http.flv.live.edge2.conf
index a41c4a38f..fcf226066 100644
--- a/trunk/conf/http.flv.live.edge2.conf
+++ b/trunk/conf/http.flv.live.edge2.conf
@@ -5,7 +5,8 @@
 listen              19352;
 max_connections     1000;
 pid                 objs/srs.flv.19352.pid;
-srs_log_file        objs/srs.flv.19352.log;
+daemon              off;
+srs_log_tank        console;
 http_server {
     enabled         on;
     listen          8082;
diff --git a/trunk/conf/http.heartbeat.conf b/trunk/conf/http.heartbeat.conf
index b40287cfe..d15ff6a56 100644
--- a/trunk/conf/http.heartbeat.conf
+++ b/trunk/conf/http.heartbeat.conf
@@ -3,6 +3,8 @@
 
 listen              1935
 max_connections     1000;
+daemon              off;
+srs_log_tank        console;
 heartbeat {
     enabled         on;
     interval        9.3;
diff --git a/trunk/conf/http.hls.conf b/trunk/conf/http.hls.conf
index 0b098779f..17416a294 100644
--- a/trunk/conf/http.hls.conf
+++ b/trunk/conf/http.hls.conf
@@ -4,6 +4,8 @@
 
 listen              1935;
 max_connections     1000;
+daemon              off;
+srs_log_tank        console;
 http_server {
     enabled         on;
     listen          8080;
diff --git a/trunk/conf/http.hooks.callback.conf b/trunk/conf/http.hooks.callback.conf
index 06d636569..d5374d907 100644
--- a/trunk/conf/http.hooks.callback.conf
+++ b/trunk/conf/http.hooks.callback.conf
@@ -3,8 +3,8 @@
 
 listen              1935;
 max_connections     1000;
-srs_log_tank        file;
-srs_log_file        ./objs/srs.log;
+daemon              off;
+srs_log_tank        console;
 vhost __defaultVhost__ {
     http_hooks {
         enabled         on;
diff --git a/trunk/conf/http.mp3.live.conf b/trunk/conf/http.mp3.live.conf
index be8edceb7..d07f62086 100644
--- a/trunk/conf/http.mp3.live.conf
+++ b/trunk/conf/http.mp3.live.conf
@@ -4,6 +4,8 @@
 
 listen              1935;
 max_connections     1000;
+daemon              off;
+srs_log_tank        console;
 http_server {
     enabled         on;
     listen          8080;
diff --git a/trunk/conf/http.server.conf b/trunk/conf/http.server.conf
index e424b9fc7..f3aafc079 100644
--- a/trunk/conf/http.server.conf
+++ b/trunk/conf/http.server.conf
@@ -3,6 +3,8 @@
 
 listen              1935;
 max_connections     1000;
+daemon              off;
+srs_log_tank        console;
 http_server {
     enabled         on;
     listen          8080;
diff --git a/trunk/conf/http.ts.live.conf b/trunk/conf/http.ts.live.conf
index d46c24b9c..db6978c70 100644
--- a/trunk/conf/http.ts.live.conf
+++ b/trunk/conf/http.ts.live.conf
@@ -4,6 +4,8 @@
 
 listen              1935;
 max_connections     1000;
+daemon              off;
+srs_log_tank        console;
 http_server {
     enabled         on;
     listen          8080;
diff --git a/trunk/conf/ingest.conf b/trunk/conf/ingest.conf
index 7b3d1c2ed..d77a2f954 100644
--- a/trunk/conf/ingest.conf
+++ b/trunk/conf/ingest.conf
@@ -4,6 +4,8 @@
 
 listen              1935;
 max_connections     1000;
+daemon              off;
+srs_log_tank        console;
 vhost __defaultVhost__ {
     ingest livestream {
         enabled      on;
diff --git a/trunk/conf/origin.conf b/trunk/conf/origin.conf
index 121624611..287d4e98e 100644
--- a/trunk/conf/origin.conf
+++ b/trunk/conf/origin.conf
@@ -4,7 +4,7 @@
 
 listen              19350;
 max_connections     1000;
-pid                 objs/origin.pid;
-srs_log_file        ./objs/origin.log;
+daemon              off;
+srs_log_tank        console;
 vhost __defaultVhost__ {
 }
diff --git a/trunk/conf/push.flv.conf b/trunk/conf/push.flv.conf
index 63357df55..9e871f913 100644
--- a/trunk/conf/push.flv.conf
+++ b/trunk/conf/push.flv.conf
@@ -4,6 +4,8 @@
 
 listen              1935;
 max_connections     1000;
+daemon              off;
+srs_log_tank        console;
 http_server {
     enabled         on;
     listen          8080;
diff --git a/trunk/conf/push.mpegts.over.udp.conf b/trunk/conf/push.mpegts.over.udp.conf
index 65e6df358..82f2f04c8 100644
--- a/trunk/conf/push.mpegts.over.udp.conf
+++ b/trunk/conf/push.mpegts.over.udp.conf
@@ -5,6 +5,8 @@
 
 listen              1935;
 max_connections     1000;
+daemon              off;
+srs_log_tank        console;
 stream_caster {
     enabled         on;
     caster          mpegts_over_udp;
diff --git a/trunk/conf/push.rtsp.conf b/trunk/conf/push.rtsp.conf
index 619f74d90..016a06796 100644
--- a/trunk/conf/push.rtsp.conf
+++ b/trunk/conf/push.rtsp.conf
@@ -5,6 +5,8 @@
 
 listen              1935;
 max_connections     1000;
+daemon              off;
+srs_log_tank        console;
 stream_caster {
     enabled         on;
     caster          rtsp;
diff --git a/trunk/conf/realtime.conf b/trunk/conf/realtime.conf
index 26b9b989f..482add3ea 100644
--- a/trunk/conf/realtime.conf
+++ b/trunk/conf/realtime.conf
@@ -4,6 +4,8 @@
 
 listen              1935;
 max_connections     1000;
+daemon              off;
+srs_log_tank        console;
 vhost __defaultVhost__ {
     tcp_nodelay     on
     min_latency     on;
diff --git a/trunk/conf/rtmp.conf b/trunk/conf/rtmp.conf
index 94c740c50..e05f15408 100644
--- a/trunk/conf/rtmp.conf
+++ b/trunk/conf/rtmp.conf
@@ -4,5 +4,7 @@
 
 listen              1935;
 max_connections     1000;
+daemon              off;
+srs_log_tank        console;
 vhost __defaultVhost__ {
 }
diff --git a/trunk/conf/security.deny.publish.conf b/trunk/conf/security.deny.publish.conf
index 0c71bb9b2..fc2a2e809 100644
--- a/trunk/conf/security.deny.publish.conf
+++ b/trunk/conf/security.deny.publish.conf
@@ -4,6 +4,8 @@
 
 listen              1935;
 max_connections     1000;
+daemon              off;
+srs_log_tank        console;
 vhost __defaultVhost__ {
     security {
         enabled         on;
diff --git a/trunk/conf/transcode2hls.audio.only.conf b/trunk/conf/transcode2hls.audio.only.conf
index 21a1e42b8..f4361bfaa 100644
--- a/trunk/conf/transcode2hls.audio.only.conf
+++ b/trunk/conf/transcode2hls.audio.only.conf
@@ -4,6 +4,8 @@
 
 listen              1935;
 max_connections     1000;
+daemon              off;
+srs_log_tank        console;
 vhost __defaultVhost__ {
     hls {
         enabled         on;
diff --git a/trunk/conf/transform.edge.conf b/trunk/conf/transform.edge.conf
index d878f6bdf..2b950f5be 100644
--- a/trunk/conf/transform.edge.conf
+++ b/trunk/conf/transform.edge.conf
@@ -4,6 +4,8 @@
 
 listen              1935;
 max_connections     1000;
+daemon              off;
+srs_log_tank        console;
 vhost __defaultVhost__ {
 }
 vhost source.srs.com {
diff --git a/trunk/src/app/srs_app_source.cpp b/trunk/src/app/srs_app_source.cpp
index 4e11ef9cb..6fc607898 100755
--- a/trunk/src/app/srs_app_source.cpp
+++ b/trunk/src/app/srs_app_source.cpp
@@ -840,6 +840,7 @@ SrsOriginHub::SrsOriginHub(SrsSource* s)
 {
     source = s;
     req = NULL;
+    is_active = false;
     
 #ifdef SRS_AUTO_HLS
     hls = new SrsHls();
@@ -1141,11 +1142,15 @@ int SrsOriginHub::on_publish()
         return ret;
     }
     
+    is_active = true;
+    
     return ret;
 }
 
 void SrsOriginHub::on_unpublish()
 {
+    is_active = false;
+    
     // destroy all forwarders
     destroy_forwarders();
     
@@ -1261,6 +1266,12 @@ int SrsOriginHub::on_reload_vhost_forward(string vhost)
     
     // forwarders
     destroy_forwarders();
+    
+    // Don't start forwarders when source is not active.
+    if (!is_active) {
+        return ret;
+    }
+    
     if ((ret = create_forwarders()) != ERROR_SUCCESS) {
         srs_error("create forwarders failed. ret=%d", ret);
         return ret;
@@ -1283,6 +1294,12 @@ int SrsOriginHub::on_reload_vhost_hls(string vhost)
     
 #ifdef SRS_AUTO_HLS
     hls->on_unpublish();
+    
+    // Don't start forwarders when source is not active.
+    if (!is_active) {
+        return ret;
+    }
+    
     if ((ret = hls->on_publish(true)) != ERROR_SUCCESS) {
         srs_error("hls publish failed. ret=%d", ret);
         return ret;
@@ -1305,6 +1322,12 @@ int SrsOriginHub::on_reload_vhost_hds(string vhost)
     
 #ifdef SRS_AUTO_HDS
     hds->on_unpublish();
+    
+    // Don't start forwarders when source is not active.
+    if (!is_active) {
+        return ret;
+    }
+    
     if ((ret = hds->on_publish(req)) != ERROR_SUCCESS) {
         srs_error("hds publish failed. ret=%d", ret);
         return ret;
@@ -1329,6 +1352,11 @@ int SrsOriginHub::on_reload_vhost_dvr(string vhost)
     // cleanup dvr
     dvr->on_unpublish();
     
+    // Don't start forwarders when source is not active.
+    if (!is_active) {
+        return ret;
+    }
+    
     // reinitialize the dvr, update plan.
     if ((ret = dvr->initialize(this, req)) != ERROR_SUCCESS) {
         return ret;
@@ -1358,6 +1386,12 @@ int SrsOriginHub::on_reload_vhost_transcode(string vhost)
     
 #ifdef SRS_AUTO_TRANSCODE
     encoder->on_unpublish();
+    
+    // Don't start forwarders when source is not active.
+    if (!is_active) {
+        return ret;
+    }
+    
     if ((ret = encoder->on_publish(req)) != ERROR_SUCCESS) {
         srs_error("start encoder failed. ret=%d", ret);
         return ret;
@@ -1379,6 +1413,12 @@ int SrsOriginHub::on_reload_vhost_exec(string vhost)
     // TODO: FIXME: maybe should ignore when publish already stopped?
     
     ng_exec->on_unpublish();
+    
+    // Don't start forwarders when source is not active.
+    if (!is_active) {
+        return ret;
+    }
+    
     if ((ret = ng_exec->on_publish(req)) != ERROR_SUCCESS) {
         srs_error("start exec failed. ret=%d", ret);
         return ret;
diff --git a/trunk/src/app/srs_app_source.hpp b/trunk/src/app/srs_app_source.hpp
index 56b3128a9..8b48cd5c9 100644
--- a/trunk/src/app/srs_app_source.hpp
+++ b/trunk/src/app/srs_app_source.hpp
@@ -421,6 +421,8 @@ class SrsOriginHub : public ISrsReloadHandler
 private:
     SrsSource* source;
     SrsRequest* req;
+    // Whether the stream hub is active, or stream is publishing.
+    bool is_active;
 private:
     // hls handler.
 #ifdef SRS_AUTO_HLS