Logstash_forwarder connected to lostash-server-IP but never receive event

Elastic Stack Logstash
5

in logstash.log:

{:timestamp=>"2015-09-04T00:39:34.250000+0430", :message=>"SIGTERM received. Shutting down the pipeline.", :level=>:warn}
{:timestamp=>"2015-09-04T00:40:35.538000+0430", :message=>"SIGTERM received. Shutting down the pipeline.", :level=>:warn}
{:timestamp=>"2015-09-04T11:31:55.563000+0430", :message=>"SIGTERM received. Shutting down the pipeline.", :level=>:warn}
{:timestamp=>"2015-09-07T11:19:58.811000+0430", :message=>"SIGTERM received. Shutting down the pipeline.", :level=>:warn}

in logstash.err:

Sep 07, 2015 11:20:28 AM org.elasticsearch.node.internal.InternalNode <init>
INFO: [logstash-ubuntu-3991-11624] version[1.7.0], pid[3991], build[929b973/2015-07-16T14:31:07Z]
Sep 07, 2015 11:20:28 AM org.elasticsearch.node.internal.InternalNode <init>
INFO: [logstash-ubuntu-3991-11624] initializing ...
Sep 07, 2015 11:20:28 AM org.elasticsearch.plugins.PluginsService <init>
INFO: [logstash-ubuntu-3991-11624] loaded [], sites []
Sep 07, 2015 11:20:31 AM org.elasticsearch.bootstrap.Natives <clinit>
WARNING: JNA not found. native methods will be disabled.
Sep 07, 2015 11:20:33 AM org.elasticsearch.node.internal.InternalNode <init>
INFO: [logstash-ubuntu-3991-11624] initialized
Sep 07, 2015 11:20:33 AM org.elasticsearch.node.internal.InternalNode start
INFO: [logstash-ubuntu-3991-11624] starting ...
Sep 07, 2015 11:20:33 AM org.elasticsearch.transport.TransportService doStart
INFO: [logstash-ubuntu-3991-11624] bound_address {inet[/0:0:0:0:0:0:0:0:9301]}, publish_address {inet[/192.168.1.101:9301]}
 Sep 07, 2015 11:20:33 AM org.elasticsearch.discovery.DiscoveryService doStart
 INFO: [logstash-ubuntu-3991-11624] elasticsearch/45uWWit4QGKWVLAL-k37lg
 Sep 07, 2015 11:20:36 AM org.elasticsearch.cluster.service.InternalClusterService$UpdateTask run
 INFO: [logstash-ubuntu-3991-11624] detected_master [Puff Adder][PVDxbetbRNGFZ_Fdo75BYA][ubuntu][inet[/127.0.0.1:9300]], added {[Puff Adder][PVDxbetbRNGFZ_Fdo75BYA][ubuntu][inet[/127.0.0.1:9300]],}, reason: zen-disco-receive(from master [[Puff Adder][PVDxbetbRNGFZ_Fdo75BYA][ubuntu][inet[/127.0.0.1:9300]]])
Sep 07, 2015 11:20:36 AM org.elasticsearch.node.internal.InternalNode start
INFO: [logstash-ubuntu-3991-11624] started

So what should i do now???