sample-spring-cloud-netflix-master - Error in starting the server

[ghost]

When I am trying to start the sample-gateway-service, getting the below error. This error coming in almost all the services. This is something very strange to me.

2018-10-24 00:12:16.136 ERROR 10192 --- [tbeatExecutor-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_GATEWAY-SERVICE/841DTN2.corp.mastercard.org:gateway-service - was unable to send heartbeat!

com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server
	at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:111) ~[eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89) ~[eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$3.execute(EurekaHttpClientDecorator.java:92) ~[eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) ~[eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89) ~[eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.DiscoveryClient.renew(DiscoveryClient.java:815) ~[eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.DiscoveryClient$HeartbeatThread.run(DiscoveryClient.java:1379) [eureka-client-1.6.2.jar:1.6.2]
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [na:1.8.0_162]
	at java.util.concurrent.FutureTask.run(Unknown Source) [na:1.8.0_162]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [na:1.8.0_162]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [na:1.8.0_162]
	at java.lang.Thread.run(Unknown Source) [na:1.8.0_162]

2018-10-24 00:12:16.167 ERROR 10192 --- [freshExecutor-0] c.n.d.s.t.d.RedirectingEurekaHttpClient  : Request execution error

com.sun.jersey.api.client.ClientHandlerException: java.net.ConnectException: Connection refused: connect
	at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle(ApacheHttpClient4Handler.java:187) ~[jersey-apache-client4-1.19.1.jar:1.19.1]
	at com.sun.jersey.api.client.filter.GZIPContentEncodingFilter.handle(GZIPContentEncodingFilter.java:123) ~[jersey-client-1.19.1.jar:1.19.1]
	at com.netflix.discovery.EurekaIdentityHeaderFilter.handle(EurekaIdentityHeaderFilter.java:27) ~[eureka-client-1.6.2.jar:1.6.2]
	at com.sun.jersey.api.client.Client.handle(Client.java:652) ~[jersey-client-1.19.1.jar:1.19.1]
	at com.sun.jersey.api.client.WebResource.handle(WebResource.java:682) ~[jersey-client-1.19.1.jar:1.19.1]
	at com.sun.jersey.api.client.WebResource.access$200(WebResource.java:74) ~[jersey-client-1.19.1.jar:1.19.1]
	at com.sun.jersey.api.client.WebResource$Builder.get(WebResource.java:509) ~[jersey-client-1.19.1.jar:1.19.1]
	at com.netflix.discovery.shared.transport.jersey.AbstractJerseyEurekaHttpClient.getApplicationsInternal(AbstractJerseyEurekaHttpClient.java:194) ~[eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.jersey.AbstractJerseyEurekaHttpClient.getApplications(AbstractJerseyEurekaHttpClient.java:165) ~[eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$6.execute(EurekaHttpClientDecorator.java:137) [eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.decorator.MetricsCollectingEurekaHttpClient.execute(MetricsCollectingEurekaHttpClient.java:73) ~[eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) [eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$6.execute(EurekaHttpClientDecorator.java:137) [eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.executeOnNewServer(RedirectingEurekaHttpClient.java:118) ~[eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.execute(RedirectingEurekaHttpClient.java:79) ~[eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) [eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$6.execute(EurekaHttpClientDecorator.java:137) [eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:119) [eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) [eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$6.execute(EurekaHttpClientDecorator.java:137) [eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) [eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) [eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.DiscoveryClient.getAndStoreFullRegistry(DiscoveryClient.java:1013) [eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.DiscoveryClient.fetchRegistry(DiscoveryClient.java:927) [eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.DiscoveryClient.refreshRegistry(DiscoveryClient.java:1451) [eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.DiscoveryClient$CacheRefreshThread.run(DiscoveryClient.java:1418) [eureka-client-1.6.2.jar:1.6.2]
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [na:1.8.0_162]
	at java.util.concurrent.FutureTask.run(Unknown Source) [na:1.8.0_162]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [na:1.8.0_162]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [na:1.8.0_162]
	at java.lang.Thread.run(Unknown Source) [na:1.8.0_162]
Caused by: java.net.ConnectException: Connection refused: connect
	at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) ~[na:1.8.0_162]
	at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source) ~[na:1.8.0_162]
	at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source) ~[na:1.8.0_162]
	at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source) ~[na:1.8.0_162]
	at java.net.AbstractPlainSocketImpl.connect(Unknown Source) ~[na:1.8.0_162]
	at java.net.PlainSocketImpl.connect(Unknown Source) ~[na:1.8.0_162]
	at java.net.SocksSocketImpl.connect(Unknown Source) ~[na:1.8.0_162]
	at java.net.Socket.connect(Unknown Source) ~[na:1.8.0_162]
	at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:121) ~[httpclient-4.5.3.jar:4.5.3]
	at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:180) ~[httpclient-4.5.3.jar:4.5.3]
	at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:144) ~[httpclient-4.5.3.jar:4.5.3]
	at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:134) ~[httpclient-4.5.3.jar:4.5.3]
	at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:610) ~[httpclient-4.5.3.jar:4.5.3]
	at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:445) ~[httpclient-4.5.3.jar:4.5.3]
	at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:835) ~[httpclient-4.5.3.jar:4.5.3]
	at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:118) ~[httpclient-4.5.3.jar:4.5.3]
	at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56) ~[httpclient-4.5.3.jar:4.5.3]
	at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle(ApacheHttpClient4Handler.java:173) ~[jersey-apache-client4-1.19.1.jar:1.19.1]
	... 30 common frames omitted

2018-10-24 00:12:16.167  WARN 10192 --- [freshExecutor-0] c.n.d.s.t.d.RetryableEurekaHttpClient    : Request execution failed with message: java.net.ConnectException: Connection refused: connect
2018-10-24 00:12:16.167 ERROR 10192 --- [freshExecutor-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_GATEWAY-SERVICE/841DTN2.corp.mastercard.org:gateway-service - was unable to refresh its cache! status = Cannot execute request on any known server

com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server
	at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:111) ~[eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) ~[eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$6.execute(EurekaHttpClientDecorator.java:137) ~[eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) ~[eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) ~[eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.DiscoveryClient.getAndStoreFullRegistry(DiscoveryClient.java:1013) [eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.DiscoveryClient.fetchRegistry(DiscoveryClient.java:927) [eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.DiscoveryClient.refreshRegistry(DiscoveryClient.java:1451) [eureka-client-1.6.2.jar:1.6.2]
	at com.netflix.discovery.DiscoveryClient$CacheRefreshThread.run(DiscoveryClient.java:1418) [eureka-client-1.6.2.jar:1.6.2]
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [na:1.8.0_162]
	at java.util.concurrent.FutureTask.run(Unknown Source) [na:1.8.0_162]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [na:1.8.0_162]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [na:1.8.0_162]
	at java.lang.Thread.run(Unknown Source) [na:1.8.0_162]

And on launch of : http://localhost:8080/

I am getting below error..
**Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.

Wed Oct 24 00:14:08 IST 2018
There was an unexpected error (type=Not Found, status=404).
No message available**