connection-timed out in the application, restart resolves it.

Issue

• Continuously getting 504 error for cms transtaction from multiple hosts on ha-proxy. So we are having 5 nodes each node have 5 childs the child1 have the cms transaction service. We are continuously getting 504 error from each node child1 in ha-proxy.

• Logs observed:

java.net.ConnectException: Connection timed out
        at java.net.PlainSocketImpl.socketConnect(Native Method)[:1.8.0_92]
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)[:1.8.0_92]
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)[:1.8.0_92]
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)[:1.8.0_92]
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)[:1.8.0_92]
        at java.net.Socket.connect(Socket.java:589)[:1.8.0_92]
        at java.net.Socket.connect(Socket.java:538)[:1.8.0_92]
        at java.net.Socket.<init>(Socket.java:434)[:1.8.0_92]
        at java.net.Socket.<init>(Socket.java:286)[:1.8.0_92]
        at org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:80)[322:org.apache.servicemix.bundles.commons-httpclient:3.1.0.7]
        at org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:122)[322:org.apache.servicemix.bundles.commons-httpclient:3.1.0.7]
        at org.apache.commons.httpclient.HttpConnection.open(HttpConnection.java:707)[322:org.apache.servicemix.bundles.commons-httpclient:3.1.0.7]
        at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$HttpConnectionAdapter.open(MultiThreadedHttpConnectionManager.java:1361)[322:org.apache.servicemix.bundles.commons-httpclient:3.1.0.7]
        at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:387)[322:org.apache.servicemix.bundles.commons-httpclient:3.1.0.7]
        at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171)[322:org.apache.servicemix.bundles.commons-httpclient:3.1.0.7]
        at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397)[322:org.apache.servicemix.bundles.commons-httpclient:3.1.0.7]
        at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:323)[322:org.apache.servicemix.bundles.commons-httpclient:3.1.0.7]
        at org.apache.camel.component.http.HttpProducer.executeMethod(HttpProducer.java:244)[290:org.apache.camel.camel-http:2.15.1.redhat-621107]
        at org.apache.camel.component.http.HttpProducer.process(HttpProducer.java:144)[290:org.apache.camel.camel-http:2.15.1.redhat-621107]
        at org.apache.camel.util.AsyncProcessorConverterHelper$ProcessorToAsyncProcessorBridge.process(AsyncProcessorConverterHelper.java:61)[285:org.apache.camel.camel-core:2.15.1.redhat-621107]
        at org.apache.camel.processor.SendProcessor.process(SendProcessor.java:139)[285:org.apache.camel.camel-core:2.15.1.redhat-621107]
        at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:77)[285:org.apache.camel.camel-core:2.15.1.redhat-621107]
        at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:448)[285:org.apache.camel.camel-core:2.15.1.redhat-621107]
        at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)[285:org.apache.camel.camel-core:2.15.1.redhat-621107]
        at org.apache.camel.processor.Pipeline.process(Pipeline.java:121)[285:org.apache.camel.camel-core:2.15.1.redhat-621107]
        at org.apache.camel.processor.Pipeline.process(Pipeline.java:83)[285:org.apache.camel.camel-core:2.15.1.redhat-621107]
        at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)[285:org.apache.camel.camel-core:2.15.1.redhat-621107]
        at org.apache.camel.component.direct.DirectProducer.process(DirectProducer.java:51)[285:org.apache.camel.camel-core:2.15.1.redhat-621107]
        at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:448)[285:org.apache.camel.camel-core:2.15.1.redhat-621107]
        at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)[285:org.apache.camel.camel-core:2.15.1.redhat-621107]
        at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:109)[285:org.apache.camel.camel-core:2.15.1.redhat-621107]
        at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:87)[285:org.apache.camel.camel-core:2.15.1.redhat-621107]
        at org.apache.camel.processor.WireTapProcessor$1.call(WireTapProcessor.java:129)[285:org.apache.camel.camel-core:2.15.1.redhat-621107]
        at org.apache.camel.processor.WireTapProcessor$1.call(WireTapProcessor.java:123)[285:org.apache.camel.camel-core:2.15.1.redhat-621107]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)[:1.8.0_92]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)[:1.8.0_92]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)[:1.8.0_92]
        at java.lang.Thread.run(Thread.java:745)[:1.8.0_92]