java.net.ConnectException: Connection timed out

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Check if your firewall is not blocking your connection. If it's not, you might need to explicitly set advertised.host.name to advertised.host.name = yourIpAddress, this forces the hosts returned to be the resolvable IP address of your VM.

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Connection refused
java.net.ConnectException: Connection timed out
at sun.nio.ch.Net.connect(Native Method)
at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:525)
at kafka.network.BlockingChannel.connect(BlockingChannel.scala:57)
at kafka.producer.SyncProducer.connect(SyncProducer.scala:146)
at kafka.producer.SyncProducer.getOrMakeConnection(SyncProducer.scala:161)
at kafka.producer.SyncProducer.kafka$producer$SyncProducer$$doSend(SyncProducer.scala:68)
at kafka.producer.SyncProducer.send(SyncProducer.scala:112)
at kafka.client.ClientUtils$.fetchTopicMetadata(ClientUtils.scala:53)
at kafka.producer.BrokerPartitionInfo.updateInfo(BrokerPartitionInfo.scala:82)
at kafka.producer.async.DefaultEventHandler$$anonfun$handle$1.apply$mcV$sp(DefaultEventHandler.scala:67)
at kafka.utils.Utils$.swallow(Utils.scala:187)
at kafka.utils.Logging$class.swallowError(Logging.scala:105)
at kafka.utils.Utils$.swallowError(Utils.scala:46)
at kafka.producer.async.DefaultEventHandler.handle(DefaultEventHandler.scala:67)
at kafka.producer.async.ProducerSendThread.tryToHandle(ProducerSendThread.scala:104)
at kafka.producer.async.ProducerSendThread$$anonfun$processEvents$3.apply(ProducerSendThread.scala:87)
at kafka.producer.async.ProducerSendThread.processEvents(ProducerSendThread.scala:66)
at kafka.producer.async.ProducerSendThread.run(ProducerSendThread.scala:44)

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