java.net.ConnectException: Connection refused

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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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java.net.ConnectException: Connection refused
at sun.nio.ch.Net.connect(Native Method)
at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:507)
at java.nio.channels.SocketChannel.open(SocketChannel.java:146)
at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectOne(QuorumCnxManager.java:323)
at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectAll(QuorumCnxManager.java:356)
at org.apache.zookeeper.server.quorum.FastLeaderElection.lookForLeader(FastLeaderElection.java:603)

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