Could not create connection to server xxxxxxx - NSQConsumer.createConnection

[Bwjh]

Producer works fine, but consumer can not start . Stacktrace may like this:

com.github.brainlag.nsq.exceptions.NoConnectionsException: Could not connect to server
at com.github.brainlag.nsq.Connection.(Connection.java:62) ~[nsq-client-1.0.0.RC4.jar:?]
at com.github.brainlag.nsq.NSQConsumer.createConnection(NSQConsumer.java:80) ~[nsq-client-1.0.0.RC4.jar:?]
at com.github.brainlag.nsq.NSQConsumer.connect(NSQConsumer.java:210) ~[nsq-client-1.0.0.RC4.jar:?]
at com.github.brainlag.nsq.NSQConsumer.lambda$start$0(NSQConsumer.java:73) ~[nsq-client-1.0.0.RC4.jar:?]
at java.util.concurrent.Executors$RunnableAdapter.call$$$capture(Executors.java:511) [?:1.8.0_144]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java) [?:1.8.0_144]
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) [?:1.8.0_144]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) [?:1.8.0_144]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) [?:1.8.0_144]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_144]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_144]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_144]
Caused by: java.nio.channels.UnresolvedAddressException
at sun.nio.ch.Net.checkAddress(Net.java:101) ~[?:1.8.0_144]
at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:622) ~[?:1.8.0_144]
at io.netty.channel.socket.nio.NioSocketChannel.doConnect(NioSocketChannel.java:208) ~[netty-all-4.0.39.Final.jar:4.0.39.Final]
at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.connect(AbstractNioChannel.java:203) ~[netty-all-4.0.39.Final.jar:4.0.39.Final]
at io.netty.channel.DefaultChannelPipeline$HeadContext.connect(DefaultChannelPipeline.java:1226) ~[netty-all-4.0.39.Final.jar:4.0.39.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeConnect(AbstractChannelHandlerContext.java:549) ~[netty-all-4.0.39.Final.jar:4.0.39.Final]
at io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:534) ~[netty-all-4.0.39.Final.jar:4.0.39.Final]
at io.netty.channel.ChannelOutboundHandlerAdapter.connect(ChannelOutboundHandlerAdapter.java:47) ~[netty-all-4.0.39.Final.jar:4.0.39.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeConnect(AbstractChannelHandlerContext.java:549) ~[netty-all-4.0.39.Final.jar:4.0.39.Final]
at io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:534) ~[netty-all-4.0.39.Final.jar:4.0.39.Final]
at io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:516) ~[netty-all-4.0.39.Final.jar:4.0.39.Final]
at io.netty.channel.DefaultChannelPipeline.connect(DefaultChannelPipeline.java:970) ~[netty-all-4.0.39.Final.jar:4.0.39.Final]
at io.netty.channel.AbstractChannel.connect(AbstractChannel.java:215) ~[netty-all-4.0.39.Final.jar:4.0.39.Final]
at io.netty.bootstrap.Bootstrap$2.run(Bootstrap.java:166) ~[netty-all-4.0.39.Final.jar:4.0.39.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:408) ~[netty-all-4.0.39.Final.jar:4.0.39.Final]
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:402) ~[netty-all-4.0.39.Final.jar:4.0.39.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:140) ~[netty-all-4.0.39.Final.jar:4.0.39.Final]
at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144) ~[netty-all-4.0.39.Final.jar:4.0.39.Final]
... 1 more

How can I fix this?

[jayantjain93]

As you can see the cause of the Exception is:
Caused by: java.nio.channels.UnresolvedAddressException
Can you try to make sure if you can resolve the address for your hostname where the nsqd is hosted from your environment.
Try running the following command for linux to know if your environment is able to resolve the hostname.
$ dig +short hostname