Since I updated to Vertx 3.5.0 (java), I receive a lot of exceptions like the one below when the cluster is starting up, or something happens in it (e.g. a member has left or is joining) :
Note that I do not have the problem on Windows 10, only in my UAT environment on AWS (Amazon Linux).
I doubt it's a security group issue is it was working before I upgraded to 3.5.0...
I checked the local ports opened for listening and that one is not (45475).
io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: localhost/
127.0.0.1:45475 at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) ~[na:1.8.0_151]
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717) ~[na:1.8.0_151]
at io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:353) ~[netty-transport-4.1.15.Final.jar!/:4.1.15.Final]
at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:340) ~[netty-transport-4.1.15.Final.jar!/:4.1.15.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:633) ~[netty-transport-4.1.15.Final.jar!/:4.1.15.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:580) ~[netty-transport-4.1.15.Final.jar!/:4.1.15.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:497) ~[netty-transport-4.1.15.Final.jar!/:4.1.15.Final]
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:459) ~[netty-transport-4.1.15.Final.jar!/:4.1.15.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) ~[netty-common-4.1.15.Final.jar!/:4.1.15.Final]
at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_151]
Caused by: java.net.ConnectException: Connection refused
... 10 common frames omitted