org.elasticsearch.transport.netty - [Colleen Wing] exception caught on transport layer [[id: 0x3e84d

org.elasticsearch.transport.netty - [Apache Kid] exception caught on transport layer [[id: 0x6844bf38]], closing connection
java.net.NoRouteToHostException: No route to host
	at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
	at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:739)
	at org.jboss.netty.channel.socket.nio.NioClientBoss.connect(NioClientBoss.java:152)
	at org.jboss.netty.channel.socket.nio.NioClientBoss.processSelectedKeys(NioClientBoss.java:105)
	at org.jboss.netty.channel.socket.nio.NioClientBoss.process(NioClientBoss.java:79)
	at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:337)
	at org.jboss.netty.channel.socket.nio.NioClientBoss.run(NioClientBoss.java:42)
	at org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)
	at org.jboss.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)

报错时因为 链接elasticsearch服务器 连不上报的错