Kafka 无法在 ubuntu 实例上启动，getLocalHost(InetAddress) 返回 ip，并将"ip"附加到 ip 的开头

Question

在AWS上运行ubuntu。当我尝试启动Kafka时，我看到了这个异常：

[2018-07-22 06:18:44,467] ERROR [KafkaServer id=0] Fatal error during KafkaServer startup. Prepare to shutdown (kafka.server.KafkaServer)
java.net.UnknownHostException: ip-10-153-166-139: ip-10-153-166-139: Name or service not known
at java.net.InetAddress.getLocalHost(InetAddress.java:1505)
at kafka.server.KafkaServer$$anonfun$3.apply(KafkaServer.scala:390)
at kafka.server.KafkaServer$$anonfun$3.apply(KafkaServer.scala:388)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48)
at scala.collection.TraversableLike$class.map(TraversableLike.scala:234)
at scala.collection.AbstractTraversable.map(Traversable.scala:104)
at kafka.server.KafkaServer.createBrokerInfo(KafkaServer.scala:388)
at kafka.server.KafkaServer.startup(KafkaServer.scala:256)
at kafka.server.KafkaServerStartable.startup(KafkaServerStartable.scala:38)
at kafka.Kafka$.main(Kafka.scala:75)
at kafka.Kafka.main(Kafka.scala)
Caused by: java.net.UnknownHostException: ip-10-153-166-139: Name or service not known
at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928)
at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323)
at java.net.InetAddress.getLocalHost(InetAddress.java:1500)
... 13 more
[2018-07-22 06:18:44,469] INFO [KafkaServer id=0] shutting down (kafka.server.KafkaServer)

自从我开始使用这张图片以来，我就注意到了这一点：

ubuntu@ip-10-153-166-139:

为什么"ip"被附加到kafka服务器试图用来完全启动的实例ip上？是否有我可以更改的系统配置，以便getLocalHost只返回ip本身？

Answer 1

如上所述，答案在这里：

为什么我无法从外部连接到卡夫卡？

内部/kafka/config/server.properties添加：

host.name='the.box'的实际.ip.'