我尝试使用与kafka服务器不同的计算机上运行的单个zookeeper实例来设置kafka群集。
我能够从同一台机器连接到我的ZooKeeper实例（通过在该机器上创建kafka服务器），但是我无法从本地机器连接其他kafka服务器网络
所有服务器都在私有云中运行，默认情况下所有端口都处于打开状态。我能ping和telnet到机器，但我似乎无法访问ZooKeeper实例：
# On the ZooKeeper machine
> telnet 10.155.208.82 2181
Trying 10.155.208.82...
Connected to 10.155.208.82.
# On any other machine
> telnet 10.155.208.82 22
Trying 10.155.208.82...
Connected to 10.155.208.82.
> telnet 10.155.208.82 2181
Trying 10.155.208.82...
# Nothing happens ...
超过连接到ZooKeeper的超时后，Kafka错误输出：
[2015-12-28 18:52:21,632] INFO Initiating client connection, connectString=10.155.208.82:2181 sessionTimeout=6000 watcher=org.I0Itec.zkclient.ZkClient@43ee72e6 (org.apache.zookeeper.ZooKeeper)
[2015-12-28 18:52:21,645] INFO Opening socket connection to server 10.155.208.82/10.155.208.82:2181. Will not attempt to authenticate using SASL (unknown error) (org.apache.zookeeper.ClientCnxn)
[2015-12-28 18:52:21,650] INFO Waiting for keeper state SyncConnected (org.I0Itec.zkclient.ZkClient)
[2015-12-28 18:52:27,651] INFO Terminate ZkClient event thread. (org.I0Itec.zkclient.ZkEventThread)
[2015-12-28 18:52:27,758] INFO Session: 0x0 closed (org.apache.zookeeper.ZooKeeper)
[2015-12-28 18:52:27,759] INFO EventThread shut down (org.apache.zookeeper.ClientCnxn)
[2015-12-28 18:52:27,760] FATAL Fatal error during KafkaServer startup. Prepare to shutdown (kafka.server.KafkaServer)
org.I0Itec.zkclient.exception.ZkTimeoutException: Unable to connect to zookeeper server within timeout: 6000
at org.I0Itec.zkclient.ZkClient.connect(ZkClient.java:1223)
at org.I0Itec.zkclient.ZkClient.<init>(ZkClient.java:155)
at org.I0Itec.zkclient.ZkClient.<init>(ZkClient.java:129)
at kafka.utils.ZkUtils$.createZkClientAndConnection(ZkUtils.scala:89)
at kafka.utils.ZkUtils$.apply(ZkUtils.scala:71)
at kafka.server.KafkaServer.initZk(KafkaServer.scala:278)
at kafka.server.KafkaServer.startup(KafkaServer.scala:168)
at kafka.server.KafkaServerStartable.startup(KafkaServerStartable.scala:37)
at kafka.Kafka$.main(Kafka.scala:67)
at kafka.Kafka.main(Kafka.scala)
[2015-12-28 18:52:27,764] INFO shutting down (kafka.server.KafkaServer)
[2015-12-28 18:52:27,770] INFO shut down completed (kafka.server.KafkaServer)
[2015-12-28 18:52:27,771] FATAL Fatal error during KafkaServerStartable startup. Prepare to shutdown (kafka.server.KafkaServerStartable)
我做错了什么？如果有帮助，虚拟机在私有云中没有为其分配任何主机名。