Can't access kafka by server IP address

[paperage]

I'm new to kafka and when I use kafka-python to access kafka by

client = KafkaClient("localhost:9092") or client = KafkaClient("127.0.0.1:9092").

Both of the 2 ways can access kafka, but when I use the ip of the server like

client = KafkaClient("10.255.208.34:9092") on the server and other machines

they can not access kafka. Why can i use the ip address?

Thanks!

now i can access the server i setup for test, but i still can't access the kafka cluster

No handlers could be found for logger "kafka"
Traceback (most recent call last):
File "cons.py", line 5, in
kafka = KafkaClient("10.4.32.221:9092")
File "/usr/local/lib/python2.7/site-packages/kafka_python-0.9.1-py2.7.egg/kafka/client.py", line 41, in init
self.load_metadata_for_topics() # bootstrap with all metadata
File "/usr/local/lib/python2.7/site-packages/kafka_python-0.9.1-py2.7.egg/kafka/client.py", line 243, in load_metadata_for_topics
response = self._send_broker_unaware_request(request_id, request)
File "/usr/local/lib/python2.7/site-packages/kafka_python-0.9.1-py2.7.egg/kafka/client.py", line 101, in _send_broker_unaware_request
raise KafkaUnavailableError("All servers failed to process request")
kafka.common.KafkaUnavailableError: All servers failed to process request

[dpkp]

Sounds like your server is bound to localhost. Try leaving host.name empty in server.properties.

[paperage]

Thanks a lot!
host.name in server.properties was empty

And i still can't access the kafka cluster with the same error but can access kafka on my test machine in the same way except changing the IP address and topic name only ...
:(

[paperage]

I use kafka's kafka-console-consumer.sh to access the cluster by

bin/kafka-console-consumer.sh --zookeeper 10.4.32.221:2181 --topic test --from-beginning

and the errors :

[2014-05-13 15:12:33,683] ERROR Error processing message, stopping consumer: (kafka.consumer.ConsoleConsumer$)
kafka.common.ConsumerRebalanceFailedException: console-consumer-60631_h253017-1399965145213-a21782c1 can't rebalance after 4 retries
at kafka.consumer.ZookeeperConsumerConnector$ZKRebalancerListener.syncedRebalance(ZookeeperConsumerConnector.scala:432)
at kafka.consumer.ZookeeperConsumerConnector.kafka$consumer$ZookeeperConsumerConnector$$reinitializeConsumer(ZookeeperConsumerConnector.scala:722)
at kafka.consumer.ZookeeperConsumerConnector$WildcardStreamsHandler.(ZookeeperConsumerConnector.scala:756)
at kafka.consumer.ZookeeperConsumerConnector.createMessageStreamsByFilter(ZookeeperConsumerConnector.scala:145)
at kafka.consumer.ConsoleConsumer$.main(ConsoleConsumer.scala:196)
at kafka.consumer.ConsoleConsumer.main(ConsoleConsumer.scala)
Consumed 0 messages

What reason can cause "can't rebalance after 4 retries"?
Thanks!! :)

[dpkp]

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