Help: NoBrokersAvailable

hi in kafka_2.11-0.10.1.0 version use kafka-python to connect error

use bin/kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic test --from-beginning is correct my python code: from kafka import KafkaConsumer consumer = KafkaConsumer('test',bootstrap_servers=['localhost:9092']) for message in consumer: print ("%s:%d:%d: key=%s value=%s" % (message.topic, message.partition, message.offset, message.key, message.value)) error message: Traceback (most recent call last): File “pkafka.py”, line 5, in <module> bootstrap_servers=[‘localhost:9092’]) File “/usr/lib/python2.7/site-packages/kafka_python-1.3.2.dev0-py2.7.egg/kafka/consumer/group.py”, line 287, in init self._client = KafkaClient(metrics=self._metrics, **self.config) File “/usr/lib/python2.7/site-packages/kafka_python-1.3.2.dev0-py2.7.egg/kafka/client_async.py”, line 204, in init self.config[‘api_version’] = self.check_version(timeout=check_timeout) File “/usr/lib/python2.7/site-packages/kafka_python-1.3.2.dev0-py2.7.egg/kafka/client_async.py”, line 813, in check_version raise Errors.NoBrokersAvailable() kafka.errors.NoBrokersAvailable: NoBrokersAvailable

[typehorror]

In case someone faces the exact same issue as I did, I believe my kafka config was the issue. I’ve added an explicit listener line to my config config/server.properties and it resolved the issue.

############################# Socket Server Settings #############################

# The address the socket server listens on. It will get the value returned from
# java.net.InetAddress.getCanonicalHostName() if not configured.
#   FORMAT:
#     listeners = listener_name://host_name:port
#   EXAMPLE:
#     listeners = PLAINTEXT://your.host.name:9092
listeners=PLAINTEXT://localhost:9092

[dpkp]

Hi all – NoBrokersAvailable is raised in this scenario if bootstrapping metadata failed. Bootstrapping relies exclusively on bootstrap_servers . If you are seeing this error it is because kafka-python was unable to connect to any of the brokers you configured as bootstrap_servers.

If you want to find out more about what is happening under the covers, enable debug logging:

import logging
logging.basicConfig(level=logging.DEBUG)

In addition there will be some additional connection logging in the next release and that should make it even easier to diagnose networking problems like this.