我创建了一个Vagrant/Ansible操作手册来构建单节点Kafka VM。Kafka in a box:无法发送来自主机的邮件
的想法是原型的时候提供一些灵活性:如果我们想快速&脏卡夫卡消息队列我们可以简单git clone [my 'kafka in a box' repo]
,cd ..
和vagrant up
。
这是我到目前为止已经完成:
Vagrantfile:
VAGRANTFILE_API_VERSION = "2"
Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
config.vm.box = "hashicorp/precise64"
config.vm.network "forwarded_port", guest:9092, host: 9092
config.vm.provider "virtualbox" do |vb|
vb.customize ["modifyvm", :id, "--memory", "2048"]
end
config.vm.provision "ansible" do |ansible|
ansible.playbook = "kafkaPlaybook.yml"
end
end
...和Ansible kafkaPlaybook.yml
文件:
---
- hosts: all
user: vagrant
sudo: True
tasks:
- name: install linux packages
action: apt update_cache=yes pkg={{item}} state=installed
with_items:
- vim
- openjdk-7-jdk
- name: make /usr/local/kafka directory
shell: "mkdir /usr/local/kafka"
- name: download kafka (the link is from an apache mirror)
get_url: url=http://apache.spinellicreations.com/kafka/0.8.1.1/kafka-0.8.1.1-src.tgz dest=/usr/local/kafka/kafka-0.8.1.1-src.tgz mode=0440
- name: untar file
shell: "tar -xvf /usr/local/kafka/kafka-0.8.1.1-src.tgz -C /usr/local/kafka"
- name: build kafka with gradle
shell: "cd /usr/local/kafka/kafka-0.8.1.1-src && ./gradlew jar"
当我vagrant up
盒子被提供。我能够vagrant ssh
并在本地执行基本的生产者/消费者测试,例如,
cd /usr/local/kafka/kafka-0.8.1.1-src
bin/zookeeper-server-start.sh config/zookeeper.properties #start zookeeper
bin/kafka-server-start.sh config/server.properties #start kafka
bin/kafka-console-producer.sh --broker-list localhost:9092 --topic tests #start a producer
bin/kafka-console-consumer.sh --zookeeper localhost:2181 --topic test --from-beginning #start a consumer
当我在生产者窗口中输入消息时,它们出现在消费者窗口中。大。
我尝试使用卡夫卡Python包连接到卡夫卡从主机:
>>> from kafka import KafkaClient, SimpleProducer
>>> kafka = KafkaClient("127.0.0.1:9092", timeout=120)
>>> kafka.ensure_topic_exists('turkey')
No handlers could be found for logger "kafka"
>>> kafka.ensure_topic_exists('turkey')
>>> producer = SimpleProducer(kafka)
>>> producer.send_messages("turkey", "gobble gobble")
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/Users/awoolford/anaconda/lib/python2.7/site-packages/kafka/producer.py", line 261, in send_messages
return super(SimpleProducer, self).send_messages(topic, partition, *msg)
File "/Users/awoolford/anaconda/lib/python2.7/site-packages/kafka/producer.py", line 188, in send_messages
timeout=self.ack_timeout)
File "/Users/awoolford/anaconda/lib/python2.7/site-packages/kafka/client.py", line 312, in send_produce_request
resps = self._send_broker_aware_request(payloads, encoder, decoder)
File "/Users/awoolford/anaconda/lib/python2.7/site-packages/kafka/client.py", line 148, in _send_broker_aware_request
conn = self._get_conn(broker.host, broker.port)
File "/Users/awoolford/anaconda/lib/python2.7/site-packages/kafka/client.py", line 55, in _get_conn
timeout=self.timeout
File "/Users/awoolford/anaconda/lib/python2.7/site-packages/kafka/conn.py", line 60, in __init__
self.reinit()
File "/Users/awoolford/anaconda/lib/python2.7/site-packages/kafka/conn.py", line 195, in reinit
self._raise_connection_error()
File "/Users/awoolford/anaconda/lib/python2.7/site-packages/kafka/conn.py", line 75, in _raise_connection_error
raise ConnectionError("Kafka @ {0}:{1} went away".format(self.host, self.port))
kafka.common.ConnectionError: Kafka @ precise64:9092 went away
的kafka.ensure_topic_exists
有人呼吁两次。第一次运行时,它会返回一个警告,然后创建主题,所以我可以看到Python正在与端口9092上的Kafka进行通信。但是,我无法将消息发送到队列。
你能看到我做错了什么吗?