Python 无法通过Docker连接到单节点Kafka服务器
我试图通过Docker连接到单节点Kafka服务器,但出现以下错误:Python 无法通过Docker连接到单节点Kafka服务器,python,docker,apache-kafka,apache-zookeeper,confluent-schema-registry,Python,Docker,Apache Kafka,Apache Zookeeper,Confluent Schema Registry,我试图通过Docker连接到单节点Kafka服务器,但出现以下错误: %3|1529395526.480|FAIL|rdkafka#producer-1| [thrd:localhost:9092/bootstrap]: localhost:9092/bootstrap: Connect to ipv4#127.0.0.1:9092 failed: Connection refused %3|1529395526.480|ERROR|rdkafka#producer-1| [thrd:local
%3|1529395526.480|FAIL|rdkafka#producer-1| [thrd:localhost:9092/bootstrap]: localhost:9092/bootstrap: Connect to ipv4#127.0.0.1:9092 failed: Connection refused
%3|1529395526.480|ERROR|rdkafka#producer-1| [thrd:localhost:9092/bootstrap]: localhost:9092/bootstrap: Connect to ipv4#127.0.0.1:9092 failed: Connection refused
%3|1529395526.480|ERROR|rdkafka#producer-1| [thrd:localhost:9092/bootstrap]: 1/1 brokers are down
docker-compose.yml文件内容如下:
version: '2'
services:
zookeeper:
image: confluentinc/cp-zookeeper:latest
network_mode: host
environment:
ZOOKEEPER_CLIENT_PORT: 2181
ZOOKEEPER_TICK_TIME: 2000
extra_hosts:
- "moby:127.0.0.1"
kafka:
image: confluentinc/cp-kafka:latest
network_mode: host
depends_on:
- zookeeper
environment:
KAFKA_BROKER_ID: 1
KAFKA_ZOOKEEPER_CONNECT: localhost:2181
KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://localhost:9092
KAFKA_ADVERTISED_HOSTNAME: kafka
KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
extra_hosts:
- "moby:127.0.0.1"
schema_registry:
image: confluentinc/cp-schema-registry
hostname: schema_registry
depends_on:
- zookeeper
- kafka
ports:
- "8081:8081"
environment:
SCHEMA_REGISTRY_HOST_NAME: schema_registry
SCHEMA_REGISTRY_KAFKASTORE_CONNECTION_URL: '127.0.0.1:2181'
Dockerfile的内容如下:
FROM python:2
WORKDIR /kafkaproducerapp
COPY requirements.txt ./
RUN pip install --no-cache-dir -r requirements.txt
COPY . .
CMD [ "python", "./BackOffice_Producer.py" ]
我做错了什么?你需要这个:
KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka:29092,PLAINTEXT_HOST://localhost:9092
否则,Kafka代理将告诉任何正在连接的人,它可以在localhost:9092
上找到,这在其他容器中是不起作用的。从其他容器中,使用kafka:29092
作为代理主机和端口,以及使用zookeeper:2181
作为zookeeper
从本地主机,您可以访问9092上的代理(假设您公开了端口)
查看完整示例您是否尝试将端口9092添加到kafka?您没有像对架构注册表那样将容器的端口映射到主机,此外,对于主机,您可以将其添加到容器的主机文件中,这样它就可以代替
localhost
查看添加的端口,但我仍然收到相同的错误。您从何处获得此编写文件?您不应该使用localhost或127.0.0.1将一个容器连接到其他容器。。。基本上,卡夫卡和登记处都无法联系到Zookeeper