网上docker 安装kafka环境教程大多数会采用下面命令
docker run -d --name kafka -p 9092:9092 \
-e KAFKA_BROKER_ID=0 -e KAFKA_ZOOKEEPER_CONNECT=192.xxx.xxx.xxx:2181 \
-e KAFKA_ADVERTISED_LISTENERS=PLAINTEXT://192.xxx.xxx.xxx:9092 -e \
KAFKA_LISTENERS=PLAINTEXT://0.0.0.0:9092 -t bitnami/kafka:2.7.0
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–name=“容器新名字” 为容器指定一个名称；
-
-d: 后台运行容器并返回容器ID，也即启动守护式容器(后台运行)；
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-p: 指定端口映射，小写p
启动kafka容器时发现容器并没有正常启动，通过查看日志发现提示：
- 查看日志命令
docker logs kafka
- 日志错误提示
INFO ==> ** Starting Kafka setup **
15:04:41.47 ERROR ==> The KAFKA_CFG_LISTENERS environment variable does not configure a secure listener. Set the environment variable ALLOW_PLAINTEXT_LISTENER=yes to allow the container to be started with a plaintext listener. This is only recommended for development.
15:04:41.48 ERROR ==> The KAFKA_ZOOKEEPER_PROTOCOL environment variable does not configure a secure protocol. Set the environment variable ALLOW_PLAINTEXT_LISTENER=yes to allow the container to be started with a plaintext listener. This is only recommended for development.
这是因为在启动容器时没有指定环境变量ALLOW_PLAINTEXT_LISTENER 允许使用PLAINTEXT侦听器。
启动命令时加上指定环境变量
-e ALLOW_PLAINTEXT_LISTENER=yes
docker run -d --name kafka -p 9092:9092 \
-e KAFKA_BROKER_ID=0 -e KAFKA_ZOOKEEPER_CONNECT=192.xxx.xxx.xxx:2181 \
-e ALLOW_PLAINTEXT_LISTENER=yes \
-e KAFKA_ADVERTISED_LISTENERS=PLAINTEXT://192.xxx.xxx.xxx:9092 -e \
KAFKA_LISTENERS=PLAINTEXT://0.0.0.0:9092 -t bitnami/kafka:2.7.0
成功:
