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Docker中怎样查看容器日志

Mesh
2022/06/04 00:39:39
实现
1、实时查看docker容器名为docker123的最新10行日志,如果有新的日志生成会实时刷新出来。可以用这个命令
docker logs -f --tail 10 kafka
其中kafka就是你的容器名
如果我们只是打印出来最新的10行日志,可以用下面的命令
docker logs --tail 10 kafka

2、这里在启动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:
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.

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。
启动命令时指定环境变量
-e ALLOW_PLAINTEXT_LISTENER=yes
完整启动命令
docker run -d --name kafka -p 9092:9092 -e KAFKA_BROKER_ID=0 -e KAFKA_ZOOKEEPER_CONNECT=119.167.159.203:2181 -e ALLOW_PLAINTEXT_LISTENER=yes -e KAFKA_ADVERTISED_LISTENERS=PLAINTEXT://119.167.159.203:9092 -e KAFKA_LISTENERS=PLAINTEXT://0.0.0.0:9092 -t bitnami/kafka