docker port 报错

Question

使用 “docker port 容器id 容器port” 映射容器的端口时，系统报错如下：

*[root@DockerServer ~]# docker port e7d817698b6f 80
2014/04/06 16:08:07 Error: No public port '80' published for e7d817698b6f

这是什么原因，大家有知道的吗？

Answer 1

Is the container port not EXPOSE beforehand?

Answer 2

Expose the port first.

Answer 3

The permissions are not enough. sudo docker port e7d817698b6f 80. Test or change to another port number (>1024)

Answer 4

1. Specify the port to EXPOSE when creating.
2. Specify when startingPublishAllPort = true