Can't visit `http://172.17.0.2:5000` after sta

Question

On a mac system, I start the register following the deploy document:

docker run -d -p 5000:5000 --restart=always --name registry registry:2

And its ip is "IPAddress": "172.17.0.2", which is from the command docker inspect <cid>

But I can't telnet its port:

$ telnet 172.17.0.2 5000
Trying 172.17.0.2...
telnet: connect to address 172.17.0.2: Can't assign requested address
telnet: Unable to connect to remote host

Or

$ curl http://172.17.0.2:5000
curl: (7) Couldn't connect to server

I ssh to the container to check it:

$ docker exec -it cda bash
root@cda4c64efd06:/# netstat -an
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State
tcp6       0      0 :::5000                 :::*                    LISTEN
Active UNIX domain sockets (servers and established)
Proto RefCnt Flags       Type       State         I-Node   Path
root@cda4c64efd06:/# curl -I http://localhost:5000
HTTP/1.1 200 OK
Cache-Control: no-cache
Date: Fri, 11 Dec 2015 07:34:17 GMT
Content-Type: text/plain; charset=utf-8

root@cda4c64efd06:/#

Seems like it's binding tcp6 not normally tcp.

Where is wrong?

Answer 1

If you are using docker-machine, see "Port forwarding in docker-machine?"

• either port forward the 5000 port on the VirtualBox level (meaning localhost:5000 will work)

  VBoxManage controlvm "boot2docker-vm" natpf1 "tcp-port5000,tcp,,5000,,5000";
  

• or use the ip returned by $(docker-machine ip <yourMachine>)