Port conflict when try to control multiple HEXAs

1348686364 2018-03-09 02:21:57 UTC #1

We tried to use a computer to control multiple HEXAs at the same time to complete a consistent action. After connecting two HEXAs, we started two terminals choose HEXAs and mind run, one after another. At this time, I found a port conflict.

The error is as follows:

docker: Error response from daemon: driver failed programming external connectivity on endpoint elastic_leakey (d74d73e144c7eab34748217d35b59cf982029ba3115ae731610dac939a80a627): Bind for 0.0.0.0:8888 failed: port is already allocated.
exit status 125

My system is Ubuntu 14,05 trusty.

Mingzhao.Xu 2018-03-09 03:15:34 UTC #2

MIND-CLI is not supported to run several instances at the same time.

By default, port 8888 is using for serve mpk(skill installation package). It needs to be bind when starting docker container. Port 7597, 7590 also need to be used.

However, if you do want to run several mind-cli instances on one PC, you could try to customize MIND-CLI yourself since it is open-sourced.

These three ports could be easily modified in file main.go. You could try to modify the code and recompile MIND-CLI to make these ports configurable by command line arguments so that you can run multiple instances of mind on different ports. e.g. one mind with ports 8888, 7597, 7590, one with ports 8889, 7598, 7591, etc.

github.com

vincross/mind-sdk/blob/master/cli/main.go#L18


	"path/filepath"
	"runtime"


	"github.com/spf13/cobra"
)


func NewDefaultMindCliConfig() *mindcli.MindCliConfig {
	return &mindcli.MindCliConfig{
		Image:             "vincross/mindcli:latest",
		ContainerSkillDir: "/go/src/skill",
		ServeMPKPort:      8888,
		ServeRemotePort:   7597,
	}
}


func NewDefaultRobotScannerConfig() *mindcli.RobotScannerConfig {
	return &mindcli.RobotScannerConfig{
		Message: "VCSCAN",
		Port:    7590,
	}
}

PS: port 7590 is fixed port for feature mind scan, if you change this port, mind scan is not able to work, please use mind run --ip instead.

1282643788 2018-03-12 12:18:21 UTC #3

how to control multiple HEXAs at the same time? if you solve it,how to do?

Mingzhao.Xu 2018-03-13 09:00:39 UTC #4

It is not able to run several instances of MIND-CLI on one PC at the same time. If you really want to do this you could try to modify the mindsdk open-sourced project to meet your customized requirements.

1348686364 2018-04-02 19:44:33 UTC #5

I’m so sorry to reply to you so late since there is some other urgent works recently. As the Mingzhao.Xu said, it’s not allowed for running several instances at same time. Thus I write a new mindcli for controlling multiple HEXAs, which is open-sorceed. You can click here. But there is still some bugs, you can:

Clone the demo from there and change its name as go\src\mind1 or go\src\mind2 .etc.
Open the file main.go, find ServeMPKPort: 8888 and ServeRemotePort: 7597 in line 18, change these code to ServeMPKPort: 8889 and ServeRemotePort: 7598(.etc)
Compile this dir to an executable file, command as follow :
$ cd $GOPATH/src/mind-sdk
$ go build

1348686364 2018-04-02 19:44:35 UTC #6

$ mv mind1 /usr/local/bin

Run different or same skills in mind and mind1 respectively：
$ mind run --ip
$ mind1 run --ip
Then you can send strings to different robot in localhost:7597 and localhost:7598.

And welcome to give me some suggest about my mindcli for group run

1348686364 2018-04-02 19:44:38 UTC #7

Thanks for your helping , I’m so happy that I can learn so many things with your suggest. I learned your open-sorced code, write and push my first code in github basis on the inspired. I am a novice for both robots and go, it’s a pretty sense of accomplishment.

Mingzhao.Xu 2018-04-03 02:40:30 UTC #8

Hi @1348686364, your solution looks working well! I’m really glad that the suggestions are useful for you.
I see your GitHub repo, it’s not simple like what you posted on this topic, right? you have done many cool things to make the CLI easy to use.
One thing that I think it could be improved is that it would be better to take care of your git commit message.

Thanks for your feedback and hope you have fun with HEXA!

1348686364 2018-04-03 19:54:54 UTC #9

Aha! Thanks for your suggestion. I will learn to write git commit message and make it better .

Best regards.