env output is not compatible with windows

[ahmetb]

C:\Users\ahmetb>docker-machine env docker-vb
export DOCKER_TLS_VERIFY=yes
export DOCKER_CERT_PATH=C:\Users\ahmetb\.docker\machine\machines\docker-vb
export DOCKER_HOST=tcp://192.168.99.100:2376

export wouldn't work on windows cmd.exe/powershell. We must generate the correct output for cmd/ps and must also keep in mind that user might be running on mingw(msys)/cygwin and in that case this output is already valid (except the cert path though). I may fix this some time, not top priority.

[ehazlett]

See #733 (comment) (we currently recommend to install msysgit which has bash).

[sthulb]

I think in the future, we should support at least powershell

[ehazlett]

I agree -- but I defer to @ahmetalpbalkan as he has better domain knowledge than I do.

[StefanScherer]

I've played with docker-machine.exe on Windows last week. I additionally downloaded docker.exe CLI that is also pre-built on dockerproject.com.

Assuming Chocolatey we can install VirtualBox and curl with two little steps. I have made all these steps in a good old cmd.exe shell:

λ cinst virtualbox
λ cinst curl

Then download docker-machine.exe and docker.exe

λ curl -L -o docker-machine.exe https://github.com/docker/machine/releases/download/v0.1.0/docker-machine_windows-amd64.exe
λ curl -L -o docker.exe https://master.dockerproject.com/windows/amd64/docker.exe

Now create a VirtualBox dev machine:

λ docker-machine create -d virtualbox dev

And here comes my favorite for cmd.exe shells: Translate the unix'ish environments printed by docker-machine and set it as environment variables in a plain Windows shell:

λ for /f "tokens=2" %i in ('docker-machine env dev') do set %i

We are almost up and running. But the docker.exe (nightly build ?) already uses protocol version 1.18, but talking to a docker host we need version 1.17 for docker 1.5.0 hosts.

This could be done with a little trick:

λ sed -ibak -b docker.exe -e 's/1.18/1.17/g'

And now you can do something like

λ docker logs
λ docker images

Maybe this helps.

[ehazlett]

@StefanScherer thanks for the info! i hope to have a "recommended" guide soon so you don't have to jump through all of those hoops!

[tknerr]

I'm hopefully waiting for docker 1.6.0 release to support this out of the box.

@StefanScherer awesome info! I got stuck with the different protocol versions, using sed to fix that is nice ;-)

Is it usable like that or do you actually run into protocol incompatibilies quite early for the basic commands?

[ahmetb]

@tknerr @StefanScherer about the overriding API version, you can +1 the proposal here: moby/moby#11486

[StefanScherer]

@ahmetalpbalkan I'll have a look at your proposal.
I've tested the output of the current docker-machine.exe v0.2.0-rc3 and found some other issues:

C:\Users\vagrant>for /f "tokens=2" %i in ('docker-machine env dev') do set %i

C:\Users\vagrant>set DOCKER_TLS_VERIFY=1

C:\Users\vagrant>set DOCKER_CERT_PATH="C:\\Users\\vagrant\\.docker\\machine\\machines\\dev"

C:\Users\vagrant>set DOCKER_HOST=tcp://192.168.99.100:2376

C:\Users\vagrant>set Run
Environment variable Run not defined

C:\Users\vagrant>docker-machine env dev
export DOCKER_TLS_VERIFY=1
export DOCKER_CERT_PATH="C:\\Users\\vagrant\\.docker\\machine\\machines\\dev"
export DOCKER_HOST=tcp://192.168.99.100:2376

# Run this command to configure your shell: eval $(docker-machine env dev)


C:\Users\vagrant>docker info
FATA[0000] Couldn't read ca cert "C:\Users\vagrant\.docker\machine\machines\dev"\ca.pem:
open "C:\Users\vagrant\.docker\machine\machines\dev"\ca.pem: The filename, directory name,
or volume label syntax is incorrect.

1. The "bash" comment # Run this command ... has to be ignored on Windows.
2. The quotes in the envionment variable seems to make trouble.

After correcting the DOCKER_CERT_PATH environment the docker client can find the cert:

C:\Users\vagrant>set DOCKER_CERT_PATH=C:\Users\vagrant\.docker\machine\machines\dev

C:\Users\vagrant>docker info
FATA[0000] Error response from daemon: client and server don't have same version (client : 1.19, server: 1.17)

So IMHO the docker-machine.exe should be more polite on windows and make it easier to set the environments.

[ahmetb]

@StefanScherer sorry I didn't get your point.

 set DOCKER_CERT_PATH="C:\\Users\\vagrant\\.docker\\machine\\machines\\dev"

this is not a valid usage for cmd.exe. you should not use backslashes or double quotes.

I recently fixed the same issue b2d-cli for windows: boot2docker/boot2docker-cli#356 I'm hoping to port that here soon.

[StefanScherer]

@ahmetalpbalkan I've just retried my for loop from three weeks ago. Parsing the current output of docker-machine.exe results in the two errors above. So it gets more complicated for Windows users to use these envs.

I know the output of docker-machine is for unix shells at the moment. It would be fine if docker-machine outputs the correct values without the double quotes and without quotes.

[ahmetb]

@StefanScherer umm, yes this issue is about that precisely :)

[StefanScherer]

@ahmetalpbalkan your PR in boot2docker-cli looks promising!

[ehazlett]

@StefanScherer this is a goal for 0.3.0 -- better windows experience. we want to be able to support cmd.exe / powershell out of the box.