Vagrant: Docker provider with Docker for Mac fails to ssh to 172.17.0.0/24 network

[geogdog]

Vagrant version

Vagrant 1.8.5

Host operating system

OS X El Capitan 10.11.6

Guest operating system

CentOS 6

Vagrantfile

Vagrant.configure("2") do |config|
  ENV['VAGRANT_DEFAULT_PROVIDER'] = 'docker'
  config.vm.provider "docker" do |d|
    d.image = "monkeyswithbuttons/docker-vagrant-centos6"
    d.has_ssh = true
    d.remains_running = true
    d.force_host_vm = false
  end
  (1..2).each do |machine_id|
      machine_name = "machine-%02d" % machine_id
      config.vm.define machine_name do |machine|
          machine.vm.hostname = machine_name
      end
  end
end

Debug output

https://gist.github.com/geogdog/419a1cac137dff1abbb93819a311cfdd

Expected behavior

Vagrant makes an ssh connection and completes an _up_

Actual behavior

Vagrant hangs trying to make a connection to the 172.17.0.0/24 address but the routing fails. Creating a manual ssh connection to the locally forwarded port works fine: ssh -l vagrant 127.0.0.1:2222.

Suggestion

Create an option to force the use of the locally forwarded ssh ports?

Steps to reproduce

1. Install docker for mac
2. vagrant up
   

   References

None

[iondulgheru]

I experienced the same issue ( with Mac OSX El Capitan, vagrant 1.8.5, Docker for Mac version 1.12.0 (build: 10871) )

[tko]

Looking at the output of inspect I see one place where the host/port is correct:

            "Ports": {
                "22/tcp": [
                    {
                        "HostIp": "127.0.0.1",
                        "HostPort": "2222"
                    }
                ]
            },

and quickly checking using this

         network = driver.inspect_container(@machine.id)['NetworkSettings']
         sshport = network['Ports']['22/tcp'][0]
         return {
             host: sshport['HostIp'],
             port: sshport['HostPort'],
         }

to replace the existing use of IPAddress and @machine.config.ssh.guest_port makes vagrant ssh work for me.

Mind you I've no idea how brittle that is, works with a sample size of one with a trivial Vagrantfile.

[geogdog]

It would be great to wrap this if a conditional for the docker provider configuration:

if @machine.provider_config.force_local_ssh
   ...

[tko]

Assuming the current code is working with boot2docker, if there's a conditional could it be simply based on force_host_vm? (Which should probably have a default of false these days I guess?)

(Rather than requiring most everyone to set the unbreak_me = :pretty_please option I'd hope there's a way to make vagrant to do the right thing _by default_ and perhaps provide a i_know_what_im_doing = true options for the more advanced network configurations.)

[madAndroid]

We're experiencing this as well, would be great if there was a flag to make sure it uses localhost to connect.

[thanandorn]

This workaround works fine for me.

Vagrant.configure("2") do |config|
  ENV['VAGRANT_DEFAULT_PROVIDER'] = 'docker'
  config.vm.provider "docker" do |d|
    d.image = "monkeyswithbuttons/docker-vagrant-centos6"
    d.has_ssh = true
    d.remains_running = true
    d.force_host_vm = false
  end

  (1..2).each do |machine_id|
      machine_name = "machine-%02d" % machine_id
      config.vm.define machine_name do |machine|
          machine.vm.hostname = machine_name
          machine.vm.network "forwarded_port", guest: 22, host: 2200 + machine_id, id: 'ssh'
          machine.ssh.host = "localhost"
          machine.ssh.port = 2200 + machine_id
      end
  end
end

[geogdog]

As much as we all love a good work around, it doesn't work for me as I have multiple vagrant projects running at once so my ports don't necessarily start at 2200.

The configuration solution I really think is the most viable here.

[thanandorn]

@geogdog Agree, on configuration solution. The workaround was just an idea and it might be useful.

[wangjunwei87]

I experienced the same issue, and @tko 's workaround works fine for me .

[Dnefedkin]

@pstengel , #7840 has not merged to master so far, had to apply manually.

[andrewmackrodt]

Until #7840 or similar is merged I'm using the following (replace the asterisk with the machine name in the case you're running multiple machines in the same Vagrantfile):

config.vm.provider "docker" do |d, override|
  d.force_host_vm = false
  d.has_ssh = true
  override.ssh.host = "127.0.0.1"
  override.ssh.port = `head -n1 .vagrant/machines/*/docker/id | xargs docker inspect | grep -n3 '22/tcp' | grep 'HostPort' | head -n1 | perl -pe 's/.+?"([0-9]+)".*/\\1/'`.chop
end

[queeno]

I am really keen on this issue to be solved and PR #7840 to be merged.
Should this have been already fixed in 1.8?

[chrisroberts]

Fixed via #7840

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