boot2docker init fails with VBoxManage synthcpu args on VirtualBox 5.0

[nickfan]

boot2docker init fails with VBoxManage synthcpu args on VirtualBox 5.0

[trinitronx]

For those that just need docker working...

The current workaround that works for me is to not use boot2docker and instead use the latest unreleased HEAD for docker-machine via Homebrew:

$ brew update
$ brew install --HEAD docker-machine
$ docker-machine  -v
docker-machine version 0.4.0-dev (HEAD)
$ docker-machine create -d virtualbox boot2docker
$ eval $( docker-machine env boot2docker )
$ docker version
Client version: 1.7.0
Client API version: 1.19
Go version (client): go1.4.2
Git commit (client): 0baf609
OS/Arch (client): darwin/amd64
Server version: 1.7.0
Server API version: 1.19
Go version (server): go1.4.2
Git commit (server): 0baf609
OS/Arch (server): linux/amd64

[dpaola2]

Also experiencing this issue.

[tianon]

See also boot2docker/boot2docker#979 for more discussion of the issue and #373 for discussion of a concrete fix.

[tianon]

Also of note is that docker/machine#1496 already fixed this in docker-machine, and if you haven't given docker-machine a try yet, you probably want to since it'll be the de-facto way to use boot2docker in the near future.

[nickfan]

$ brew update
$ brew install --HEAD docker-machine
$ docker-machine  -v
docker-machine version 0.3.0 (HEAD)

now we got docker-machine 0.3.0 from brew today

and run

docker-machine --debug create -d virtualbox boot2docker

still got error:

VBoxManage: error: Unknown option: --synthcpu

[iammichiel]

The issue was corrected in 0.3.1-RC1. You will have to update again :

$ brew update
$ brew install --HEAD docker-machine
$ docker-machine  -v
docker-machine version 0.3.1 (HEAD)