使用devstack安装docker

Question

I am trying to install devstack and docker ( http://devstack.org/guides/single-machine.html ) onto a VM containing Ubuntu 13.10 Server. devstack contains a docker installer script in tools/docker/install_docker.sh which it is recommended to run first before running the stack.sh installer script for devstack. I have patched the docker install script according to the bug report https://bugs.launchpad.net/devstack/+bug/1237581 however docker still reports a problem:

socat[NNNN] E connect(3, AF=1 "/var/run/docker.sock", 22): Connection refused

Does anyone know a fix for this problem? Thanks, David

Answer 1

If you get error messages regarding /var/run/docker.sock then either the docker daemon/service is not started or your user (devstack user) has no permissions.

Start docker:

service docker restart

Add your user (devstack user) to the docker group. Try to enumerate containers:

docker ps

If that still does not fix the problem then you might want to change the permission of /var/run/docker.sock directly:

sudo chown vagrant:vagrant /var/run/docker.sock

Answer 2

Check your kernel ( uname -a ) and make sure it is 3.8 or latest. Also, make sure you are on a 64bit Ubuntu ( X86_64 distribution ). The point is that the Docker daemon might not be starting (fails) because it is not supported on a 32 bit distribution.