This is a simple Vagrant setup for devstack based on fedora.
Make sure you have a current version of vagrant installed. In case of Linux make sure you have the vagrant-libvirt provider installed as well. For fedora 22 there is a nice article here:
http://fedoramagazine.org/running-vagrant-fedora-22/
Especially make sure, NFS-based shared folders are working as explained here:
http://nts.strzibny.name/vagrant-nfs-exports-on-fedora-21/
It's very simple:
$ vagrant up
After a while (around 10 minutes) you have an openstack runnig, and you can access the web-interface at http://localhost:8080/
With vagrant ssh you can log in to the VM.
In you current directory there will be a folder openstack, which contains the openstack source code and is shared with the devstack VM.
Inside of the VM you find the openstack data in /var/openstack.
If you wanna customize your configuration, copy config.yaml.sample to config.yaml end edit accordingly.
local_conf - set it to your own local.conf file for devstack configuration.
local_git_repos - if you have your own local git repository (maybe with you own working branches) of all the relevant openstack.org repos, set the path to it here.
http_proxy - although most necessary packages are already pre-installed in the base image, you can use a local caching http proxy to speed up the devstack setup procedure by setting a local proxy url. To set one up on fedora, just do:
$ sudo dnf install squid
Edit /etc/squid/squid.conf and add the lines
cache_dir ufs /var/spool/squid 10000 16 256
maximum_object_size 128 MB
Start it with
$ sudo systemctl enable squid
$ sudo systemctl restart squid
yum_repo - if you use a caching proxy, you should also select a specific fedora repository mirror, that is caching friendly. This you can do here.
devpi_server, devpi_port, devpi_path - You can easily setup a cache for the pip repository with devpi-server. Just do
$ pip install --user devpi-server
$ devpi-server --start --host=0.0.0.0
and uncomment these settings in config.yaml. You also have to change devpi_server to one of your local IPs.