devstack on centos7 on virtualbox

when trying to install devstack on centos7 on virtualbox, you may run into an error about "Could not determine host IP address".

a workaround for this is;
- open stackrc
- find HOST_IP
- change it to read HOST_IP=${HOST_IP:-10.0.2.15}

and you're off!

https://bugs.launchpad.net/devstack/+bug/1644145/comments/4

Get the Guest IP Address for a VM in VMWare Fusion

Great little trick from here...

/Applications/VMware\ Fusion.app/Contents/Library vmrun getGuestIPAddress [location of your VM's .vmx]