My Openstack CLI clients stopped working, this is how I fixed them

It's a process that strikes fear into the hearts of Sysadmins everywhere. This weekend I finally got round to upgrading the Openstack cluster in my lab to Kilo. As I have no spare machines lying around (Intel NUC/HP Microserver/similar donations welcome) I did it in place.

Did it …

For the last few weeks I have been consulting on a private cloud project for a local company. Unsurprisingly this has been based around the typical Openstack setup.

• Nova - KVM
• Neutron - Openvswitch
• Cinder - LVM
• Glance - local files

My architecture is nothing out of the ordinary. A pair of hosts each …