When you plan to run an OpenStack Cloud, you also plan with some issues. Like features you need, but they are not ready yet, or missing. But what you usually don’t have on your Roadmap are the issues that OpenStack just “digs out of the mud”. For example if you’re lucky and you get new fresh hardware for your cloud, you might run into issues with unstable drivers/modules, unsupported features and such. Or if you plan to develop OpenStack, you might underestimate the complexity.
source by Open Infrastructure Foundation