Due to an issue in python-memcache library deployment of the primary controller may fail with Keystone process hanging on API requests. Should this happen, the deployment of the cluster must be restarted. Our tests show that this is a very uncommon case (like once per thousand deployments).
I suggest we add something like:
Due to an issue in python-memcache library deployment of the primary controller may fail with Keystone process hanging on API requests. Should this happen, the deployment of the cluster must be restarted. Our tests show that this is a very uncommon case (like once per thousand deployments).