ceilometer-acompute is enabled unless I didn't put it DISABLED_SERVICE (devstack)
ceilometer fails when it tries to poll to swift in case swift uses self-signed Certificate (Juno)
ceilometer 'instance' meter cannot pick up instances in shelved status(Mitaka)
freezer volume snapshot does not work(Mitaka)
nova-compute service is not excluded from the result of 'nova hypervisor-stats' even it's deleted but not disabled yet
In case using USE_SSL=True or enable_service tls-proxy on devstack, keystone always listens on tcp 443 + path access enabled. This is not a typical use case and should be configurable.