Note
The ceilometer team has limited capacity to provide support for older versions of the project. Because the project graduated from incubation around the time of the grizzly release, that is the first version for which we will provide regular ongoing support following the standard deprecation cycle for OpenStack. The grizzly version of ceilometer cannot be installed on the same server with earlier versions of OpenStack because of conflicting package requirements, but is API compatible with the folsom release if installed separately.