Nova: computing services, virtualization technology, virtual machines to create, manage, delete, openstack is the most core services.
Neutron: network services, Internet access is available for virtual machines, physical machines like switches and routers
Glance: mirror service, warehouse management template image, mirroring provides a template for the virtual machine.
Cinder: block storage service, to provide additional hard disk for the virtual machine.
Keystone: certification services to provide authentication and authorization functions to openstack each component.
https://i-beta.cnblogs.com/comments
Horizon: providing a web interface, through a web interface, can be achieved built cloud host, distribution networks, security group configuration, plus other functions cloud disk.
Ceilometer: monitoring billing services, prepared for the public cloud, private cloud is not required. (Private cloud without adding to monitor billing services, will only add to the burden on the server)
Swit: object storage service for write once, eat, for example Baidu cloud disk, this service is not required, it is an optional service.
heat: choreography service, template-based automated deployment service, belong to advanced services.