Horizon - Dashboard

Horizon is the web dashboard that pulls all the different pieces together from the OpenStack ecosystem.

Horizon provides a web frontend for OpenStack services. Currently, it includes all the OpenStack services as well as some incubated projects. It was designed as a stateless and data-less web application. It does nothing more than initiate actions in the OpenStack services via API calls and display information that OpenStack returns to Horizon. It does not keep any data except the session information in its own data store. It is designed to be a reference implementation that can be customized and extended by operators for a particular cloud. It forms the basis of several public clouds, most notably the HP Public Cloud, and at its heart is its extensible modular approach to construction.

Horizon is based on a series of modules called panels that define the interaction of each service. Its modules can be enabled or disabled, depending on the service availability of the particular cloud. In addition to this functional flexibility, Horizon is easy to style with Cascading Style Sheets (CSS).