Merging OpenStack-based private clouds: the case of CloudVeneto.it

Supporting Single Sign On (SSO) and INFN AAI based on SAML v2. The CloudAreaPadovana is, since 2014, a scientific IaaS cloud, spread across two different sites: the INFN Padova Unit and the INFN Legnaro National Labs. The entire computing facility, owned by INFN, satisfies the computational and storage demands of more than 100 users afferent to about 30 research projects, mainly related to HEP and Nuclear Physics.