To fulˇl JINR commitments in different national and international projects related to the use of modern information technologies such as cloud and grid computing, as well as to provide a modern tool for JINR users for their scientiˇc research, a cloud infrastructure was deployed at the Laboratory of Information Technologies of the Joint Institute for Nuclear Research. OpenNebula software was chosen as a cloud platform. Initially it was set up in simple conˇguration with single front-end host and a few cloud nodes. Some custom development was done to tune JINR cloud installation toˇt local needs: web form in the cloud web-interface for resources request, a menu item with cloud utilization statistics, user authentication via Kerberos, custom driver for OpenVZ containers. Because of high demand for that cloud service and its resources over-utilization it was redesigned to cover increasing users' needs in capacity, availability, and reliability. Recently a new cloud instance has been deployed in high-availability conˇguration with distributed networkˇle system and additional computing power.

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