Abstract
ITMO University (ifmo.ru) is developing the cloud of geographically distributed data centres. The geographically distributed means data centres (DC) located in different places far from each other by hundreds or thousands of kilometres. Usage of the geographically distributed data centres promises a number of advantages for end users such as opportunity to add additional DC and service availability through redundancy and geographical distribution. Services like data transfer, computing, and data storage are provided to users in the form of virtual objects including virtual machines, virtual storage, virtual data transfer link.
Highlights
The number of geographically distributed data centres (DC) grows each year
distributed operating management system (DOMS) with mentioned features has been implemented in the form of software agents running in an isolated operating environment like a virtual machines (VM) or containers
Two basic Ceph clusters have been created to implement Software Defined Storage (SDS): one cluster connected to the Cinder OpenStack module is used as a backend for block devices of user' s virtual machines and the other is used for service storage
Summary
The number of geographically distributed data centres (DC) grows each year. Quite often new DCs are located in cold regions of the world to save money and energy for cooling. It is probably better to maintain DC without permanent staff To manage such DCs, a distributed operating management system (DOMS) is needed. The requirements for system stability in terms of hardware and software malfunctions are high. These are defined through specific Service Level Agreements (SLA). The DOMS requires a specific combination of operating system, cloud system, storage organization and networking. DOMS uses the following essential software components: OpenStack [2,3] as a cloud platform, Ceph [4] as a storage subsystem, SaltStack [5] as an IaC engine and many other program systems. The NauLinux [6] is used as an operating system
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