期刊
JOURNAL OF NETWORK AND SYSTEMS MANAGEMENT
卷 23, 期 1, 页码 111-136出版社
SPRINGER
DOI: 10.1007/s10922-013-9280-6
关键词
Cloud computing; Distributed management; Resource allocation; Gossip protocols; Management objectives
We consider the problem of jointly allocating compute and network resources in a large Infrastructure-as-a-service cloud. We formulate the problem of optimally allocating resources to virtual data centers (VDCs) for four well-known management objectives: balanced load, energy efficiency, fair allocation, and service differentiation. Then, we outline an architecture for resource allocation, which centers around a set of cooperating controllers, each solving a problem related to the chosen management objective. We illustrate how a global management objective is mapped onto objectives that govern the execution of these controllers. For a key controller, the Dynamic Placement Controller, we give a detailed distributed design, which is based on a gossip protocol that can switch between management objectives. The design is applicable to a broad class of management objectives, which we characterize through a property of the objective function. The property ensures the applicability of an iterative descent method that the gossip protocol implements. We evaluate, through simulation, the dynamic placement of VDCs for a large cloud under changing load and VDC churn. Simulation results show that this controller is effective and highly scalable, up to 100'000 nodes, for the management objectives considered.
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