Libra: A Load Balancing System for Virtualized Data Center

Abstract

In the virtualized data center, load imbalances and the deviation of service level agreements of the application can occur when the load changes dynamically over time. This paper presents Libra, four- level resource management system which consists of application level controllers (ALC), virtual machine level controllers (VLC), host level controllers (HLC) and a center level controller (CLC). ALC, VLC and HLC automates the task of monitoring, detecting load unbalancing, resource managing.CU determines a new mapping of physical and virtual resources and initiating the necessary migrations. The four-level resource controllers use rule-based fuzzy logic for resource management and migration decisions.