Joint Policy- and Network Network-Aware Aware VM Management for Cloud Data Centers
Abstract: Policies play an important role in network configuration and therefore in offering secure and high performance services especially over multi multi-tenant tenant Cloud Data Center (DC) environments. At the same time, elastic resource provisioning through virtualization often disregards policy requirements, assuming that the policy implementation is handled by the underlying network infrastructure. This can result in policy violations, performance degradation and security vulnerabilities. In this paper, we define PLAN, a PoLicy-Aware Aware and Network-aware Network VM management scheme to jointly consider DC communication cost reduction through Virtual Machine (VM) migration while meeting network policy requirements. We show that the problem is NP NP-hard hard and derive an efficient approximate te algorithm to reduce communication cost while adhering to policy constraints. Through extensive evaluation, we show that PLAN can reduce topology-wide wide communication cost by 38 percent over diverse aggregate traffic and configuration policies.