Alocação de Infraestruturas Virtuais Confiáveis em Múltiplos Provedores IaaS
ResumoThe cloud computing paradigm consolidated the on-demand provisioning of virtual resources. However, the diversity of services, prices, Data Centers (DCs), and geographical footprints, have turned the clouds into a complex and heterogeneous environment. There are several Infrastructure-as-aService(IaaS) providers differentiated by the provisioning costs, and service capabilities. Due to management complexity, the survivability and reliability aspects are often disregarded by tenants, eventually resulting on heavy losses due to unavailability of services hosted by Virtual Infrastructures (VIs). We present an alternative to improve VIs survivability and reliability, taking into account the use of replicas and the spreading of virtual resources atop providers, regions, and zones. Replicas are used to achieve an user-defined reliability level while the controlled spreading of VI components decrease the probability of full outages. In addition, the proposal performs a cost-effective provisioning. We formulate the VI allocation, survivability, and reliability requirements as a Mixed Integer Program (MIP). Simulation results using different target reliability levels shows an increase on survivability without inflating costs.
RAUGUST, Anderson S.; SOUZA, Felipe R. de; PILLON, Maurício A.; MIERS, Charles C.; KOSLOVSKI, Guilherme P.. Alocação de Infraestruturas Virtuais Confiáveis em Múltiplos Provedores IaaS. In: SIMPÓSIO BRASILEIRO DE REDES DE COMPUTADORES E SISTEMAS DISTRIBUÍDOS (SBRC) , 2018 Anais do XXXVI Simpósio Brasileiro de Redes de Computadores e Sistemas Distribuídos. Porto Alegre: Sociedade Brasileira de Computação, may 2018 . ISSN 2177-9384.