OpenStack Orchestra, Um Escalonador de Máquinas Virtuais e Balanceador de Carga para Nuvens OpenStack

Abstract

Cloud Computing refers to both applications delivered as services over the Internet as well as the hardware and systems that provide these services. Services are called Software-as-a-Service (SaaS). The data center hardware and software is what is called the Cloud. The Cloud is managed by a software. Currently there are several softwares capable of managing Clouds: OpenStack, Cloudstack, OpenNebula and Eucalyptus, are examples of this kind of software. In this work OpenStack was used. OpenStack is a Cloud software that offers the ability to control a huge amount of computing, networking and storage resources. Its mission is to enable any organization to create and offer Cloud Computing services. In this work is presented the OpenStack Orchestra, a scheduler and load balancer for OpenStack Clouds. Its architecture consists of two modules: a VM Scheduler (Symphony) and a load balancer (Maestro). The operation of these modules depends on other modules and services that have been developed in this work. Htop-as-aservice is a service that provides information about memory and CPU consumption. Lightwatch is a collector that uses htop-as-a-service to gather data about the Cloud. Lightwatch-API is the service that keeps the information available to Symphony and Maestro modules. The OpenStack Orchestra is designed so that scheduling and balancing policies can be easily added. For the validation of the OpenStack Orchestra, two policies were developed for each module: Round Robin and Compact. Each module had 100 test runs for each policy and the behavior was exactly as expected.