Towards multi-tenant and interoperable monitoring of virtual machines in cloud

The advent of Cloud Computing introduced new challenges in various computer science fields and disciplines, monitoring being one of them. Due to the multi-tenant nature of Cloud environment, its size and use of massive virtualization, the current monitoring solutions are approaching their limits. Unlike some other approaches, focusing on data integration, aggregation, and abstraction, our work focuses on a virtual machine representing the primary source of monitoring information. In this paper, we propose requirements for the producer of monitoring information addressing existing issues related to monitoring data representation, storage, processing and distribution. As a proof-of-concept, conforming to these requirements, prototype of event-based monitoring daemon is presented in detail. The resulting solution allows multiple users to consume monitoring information in an extensible data format without impairing interoperability.