Multi-layer QoS Monitoring in Private Clouds

Cloud computing represents at this point the standard delivery method for the infrastructure and platform of next generation applications. The emergence of a wide range of commercial cloud services have changed not only the way code is written and maintained, but also the way it is executed. Private clouds play an important role in this new service delivery model being designed to provide computing capacity within the organization premises either standalone or in a hybrid model. As resources of the private cloud are limited, QoS assurance becomes an important challenge. This paper presents the design of a monitoring solution that integrates several open source tools and can assure QoS for private clouds. The solution is implemented for IBM CloudBurst 2.1 and IBM TSAM product stack and can monitor a wide range of services, from CPU and memory load to J2EE services and HTTP statistics generate real time alerts and provide integration with a Jira based issue tracking tools. The overall solution provides a closed loop QoS system for private clouds that is able to prevent a large set of issues and provide real time diagnostic data for root cause analysis.