SELECTING VIRTUAL MACHINES TO BE MIGRATED TO PUBLIC CLOUD DURING CLOUD BURSTING BASED ON RESOURCE USAGE AND SCALING POLICIES

摘要

A method, system and computer program product for selecting virtual machines to be migrated to a public cloud. The current resource usage for virtual machine instances running in the private cloud is determined. Furthermore, any scaling policies attached to the virtual machine instances running in the private cloud are obtained. Additional resource usages for any of the virtual machine instances with a scaling policy are computed for when these virtual machine instances are scaled out. A cost of running a virtual machine instance in the public cloud is then determined using its current resource usage as well as any additional resource usage if a scaling policy is attached to the virtual machine instance based on the cost for running virtual machine instances in a public cloud. If the cost is less than a threshold cost, then the virtual machine instance is selected to be migrated to the public cloud.

主权项

1. A method for selecting virtual machines to be migrated to a public cloud during cloud bursting, the method comprising:
determining current resource usage for each of a plurality of virtual machine instances running in a private cloud; obtaining one or more scaling policies for said plurality of virtual machine instances running in said private cloud; computing additional resource usage for each of said plurality of virtual machine instances with a scaling policy when scaled out; receiving a cost for running virtual machine instances in said public cloud based on resource usage; determining, by a processor, a cost of running a virtual machine instance of said plurality of virtual machine instances in said public cloud using said current resource usage and said additional resource usage when said virtual machine instance of said plurality of virtual machine instances is scaled out based on said received cost for running said virtual machine instances in said public cloud; and selecting said virtual machine instance of said plurality of virtual machine instances to be migrated from said private cloud to said public cloud in response to said cost being less than a threshold value.