说明：  To provide researchers in scientific fields with the computing capacity that they need, several solutions have emerged. Cloud computing is known for providing on-demand self-service, elasticity, flexibility, and cost reduction. However, open source clouds such as Eucalyptus, OpenNebula, OpenStack, and Apache CloudStack don’t provide features to handle computing tasks or workloads on virtual machines. Here, a solution is presented that lets the user tasks within Apache CloudStack’s interface, supporting task deployment, management, and retri , even in external Secure Shell-reachable computing resources.