Usage Policies at the Site Level in Grid
Cătălin Dumitrescu, Michael Wilde, Ian T Foster · 2004
In the Grid3 [Grid3] context, resource owners grant to different Virtual Organizations (VOs) the right to use their resources. For example, scientists might provide access to their computers, storage, and networks to different scientific collaborations, which might then use those resources for large-scale data analysis tasks of interest. In industry, such scenarios can arise when resource consumers and providers engage in outsourcing service level agreements (SLAs). Complex usage policy issues can arise in such scenarios. Owners want to express (and enforce) some usage policies under which resources are made available. VO representatives want to access and interpret policy statements published by resource owners to monitor agreements and guide their activities. Thus, both owners and VOs want to verify that policies are applied correctly. We address here the expression, publication, discovery, interpretation, enforcement, and verification of usage policies at the site level. We also describe our solutions and approaches developed over time in the Grid3 context, namely the site policy observation points (S-POPs) and site policy enforcement points (S-PEPs).