Resource monitoring and discovery in OGSA Sergio Andreozzi Simone Ludwig

DataTAG WP4 meeting - Bologna - 14 jan 2003 OUTLINE Modeling Grid Resources Provide an architecture for: Publishing, Discovering&Matchmaking, Monitoring, Auditing, Managing DataTAG WP4 meeting - Bologna - 14 jan 2003

Modeling Grid Resources Glue schema superseeds EDG and Globus schemas short term solution CIM (GGF CGS WG is extending it) (Candidate) Medium term solution for resource/service conceptual modeling Open issues: how to model quality of services/resources? do we want to collaborate with CGS WG for CIM extensions? How? how do we model OGSA services? DataTAG WP4 meeting - Bologna - 14 jan 2003

Requirements for an OGSA-based discovery architecture GSI-based authentication Role based authorization e.g. a site manager is allowed to see everything a user is allowed to access only its jobs and services status a VO monitoring service is allowed to access its resource domain Configurable data aggregation entity Not just caching (e.g. view of monitoring data, view on a certain VO resources) DataTAG WP4 meeting - Bologna - 14 jan 2003

‘Smart’ discovery service I’d like to ask: What’s the best batch computing service I can access at the moment that can provide a certain computational power? And tomorrow at 5 P.M.? We need for: Modeling quality of grid services Inexact matchmaking need for semantics (ontology) More flexible monitoring&discovery service better query model easier schema management (in MDS, each schema change need to be installed in every GRIS/GIIS) DataTAG WP4 meeting - Bologna - 14 jan 2003

Constraint monitoring Based on your credentials and permissions You can access information for which you are authorized A specified monitoring profile specify what you want to monitor DataTAG WP4 meeting - Bologna - 14 jan 2003

DataTAG WP4 meeting - Bologna - 14 jan 2003 Near future MDS 2.2 – last version before GT3 In GT3 alpha, OGSI-fied MDS OGSI-Compliant MDS Index Service (aka GIIS), supporting aggregation of information from MDS-2 GIISs and CIM providers. (Implemented in Java.) In final GT3 ??? DataTAG WP4 meeting - Bologna - 14 jan 2003

DataTAG WP4 meeting - Bologna - 14 jan 2003 How can we contribute? Maintain/extend the Glue schema Collaborate with CGS WG for CIM extensions Prototype for OGSA-based service discovery Formalize a language for quality of service description Explore OGSA-based service monitoring DataTAG WP4 meeting - Bologna - 14 jan 2003