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Virtual Organisations Building a support infraestructure

Explore the support infrastructure for virtual organisations, including collaborative tools, resource location, and the Searchy architecture. Learn about the IRISGrid case and how it empowers users to work collectively. Discover the benefits of a federated model and the importance of a common view of information.

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Virtual Organisations Building a support infraestructure

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  1. Virtual OrganisationsBuilding a support infraestructure

  2. Virtual OrganisationsWhy a support infrastructure User User Resource User Resource Resource User Resource Resource Resource User Resource User Resource User User User User User • Users own and require resources • Shared • Collective A infrastructure to support this activities

  3. Virtual Organisations User Resource User Resource User Resource User Resource Resource User User • A set of users • Working in a certain common area • Sharing similar needs • Data processing • Access to data sources • Interaction among them • Pursuing similar goals • A set of resources • Computational • Storage • Data sources • Remote device operation • Knowledge bases • . . .

  4. A support infraestructureThe IRISGrid case • pkIRISGrid • Distributed RAs per organisation/VO • Based on the IRISGrid directory • The IRISGrid AAI • Grid portal toolkits • Collaborative tools • From mailing lists to real-time systems • Resource location • Based on a federated approach • The IRISGrid Directory • VO management: Users, centres, resources, research areas • Web interfaces wherever possible • As integrated as we can

  5. Collaborative toolsThe good old mailing lists • Essential for basic interactions • General coordination lists • Participants, support staff, middleware staff,... • General areas: HEP, biotech, astro-sciences,... • Owned by the IRISGrid admins • A specific list per VO • Connected to the general areas the VO is classified in • Owned by the VO managers • Based on listserv • The current mailing list software at RedIRIS • Plans to migrate to Sympa • Better integration with the supporting infrastructure

  6. Collaborative toolsPresence and instant messaging • Informal and direct interaction • Both P2P and collective • Automatic roster initialisation • People in the VO(s) a user is included • Loose control • Direct management of contacts • Free creation and management of chat rooms • Based on Jabber • Hosted at the RedIRIS server • Experiments with a server mesh • Experimenting with the integration of real-time • Wiki in the queue

  7. Collaborative toolsReal-time interactions • Few Access Grid rooms • ROI perception by institutional responsibles • Well-established network of H.323 conference rooms • Public directory available for users • GDS in operation and expanding • Specific RedIRIS community in VRVS • Four reflectors in Spain (2 at the RedIRIS premises) • ~1500 registered users, ~800 reserved hours per month • Training activities • Good contact with the VRVS developers • Exploring incorporation of AAI technologies • Evaluating SIP.edu

  8. The RedIRIS VRVS community

  9. Resource location • In the broad sense we have been using so far • From a cluster to a set of related papers • Common directories are the usual answer to this • But they face data partition • Formats, protocols, security (and privacy) considerations • The result is the continuous re-building of central repositories of data • Almost automatically outdated with respect to their once local sources • The federated model comes into play once again • Accessing or collecting data from them using a trusted link • Maintaining total autonomy for the federated repository • Policies, methods, interfaces • Offering a common (possibly particular) view of information

  10. The Searchy architecture • Each source incorporates an agent, available through a SOAP interface • Uses RDF as internal representation • Agents for LDAP, SQL, Harvest, the Google API, and Searchy itself

  11. A sample Searchy installation

  12. The IRISGrid Directory User MDS Centre User User VO User MDS User Centre User User VO User MDS Area classification Centre User User IRISGrid Globus Directory The IRISGrid Directory

  13. The IRISGrid DirectorySchemas • Support for VOs: irisgridVo • Support for Centres and/or departments: irisgridOu • Support for users: irisgridUser • Support for the PKI objects: pkirisgridCertObject, pkirisgridRA, pkirisgridUser • Other iris-* schemas • irisPerson, irisInetEntity, copaObject, papiUser,... • Extensions to the eduPerson schema • Standardization in process through SCHAC • At least in the inter-institutional aspects • Heavy use of the COPA coding schema to support navigation and searching

  14. The IRISGrid DirectoryCOPA coding schema • A coding schema to support (virtual) hierarchical access • Based in creating strings identifiers (URNs, for example) that resemble the hierarchy of a given classification (or ontology) • Identifiers are added to data available for a certain element • Mappings between COPA identifiers and their semantics are kept in a separate repository (directory branch, for example) • Simplifies searches and navigation • Decouples representation from the view offered at each moment • Several views can be offered in parallel • And hot-swap them • More on this athttp://www.rediris.es/ldap/copa/copa-intro.en.pdf

  15. The IRISGrid DirectoryA sample VO entry COPA coding of the VO areas of research

  16. The IRISGrid DirectoryA sample centre entry VOs this centre is participating in

  17. The IRISGrid DirectoryA sample user entry VOs the user is member of Centre the user belongs to

  18. Web interfaces • Navigation and management of the IRISGrid Directory • Navigation and searching by research areas • UNESCO Thesaurus, CATRE, e-Ciencia • VOs related to a certain area • Users participating in an VO • Collaborative resources available to a VO • mapfile generation • Centres related to VOs • Navigation through the computational resources (MDS) • pkIRISGrid • Users • RA operators • Many tasks ahead

  19. Web interfacesNavigating through an VO

  20. Web interfacesNavigating through a centre

  21. Web interfacesData for a certain user

  22. Web interfacesGenerating a mapfile for an VO

  23. Web interfacesNavigating MDS

  24. Web interfacespkIRISGrid CSR IRISGrid identifier name@scope j.masa@rediris.es PIN (passphrase) used for revocations

  25. Web interfacesCSR management at an RA New CSR a1b33c1 j.masa@rediris.es

  26. Web interfacesInstalling a certificate Issuer: CN=CA, OU=pki, DC=irisgrid, DC=esSubject: CN=towoto2.firefox@rediris.es, DC=irisgrid, DC=es

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