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19–25 Oct 2024
Europe/Zurich timezone

CMS Token Transition

22 Oct 2024, 16:51
18m
Room 2.B (Conference Room)

Room 2.B (Conference Room)

Talk Track 4 - Distributed Computing Parallel (Track 4)

Speaker

Brian Paul Bockelman (University of Wisconsin Madison (US))

Description

Within the LHC community, a momentous transition has been occurring in authorization. For nearly 20 years, services within the Worldwide LHC Computing Grid (WLCG) have authorized based on mapping an identity, derived from an X.509 credential, or a group/role derived from a VOMS extension issued by the experiment. A fundamental shift is occurring to capabilities: the credential, a bearer token, asserts the authorizations of the bearer, not the identity.

By the HL-LHC era, the CMS experiment plans for the transition to tokens, based on the WLCG Common JSON Web Token profile, to be complete. Services in the technology architecture include the INDIGO Identity and Access Management server to issue tokens; a HashiCorp Vault server to store and refresh access tokens for users and jobs; a managed token bastion server to push credentials to the HTCondor CredMon service; and HTCondor to maintain valid tokens in long-running batch jobs. We will describe the transition plans of the experiment, current status, configuration of the central authorization server, lessons learned in commissioning token-based access with sites, and operational experience using tokens for both job submissions and file transfers.

Primary authors

Alan Malta Rodrigues (University of Notre Dame (US)) Brian Paul Bockelman (University of Wisconsin Madison (US)) Chan-Anun Rungphitakchai (University of Wisconsin Madison (US)) Dave Dykstra (Fermi National Accelerator Lab. (US)) Diego Ciangottini (INFN, Perugia (IT)) Edita Kizinevic (CERN) Eric Vaandering (Fermi National Accelerator Lab. (US)) Marco Mascheroni (Univ. of California San Diego (US)) Panos Paparrigopoulos (CERN) Rahul Chauhan (CERN) Sarun Nuntaviriyakul (Chulalongkorn University (TH)) Stephan Lammel (Fermi National Accelerator Lab. (US)) Vaiva Zokaite (Vilnius University (LT))

Presentation materials