22–25 Sept 2025
GW1 Uni Bremen
Europe/Berlin timezone

Managing resource access for federated Users at DESY

25 Sept 2025, 09:20
20m
Raum B0080 (GW1, Uni Bremen)

Raum B0080

GW1, Uni Bremen

Vortrag (10 min + 5 min) Gemeinsamer Teil

Speaker

Johannes Reppin (Deutsches Elektronen Synchrotron DESY)

Description

In recent years web-based workflows and applications have become more prevalent in the scientific process. From applying to a beamtime to data processing there are now multiple activities that happen in a browser. Along with this there has also been a shift from traditional logins via user database logins to Single-Sign On protocols like OpenID Connect (OIDC) and SAML2. This has also brought up the possibility of integrating users via federations like eduGAIN such that logins can be achieved by using users' credentials from their home institute.
In this talk we present the way we use federated identities at DESY in order to create local user accounts for scientists so they can gain access to applications. Special focus will be put on group (VO) management in Helmholtz ID and how this allows us to manage access to resources which are not granted by default to all federated users.
We present the integrations of Keycloak with our user management backend "Registry2" and how it integrates with existing backends like LDAP / SSSD such that e.g. POSIX capabilities can be used by importing group information from Helmholtz ID via the entitlement attribute.

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Author

Johannes Reppin (Deutsches Elektronen Synchrotron DESY)

Presentation materials