Conveners
Basic IT Services
- Erik Mattias Wadenstein (University of Umeå (SE))
In the CERN IT agile infrastructure, Puppet is the key asset for automated configuration management of the more than forty thousand machines in the CERN Computer Centre. The large number of virtual and physical machines runs a variety of services that need to interact with each other at run time.
These needs triggered the creation the CERNMegas project, which automates the communication...
In Belgium, the 'Université catholique de Louvain' (UCLouvain) hosts a Tier-2 WLCG site. The computing infrastructure has recently been merged with the General Purpose cluster of the university. During that merge, the deployment process for the compute nodes has been re-thought, using a combination of three open-source software tools: Cobbler, Ansible and Salt. Those three tools work together...
The current authentication schemes used at CERN are based on Kerberos for desktop and terminal access, and on Single Sign-On (SSO) tokens for web-based applications.
Authorization schemes are managed through LDAP groups, leading to privacy concerns and requiring a CERN accounts to make possible the mapping to to a group.
This scenario is completely separated from WLCG, where authentication...
This talk will provide an overview of the recent changes in architecture and development procedures in use to manage all CERN networks (campus, experiments and technical networks).
These include:
- the migration from 20 years old PL/SQL code to Java using modern microservices architecture,
- the migration from multiple Git repositories to a single one in order to simplify organization and...
