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Enhancing Computing Infrastructure at DAPNIA: A 30-Year Evolution of AFS and Linux Systems

This report details the development and future outlook of DAPNIA's computing infrastructure, focusing on the use of AFS (Andrew File System) and Linux systems over three decades. It outlines milestones from the first installation in 1993 to significant upgrades and migrations, including OpenAFS and the integration of modern operating systems. The document also discusses the management of workstations, the implementation of client-server models, and strategies for future upgrades, showcasing DAPNIA's commitment to evolving technology needs in supporting physicists and astrophysicists.

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Enhancing Computing Infrastructure at DAPNIA: A 30-Year Evolution of AFS and Linux Systems

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  1. DAPNIA/Pierre-Francois Honore DAPNIA site report

  2. DAPNIA/Pierre-Francois Honore • Network : RENATER, Nortel Contivity VPN • Computer Center : CCIN2P3 • Grid : EGEE • dapnia.saclay.cea.fr AFS cell • Status, Future • Workstations : XP, Linux

  3. DAPNIA/Pierre-Francois Honore Transarc AFS • 1993: first installation at Saclay on IBM AIX and HP UX 9 inside CERN cell • 1995: first official DAPNIA cell drives by IBM RS 6000 using TRANSARC license (no home directory) • 1996: new server IBM 43P with AFS 3.5 and 9 Go of disk • 2002: upgrade to AFS 3.6 on AIX 4.3.3.10

  4. DAPNIA/Pierre-Francois Honore OpenAFS 2003 Migration to OpenAFS • Authentification and file servers on 2 Dell PCs running RH Linux 9 with OpenAFS 1.2.9 used by HEP physicists (1 TB) • 1 Dell PC running RH Linux 7.3 with 200 GB of SCSI drives used by astrophysicists Used as software and data repository and few home

  5. DAPNIA/Pierre-Francois Honore AFS Future Test bench : • Server running on FC 1 • Client (compiled from openafs.org CVS) running on Debian sid with kernel 2.6.6 Kerberos5 FC2, CERN CEL, or HEP distribution ?

  6. Windows • Migration to Windows XP : PXE installation + automatic update • Laptop issue • Integration in CEA domain • 1 WT Server for RDP access with rdesktop clients DAPNIA/Pierre-Francois Honore

  7. DAPNIA/Pierre-Francois Honore Linux at DAPNIA • 150 PCs Dell running RH Linux 7 to 9 and some Debian knoppix managed with apt-get, Cfengine • 5 nodes μcluster with FC 1 : Oscar (SIS, Ganglia, PBS), openMosix, pvfs, 2.6 kernel • Since December 2003, 20 WhiteBox Enterprise Linux now apt upgraded to CEL. • Last week, 2 Scientific Linux installed • Standard services : NIS, NFS, AFS, cups

  8. DAPNIA/Pierre-Francois Honore Linux at DAPNIA • Install using kickstart with PXE boot and a local mirror (http + apt) of the RPMs : global management tool : hardware, software, upgrade ? • Laptop issue : security patch, disk mirroring • Upgrade path : Debian (knoppix TS, anaconda), FC, FedoraLegacy, CERN, HEP

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