CERN Accelerating science

ATLAS Note
Report number	ATL-DAQ-PROC-2012-026
Title	Centralized configuration system for a large scale farm of network booted computers
Author(s)	Ballestrero, S (Johannesburg U. ; CERN) ; Brasolin, F (INFN, Bologna) ; Darlea, G-L (Bucharest, Polytechnic Inst. ; CERN) ; Dumitru, I (Bucharest, Polytechnic Inst.) ; Scannicchio, D A (UC, Irvine) ; Twomey, M S (Washington U. ; CERN) ; Valsan, M L (CERN) ; Zaytsev, A (Novosibirsk, IYF)
Corporate Author(s)	The ATLAS collaboration
Publication	2012
Imprint	24 Jun 2012
Number of pages	5
In:	J. Phys.: Conf. Ser. 396 (2012) pp.042004
In:	Computing in High Energy and Nuclear Physics 2012, New York, NY, USA, 21 - 25 May 2012, pp.042004
Subject category	Detectors and Experimental Techniques
Accelerator/Facility, Experiment	CERN LHC ; ATLAS
Free keywords	computing farm, configuration tool, mysql database, web graphical interface
Abstract	In the ATLAS Online computing farm, the majority of the systems are network booted - they run an operating system image provided via network by a Local File Server. This method guarantees the uniformity of the farm and allows very fast recovery in case of issues to the local scratch disks. The farm is not homogeneous and in order to manage the diversity of roles, functionality and hardware of different nodes we developed a dedicated central configuration system, ConfDB v2. We describe the design, functionality and performance of this system and its web-based interface, including its integration with CERN and ATLAS databases and with the monitoring infrastructure.
Copyright/License	Preprint: (License: CC-BY-4.0)

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