Speaker
Mr
Marian ZUREK
(CERN, ETICS)
Description
gLite is the next generation middleware for grid computing. Born from the
collaborative efforts of more than 80 people in 12 different academic and industrial
research centers as part of the EGEE Project, gLite provides a bleeding-edge,
best-of-breed framework for building grid applications tapping into the power of
distributed computing and storage resources across the Internet. Currently, gLite is
composed of more than 25 different services, implemented in different languages,
using different technologies and all coming with individual configuration needs. In
addition gLite can be run in multiple operational scenarios and supports presently
hundreds of configuration options. Past experience has shown that configuration and
management are one of the biggest challenges of such a system. As part of the
investigations of ways of configuring, deploying and managing gLite, the Quattor
system was tested as a candidate for large-scale installations. This presentation
will discuss how the functionality provided by Quattor has been experimentally
applied in the context of the internal gLite testbed management. Different aspects
are described ranging from the Quattor server installation itself to the population
of the Software Repository and the definition of the Configuration Database. The
paper also shows how the required information can be generated automatically from the
gLite configuration files and build dependencies lists in order to allow seamless
integration of gLite within the Quattor system. The most challenging part, the
service lifecycle management, has also been addressed. A Quattor NCM component has
been developed to transform the Quattor data structures into gLite configuration
files and to act on the gLite configuration scripts to reconfigure the service as
information change.
The future steps and possible areas of improvements are described.
Primary authors
Mr
Alberto DI MEGLIO
(CERN, ETICS)
Cal LOOMIS
(Laboratoire de l''Accelerateur Lineaire (LAL) (IN2P3) (LAL) Universite de Paris-Sud (ParisXI))
Mr
Marian ZUREK
(CERN, ETICS)
