Deployment of a WLCG network monitoring infrastructure based on the perfSONAR-PS technology

[摘要] The WLCG infrastructure moved from a very rigid network topology, based on the MONARC model, to a more relaxed system, where data movement between regions or countries does not necessarily need to involve T1 centres. While this evolution brought obvious advantages, especially in terms of flexibility for the LHC experiment's data management systems, it also opened the question of how to monitor the increasing number of possible network paths, in order to provide a global reliable network service. The perfSONAR network monitoring system has been evaluated and agreed as a proper solution to cover the WLCG network monitoring use cases: it allows WLCG to plan and execute latency and bandwidth tests between any instrumented endpoint through a central scheduling configuration, it allows archiving of the metrics in a local database, it provides a programmatic and a web based interface exposing the tests results; it also provides a graphical interface for remote management operations. In this contribution we will present our activity to deploy a perfSONAR based network monitoring infrastructure, in the scope of the WLCG Operations Coordination initiative: we will motivate the main choices we agreed in terms of configuration and management, describe the additional tools we developed to complement the standard packages and present the status of the deployment, together with the possible future evolution.

[发布机构] CERN, Geneva, Switzerland^1;Internet2, Ann Arbor; MI; 48104, United States^2;Universitè di Bologna, Italy^3;Universitè di Napoli, INFN, Italy^4;INFN CNAF, Bologna, Italy^5;Universidad de Valencia, Spain^6;Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas, CIEMAT, Madrid, Spain^7;University of Manchester, Oxford Road, Manchester; M13 9PL, United Kingdom^8;University of Victoria, CA, United States; (10) Fermi National Accelerator Laboratory, United States; (11) Port d'Informacio Cientifica (PIC), Universitat Autonoma de Barcelona, Bellaterra (Barcelona), Spain; (12) Physics Department, University of Michigan, Ann Arbor; MI; 48109-1040, United States; (13) University of Oxford, Wellington Square, Oxford; OX1 2JD, United Kingdom; (14) Imperial College London, Blackett Lab, Physics Department, Prince Consort Rd, London; SW7 2BW, United Kingdom; (15) GARR, Italy; (16) University of Rochester, United States; (17) ESnet, Lawrence Berkeley National Laboratory, Berkeley; CA; 94720, United States^9

[效力级别] 计算机科学 [学科分类] 计算机科学（综合）

[关键词] Configuration and managements;Data management system;Graphical interface;Network Monitoring;Network monitoring systems;Reliable Networks;Remote management;Web-based interface