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Large scale dynamic web deployment for CERN, experience and outlook
/ Reddy, Rajula Vineet (CERN) ; Yde, Joachim Valdemar (CERN) ; Barros, Francisco Borges Aurindo (CERN) ; Antunes, Carina (CERN) ; Wagner, Andreas (CERN)
CERN hosts more than 1200 websites essential for the mission of the Organization, both for internal and external collaboration and communication, as well as public outreach. The complexity and scale of CERN’s online presence is very diverse with some websites, like home.cern, accommodating more than one million unique visitors in a day. [...]
2024 - 8 p.
- Published in : EPJ Web Conf. 295 (2024) 05011
Fulltext: PDF;
In : 26th International Conference on Computing in High Energy & Nuclear Physics, Norfolk, Virginia, Us, 8 - 12 May 2023, pp.05011
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Building a Kubernetes infrastructure for CERN’s Content Management Systems
/ Samaras-Tsakiris, Konstantinos (CERN) ; Vineet Reddy, Rajula (CERN) ; Borges Aurindo Barros, Francisco (CERN ; IST, Lisbon) ; Alvarez Fernandez, Eduardo (CERN) ; Wagner, Andreas (CERN)
The infrastructure behind home.cern and 1000 other Drupal websites serves more than 15,000 unique visitors daily. To best serve the site owners, a small engineering team needs development speed to adapt to their evolving needs and operational velocity to troubleshoot emerging problems rapidly. [...]
2021 - 12 p.
- Published in : EPJ Web Conf. 251 (2021) 02064
Fulltext: PDF;
In : 25th International Conference on Computing in High-Energy and Nuclear Physics (CHEP), Online, Online, 17 - 21 May 2021, pp.02064
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When One Line Took Thousands of Websites Offline
/ Henschel, Jack (CERN) ; Borges Aurindo Barros, Francisco (CERN)
This talk describes an incident where an innocuous change in a configuration management system caused a highly-visible unavailability of thousands of websites, which was followed by an intense recovery procedure. The talk covers the part of the infrastructure that prevented more widespread damage, the lessons learned (in terms of infrastructure design and operational procedures) as well as improvements significant improvements that have been implemented since then. [...]
IT-TALK-2012-008.-
Geneva : CERN, 2023
Fulltext: PDF;
In : SREcon EMEA 2023
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EOS and Ceph integration with Kubernetes
/ Fornari, Federico (speaker)
Due to the increasing interest on data management services capable to cope with very large data resources, allowing the future e-infrastructures to address the needs of the next generation extreme scale scientific experiments, the national center of INFN (Italian Institute for Nuclear Physics) dedicated to Research and Development on Information and Communication Technologies (CNAF) and the Conseil Européen pour la Recherche Nucléaire (CERN) joined their experiences on storage systems to evaluate and test different technologies for next-generation storage challenges.
The activity focused on the integration, using Kubernetes as orchestrator, of different storage systems (EOS and Ceph) with the aim to combine the high level scalability and stability of EOS services with the reliability and redundancy features provided by Ceph.
In particular, EOS services have been deployed as containers and orchestrated by Kubernetes, the well-known open-source container-orchestration system for automating computer application deployment, scaling and management.
The activity leverages in the possibility to integrate the two storage solutions by deploying them as containers and orchestrated by Kubernetes. In this respect, Kubernetes has been adopted to test different cluster-deployment scenarios (both on cloud and bare-metal) and assess their performances, bringing important improvements in terms of system operations, management and scalability.
The results obtained by measuring the performances of the different combined technologies, comparing for instance block device and file system as backend options provided by a Ceph cluster deployed on physical machines, will be shown and discussed..
2022 - 774.
HEP Computing; EOS workshop
External links: Talk details; Event details
In : EOS workshop
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Lightweight WLCG sites : The SIMPLE Grid Framework
/ Sharma, Mayank (CERN) ; Litmaath, Maarten (CERN) ; Silva Junior, Eraldo (Rio de Janeiro, CBPF) ; Santana, Renato (Rio de Janeiro, CBPF)
This article describes a new framework, called SIMPLE, for settingup and maintaining classic WLCG sites with minimal operational efforts and insights needed into the WLCG middleware. The framework provides a single common interface to install and configure any of its supported grid services, such as Compute Elements, Batch Systems, Worker Nodes and miscellaneous middleware packages. [...]
2019 - 8 p.
- Published in : EPJ Web Conf. 214 (2019) 07019
Fulltext from publisher: PDF;
In : 23rd International Conference on Computing in High Energy and Nuclear Physics, CHEP 2018, Sofia, Bulgaria, 9 - 13 Jul 2018, pp.07019
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The ATLAS public website - Evolution to Drupal 8
/ Velho, Mariana (CERN)
/ATLAS Collaboration
Four years after the deployment of the ATLAS public website using the Drupal 7 content management system, the ATLAS Education & Outreach group has completed its migration to the new CERN Drupal 8 infrastructure. We present lessons learned from the development, usage, and evolution of the original website, and how the choice of technology helped to shape and reinforce our communication strategy. [...]
SISSA, 2021 - 5 p.
- Published in : PoS LHCP2021 (2021) 164
Fulltext: PDF;
In : 9th Annual Large Hadron Collider Physics (LHCP 2021), Online, GB, 7 - 12 Jun 2021, pp.164
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A grid site reimagined
/ Taylor, Ryan (University of Victoria (CA)) ; Albert, Jeffrey Ryan (University of Victoria (CA)) ; Barreiro Megino, Fernando Harald (University of Texas at Arlington (US))
/ATLAS Collaboration
The University of Victoria (UVic) operates an Infrastructure-as-a-Service science cloud for Canadian researchers, and a WLCG T2 grid site for the ATLAS experiment at CERN. At first, these were two distinctly separate systems, but over time we have taken steps to migrate the T2 grid services to the cloud. [...]
ATL-SOFT-SLIDE-2023-148.-
Geneva : CERN, 2023
Fulltext: PDF; External link: Original Communication (restricted to ATLAS)
In : 26th International Conference on Computing in High Energy & Nuclear Physics, Norfolk, Virginia, Us, 8 - 12 May 2023
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