What question did this study set out to answer?

To enhance the infrastructure for code hosting and deployment at CERN by transitioning to Kubernetes.

February 5, 2026

Running version control systems and continuous integration to fulfil CERN and LHC experiments needs

ITIsmael Posada Trobo KEKonstantinos EvangelouNational and Kapodistrian University of Athens SSSubhashis SuaraEuropean Organization for Nuclear Research

Key Points

To enhance the infrastructure for code hosting and deployment at CERN by transitioning to Kubernetes.
Migrated from an old infrastructure to Kubernetes clusters.
Utilized GitLab for hosting code and automating integration tasks.
Implemented Docker Machine virtual machines for better deployment.
Achieved quicker scaling of resources.
Improved uptime and maintenance of the infrastructure.
Customized GitLab runners according to user needs.

Abstract

GitLab 1 has been used at CERN to support our users in hosting their code and automating tasks to facilitate continuous integration and deployment using generic Docker Machine virtual machines.” This paper describes our efforts to migrate from the old infrastructure, which served us well for several years, to a more efficient approach using Kubernetes clusters that allow us to scale faster, maintain the infrastructure ensuring uptime and customize the GitLab runners to our user needs.

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