The CERN OpenStack cloud

CERN’s private Infrastructure-as-a-Service layer, which provisions more than 90% of the infrastructure in the computer centre. Kubernetes clusters come from OpenStack Magnum as a self-service resource, and bare metal from OpenStack Ironic — which matters for performance-sensitive workloads where the virtualisation tax is not worth paying. It is the substrate the rest of this layer runs on.

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Topology

• Part of: compute-platforms
• Runs on: meyrin-data-centre
• Runs on: prevessin-computing-centre — the cloud spans both centres.
• Uses: landb — network provisioning goes through it.
• Cites: cern-cloud-docs — the IaaS model, Magnum and Ironic.