The CERN Cloud Infrastructure: 5 years in 15 minutes
summary
CERN starts a private cloud with OpenStack in 2012 and scales from a few hundred hypervisors to 300K+ cores across two data centres, serving ~3,500 users and spawning 6M cumulative VMs. Architecture moves from two cells to 70 cells and two regions to enable safe upgrades; services include Nova/Neutron/Cinder/Manila, Magnum for Kubernetes clusters, Ironic for bare metal, Puppet, RunDeck and Mistral; Ceilometer is retired; work on preemptible instances and running the control plane in Kubernetes is ongoing.
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chapters (16)
- 0:00Intro
- 0:27Outline
- 2:09CVI - CERN Virtual Infrastructure
- 2:44Agile Infrastructure Project
- 4:18Prototyping CERN OpenStack Cloud
- 5:17CERN OpenStack Cloud - 2013
- 6:12CERN OpenStack Cloud - Growth
- 7:51Ceilometer - The Rise & Fall
- 8:12Storage - Cinder, Manila, S3
- 8:38Container Orchestration - Magnum
- 9:06Networking - Nova-network to Neutron
- 9:23Baremetal Provisioning - Ironic
- 10:29Operations - Rundeck and Mistral
- 10:52Splitting the Infrastructure into 2 Regions
- 12:21Preemptible Instances
- 12:49Other Challenges
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