CERN - Swisscom Meetup

Contribution List

6. Welcome

Enrico Bocchi (CERN)

15/03/2024, 09:00

10. Ceph

15/03/2024, 09:15

Ceph

• Hardware:
  -- Ceph hardware, requirements, trends
  -- Colocation with other service (hyperconverged)
  -- Storage media: HDD vs Flash
  -- Ceph IO patterns on disk
  -- Drop in storage performance for half-dead HDDs
• Operations:
  -- Repairs, hardware interventions
  -- Monitoring
  -- Upgrade -- How, to which version, validation, testing
  -- Massive capacity expansion,...

14. Kubernetes

15/03/2024, 10:30

Kubernetes

• Kubernetes Ops
  -- Upgrades, Roll-outs
  -- Tooling and relevant CNCF projects to help
• AI/ML workloads
• Interaction with Storage and Network

16. Visit to The Low Energy Ion Ring (LEIR)

Giuseppe Lo Presti (CERN)

15/03/2024, 11:45

The Low Energy Ion Ring (LEIR) receives long pulses of lead ions from Linear accelerator 3 (Linac 3) and transforms them into the short, dense bunches suitable for injection to the Large Hadron Collider (LHC).

The Low Energy Ion Ring website

17. Lunch Break

15/03/2024, 12:50

13. Hadoop

15/03/2024, 13:30

HDFS

• Hadoop:
  -- Experience on the technology
  -- Phase out / replacement plans
• Yarn
• HDFS replacement to Object Storage:
  -- HDFS copy to S3 tool and user guide
  -- Yunikorn replacing Yarn
  -- Trino replacing Hive (initial requirement and design)

11. Load Balancing + Caching

15/03/2024, 13:30

Load Balancing || Caching

• Load balancing techniques:
  -- Round Robin DNS
  -- BGP (aka multi-tier LB)
  -- Openstack Octavia (was Tungsten)
• Caching:
  -- NGINX caching and http_auth_request_module (rgw-cache)
  -- RGW onboard cache...

8. Closing Remarks

Enrico Bocchi (CERN)

15/03/2024, 15:00

12. Discussion overflow (optional)

15/03/2024, 15:15