~/talk

Block Volumes Support in Kubernetes [I]

on YouTube 35m
Talkat KubeCon + CloudNativeCon North America 2017 · 2017-12-06..12-08· [kubernetes]

speaker

name:Mitsuhiro Tanino
links:none on file

resources

video:https://youtu.be/k8_QQ9eNa-g
slides:none on file

summary

Adds raw block volume support as an alpha feature in Kubernetes 1.9, introducing two new API fields volumeMode and volumeDevices and a feature gate BlockVolume. Implements kubelet changes (per-pod volume and volumeDevices directories, symlinks to /dev), a Fibre Channel in-tree plugin for block attach, and binding rules that prevent filesystem PV/PVC mismatches. Dynamic provisioning remains incomplete; a kernel race is mitigated by opening the block device file to avoid silent volume swaps.

AI-written summary · about

chapters (18)

  1. 0:00Intro
  2. 0:27Agenda
  3. 2:23Background
  4. 8:03New feature for solution
  5. 11:46Configuration for services
  6. 12:31Block Volume Definition Persistent volume definition
  7. 13:22Block Volume Definition cont.
  8. 16:05Volume Mode binding rule for pre-provisioned PV
  9. 17:11Quick glance of block PV/PVC
  10. 18:06Quick glance of running pod with block volume
  11. 19:57Implementation deep dive
  12. 20:57Kubernetes Volume Plugin interface
  13. 25:19Directories under kubelet node
  14. 27:04Pod volume directory on kubelet node
  15. 29:18Plugin directory on kubelet node
  16. 30:55Avoid block volume silent replacement Problem
  17. 32:26Future work
  18. 35:06References

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