The Art of Teuthology
summary
The Ceph QA pipeline replaces a combinatoric YAML-matrix (example: a Ratt suite would enumerate ~2.7 million jobs, impossible on ~200 nodes) with a graph walk model that generates jobs by path walks and prunes infeasible paths in linear time. Fragment merging supports new Lua pre/post-merge scripts to programmatically modify or reject fragments, and a Lua “tag” node auto-expands release tags to create upgrade paths. Prototype code is implemented, a toy PR exists, and conversion increased one upgrade suite from ~90 to ~300 concrete tag-aware jobs.
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chapters (10)
- 0:00Introduction to Teuthology
- 1:09What is Teuthology?
- 4:38YAML fragments and suites
- 7:55Overrides and convolve operator
- 11:27Subset operations and complexity
- 13:58Lua scripts for dynamic jobs
- 20:51Upgrade testing in Teuthology
- 27:09Tagged version automation
- 29:15Future vision for Teuthology
- 32:51Q&A session
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