Cozystack Completes the CNCF General Technical Review

Cozystack completes the CNCF General Technical Review — reference bench results

Cozystack has completed the CNCF General Technical Review, the technical half of the due diligence for moving from Sandbox to Incubation. The snapshot is filed with the CNCF Technical Oversight Committee in cncf/toc#2305, and the living document is kept in the repository as GENERAL_TECHNICAL_REVIEW.md.

The review asks what an operator asks before trusting a platform in production — how it is installed, upgraded and rolled back, what it costs to run, how it fails, and how security issues are handled — across Day 0 planning, Day 1 installation and Day 2 operations.

Questions about overhead and scale were answered by measurement, on three servers with 32 vCPU and 128 GB each:

  • the idle platform takes about one CPU core and 19 GiB of memory across all three nodes;
  • 71 managed PostgreSQL instances with replicated volumes ran with no failures;
  • a mixed load of about 76 applications and 402 pods reached Ready without hitting a compute, memory or storage ceiling;
  • an upgrade converged in about three minutes, a downgrade in about four, and every replicated volume survived all four version changes.

The review also records what is still missing, including image signing, a published API stability policy and an aggregate NOTICE file. Each gap is tracked in the open.

A summary of the review, with the measurements and the open items, is on the General Technical Review page.

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