fix(kamaji): drop any subchart nested under the vendored kamaji chart by lexfrei · Pull Request #4459 · cozystack/cozystack

Aleksei Sviridkin (lexfrei) · 2026-09-24T20:17:11Z

What this PR does

A subchart nested under the vendored kamaji chart would deploy no matter what the values say, so this PR removes that directory in make update and adds a test that fails if anything renders from it. The vendored chart declares a kamaji-etcd dependency gated on kamaji-etcd.deploy, and the subchart itself is not vendored. The issue proposed pinning kamaji-etcd.deploy: false in the package values. I tested that, and it would not have helped: through this package the condition is never evaluated at all.

Helm skips the condition because the umbrella chart declares no dependencies. processDependencyEnabled returns immediately when the chart it starts from has no dependencies in its Chart.yaml, and cozy-kamaji has none. The vendored kamaji chart is loaded from charts/ without being declared, so Helm never recurses into it and never reads its kamaji-etcd.deploy condition. The same early return is in Helm v3 and v4. I put kamaji-etcd-0.15.0.tgz into charts/kamaji/charts/ and rendered the package three ways:

default values: StatefulSet, Job, DataStore and four Certificates from kamaji-etcd
kamaji.kamaji-etcd.deploy: false in the package values: the same etcd
deploy: false edited into the vendored charts/kamaji/values.yaml: the same etcd

Rendering charts/kamaji on its own with kamaji-etcd.deploy=false renders no etcd, which confirms the umbrella is what skips the condition. So any chart that ends up under charts/kamaji/charts/ deploys whatever the values say, and no values change can close the hazard.

This PR changes two things:

make update removes charts/kamaji/charts after extracting the upstream chart. Upstream does not ship that directory today, so the recipe still reproduces the current tree exactly. I checked that by running it on a copy of the package. I also ran it against a fake upstream tarball that carried the subchart: the directory was extracted and then removed.
The package gets its first helm-unittest suite. It asserts that no template of a subchart nested under charts/kamaji/charts/ renders a document, and a test target lets hack/helm-unit-tests.sh pick it up in make unit-tests. With the subchart tgz dropped in, the suite fails. With the rm line removed from the recipe, the fake-upstream update leaves the tgz behind and the suite fails too. /tests is anchored in .helmignore, so the packaged chart's file list is unchanged.

I left the kamaji-etcd block in the vendored values alone. It is not quite dead: certmanager_issuer.yaml reads it to decide whether to keep the self-signed issuer. That only matters when certManager.issuerRef.name is set, and this package does not set it. helm template output is byte-identical to main.

Closes #4397

Screenshots

Not a UI change.

Downstream repositories

The change touches only the kamaji package's update recipe, its test suite and its .helmignore. The closest trigger is package Makefiles → the website's development.md, but that page describes make update and make test in general terms that still hold, and the rendered chart is unchanged.

Release note

fix(kamaji): `make update` now drops any subchart nested under the vendored kamaji chart, and a unit test fails if one appears, because such a subchart (for example the bundled kamaji-etcd) would deploy regardless of `kamaji-etcd.deploy`.

Summary by CodeRabbit

Bug Fixes
- Helm chart updates now avoid including nested charts that could deploy unexpectedly.
- Helm chart packages exclude test files, keeping them out of distributed chart artifacts.
Tests
- Added a chart check to verify nested charts render no resources.

The vendored kamaji chart declares a kamaji-etcd dependency gated on kamaji-etcd.deploy. That condition is never evaluated here: Helm's processDependencyEnabled returns before recursing when the chart it starts from declares no dependencies, and this umbrella declares none. A chart placed under charts/kamaji/charts would therefore render whatever the values say, deploying an etcd nobody asked for. Upstream does not ship that directory today, so the update recipe produces the same tree as before; removing it after extraction keeps it that way if upstream ever starts committing the packaged subchart. Assisted-by: LLM Signed-off-by: Aleksei Sviridkin <[email protected]>

A subchart under charts/kamaji/charts deploys unconditionally through this umbrella, so the suite asserts that no template there produces a document. It is the package's first helm-unittest suite, so the Makefile gains the test target the repository sweep discovers, and the suite directory is kept out of the packaged chart. Assisted-by: LLM Signed-off-by: Aleksei Sviridkin <[email protected]>

coderabbitai · 2026-09-24T20:17:45Z

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📝 Walkthrough

Walkthrough

The Kamaji package update removes nested charts. A Helm test checks that nested chart templates render no documents. The Makefile adds a test target, and .helmignore excludes the tests directory from chart packaging.

Changes

Chart packaging and validation

Layer / File(s)	Summary
Update and validate chart packaging `packages/system/kamaji/Makefile`, `packages/system/kamaji/tests/*`, `packages/system/kamaji/.helmignore`	The update target removes the nested charts directory. A Helm test checks that nested chart templates render zero documents. The Makefile adds a target to run Helm tests, and `.helmignore` excludes the tests directory.

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Bug fix

Merge Risk: 🔵 Low · up to dd1fb

The chart update removes nested subcharts, but the new test could miss a future nested template. This is a bounded coverage gap to fix or accept before merging.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly describes the main change: removing nested subcharts from the vendored Kamaji chart.
Linked Issues check	✅ Passed	The changes address issue `#4397`. The `update` target removes `charts/kamaji/charts` after extraction and patching, so a future update does not retain `kamaji-etcd` as a deployable nested chart. The `n…
Out of Scope Changes check	✅ Passed	The changes remain within issue `#4397`. The Makefile update prevents nested subchart vendoring. The Helm unittest checks that prevention. The `test` path is excluded from packaged charts with `.helmign…
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…

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Actionable comments posted: 1

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Inline comments:
In `@packages/system/kamaji/tests/nested_subchart_test.yaml`:
- Line 6: Update the template selector in the nested-subchart test to use a
recursive pattern so it also selects files under nested template directories;
preserve the existing chart and template scope.

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📥 Commits

Reviewing files that changed from the base of the PR and between 564f540 and dd1fbf9.

📒 Files selected for processing (3)

packages/system/kamaji/.helmignore
packages/system/kamaji/Makefile
packages/system/kamaji/tests/nested_subchart_test.yaml

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IvanHunters

LGTM

A guardrail, nothing more. The nested subchart is already gone from both the merge base (564f540) and the head (dd1fbf9), so this PR removes no vendored content. It changes the update recipe, adds a helm-unittest suite, and ignores tests/ at package time. None of that is rendered, so helm template of cozy-kamaji comes out identical and existing installs upgrade with zero manifest churn.

I reproduced the mechanism the comment describes. Put a kamaji-etcd chart back under charts/kamaji/charts/ and cozy-kamaji still renders its StatefulSet, even with --set kamaji-etcd.deploy=false and --set kamaji.kamaji-etcd.deploy=false. The parent declares no dependencies, so Helm never evaluates the subchart condition, and a vendored subchart cannot be switched off. Deleting it outright is the right call, and cozystack sets no kamaji-etcd values in the first place (tenant control planes run on managed DataStores), so the subchart really is dead weight.

The test is worth keeping. I dropped a dummy subchart back in with a template at templates/, then at templates/sub/, then at templates/a/b/, and the suite caught all three. make unit-tests picks it up, since the test target resolves to helm unittest . like the sibling packages, so CI actually runs it. Checked against helm-unittest 1.0.3.

Non-blocking notes:

[NIT] charts/kamaji/Chart.yaml + charts/kamaji/Chart.lock: once the recipe runs rm -rf charts/kamaji/charts, the vendored chart still lists the kamaji-etcd dependency and the lock still pins kamaji-etcd 0.15.0 with no chart behind them. Harmless on the render path, just inconsistent inside the tree.
[NIT] tests/nested_subchart_test.yaml: the suite renders with default values and only looks at templates/, so a reintroduced subchart that ships resources only through crds/, or renders nothing by default, would slip past. The rm wipes any nested subchart wholesale, so this is an edge of the coverage, not a hole in it.

On the earlier suggestion to make the selector recursive: charts/kamaji/charts/*/templates/* already matches templates at any depth in helm-unittest 1.0.3. The templates/sub/ and templates/a/b/ cases above both fail as expected, so there's nothing to change there.

Aleksei Sviridkin (lexfrei) added 2 commits September 24, 2026 23:11

Aleksei Sviridkin (lexfrei) requested review from IvanHunters, Andrei Kvapil (kvaps), Timofei Larkin (lllamnyp), mattia-eleuteri, myasnikovdaniil and Kirill Ilin (sircthulhu) as code owners September 24, 2026 20:17

github-actions Bot added size/S This PR changes 10-29 lines, ignoring generated files area/kamaji Issues or PRs related to Kamaji (hosted control planes for tenant Kubernetes) kind/bug Categorizes issue or PR as related to a bug labels Sep 24, 2026

coderabbitai Bot reviewed Sep 24, 2026

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Comment thread packages/system/kamaji/tests/nested_subchart_test.yaml

IvanHunters mentioned this pull request Sep 25, 2026

test(e2e): hold the wait-budget guard to a start margin across four suites #4468

Merged

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IvanHunters approved these changes Oct 5, 2026

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IvanHunters merged commit 0639ce3 into main Oct 5, 2026
22 of 23 checks passed

IvanHunters deleted the fix/kamaji-etcd-dead-values branch October 5, 2026 12:14

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fix(kamaji): drop any subchart nested under the vendored kamaji chart - #4459

fix(kamaji): drop any subchart nested under the vendored kamaji chart#4459
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Aleksei Sviridkin (lexfrei) commented Sep 24, 2026 •

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