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fix(vm-default-images,kubernetes-worker-image,vm-disk): wait for golden images to import and refuse cloning a failed one - #4392
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Included review availability: This review used your included allowance. Your plan provides up to 8 included reviews per hour; 6 remain after this review. 📝 WalkthroughWalkthroughThe two golden-image package sources now define DataVolume health checks. Package documentation describes readiness and retry behavior. vm-disk rejects a new image-backed disk when its referenced golden DataVolume is Failed. ChangesGolden-image imports
Priority: ➖ Normal Estimated code review effort: 3 (Moderate) | ~25 minutes Change: Bug fix · Severity of issue fixed: Medium Merge Risk: ⚪ Minimal · up to The change gates golden-image readiness and prevents new disks from using failed imports. No material merge risk is established in the supplied context; proceed with normal checks. Architecture SummaryArchitecture risk: 🔵 Low · up to The change affects 4 systems. Changed systems: Architecture concerns Review detailsSystems and components
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This gates the vm-default-images package's Ready condition on every golden-image DataVolume reaching Succeeded, and the wiring is right: the has(status.phase) guard avoids a CEL error on a DataVolume that has no status yet, the CRD schema carries healthCheckExprs, and both the Go and helm-unittest suites pass. Two things hold me back from approving, and both are about scope and the open question you already flagged rather than a defect in the code you wrote.
The gate moves the package's status but does not close the hazard the commit message names. imageProvider still lists any vm-default-images-* PVC in cozy-public by name with no look at the DataVolume phase, and vm-disk clones from the selected PVC unconditionally. So a user can still pick and clone from a half-imported or Failed golden image after this change; what moves is the Package/HelmRelease Ready condition, not the clone path. The status accuracy is a real improvement, but the "surfaced later on a clone" failure is still reachable.
On your open design question, whether one broken image should block the whole collection: as written it does, and with no way out on its own. CustomHealthCheck is keyed only by apiVersion and kind, so the single expression runs against all 16 DataVolumes, and any one that never reaches Succeeded parks the aggregate Ready with no per-component timeout and an uncapped 30s RetryOnFailure. Ten of the sixteen default URLs point at mutable *-latest* paths, so an upstream removal is not hypothetical. The blast radius is contained: nothing dependsOn cozystack.vm-default-images, and it is not in the default bundle or the e2e set, so this is a confusing perpetual NotReady for that one opt-in package rather than a platform-wide stall. You documented the behavior honestly in the comment. The question is whether per-image granularity or a timeout is worth adding before this ships.
| # timeout, so a slow download outlasts the operator-wide install | ||
| # window and is retried as an upgrade until it finishes; nothing | ||
| # is uninstalled in between. | ||
| healthCheckExprs: |
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[MINOR] Gate changes readiness status but does not prevent cloning from an unfinished or Failed image
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Partly fixed in 5cc9052. vm-disk now refuses a new disk on a golden in phase Failed, packages/apps/vm-disk/templates/dv.yaml:21, but an importer that keeps retrying without reaching Failed still leaves the new disk waiting, as the description says.
| healthCheckExprs: | ||
| - apiVersion: cdi.kubevirt.io/v1beta1 | ||
| kind: DataVolume | ||
| failed: "has(status.phase) && status.phase == 'Failed'" |
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[MINOR] One never-Succeeded image parks the whole 16-image bundle NotReady with no timeout or retry cap
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Kept on purpose. A group/kind health check can't single out one image, and a per-component timeout would be an API change for one opt-in package; the comment at packages/core/platform/sources/vm-default-images.yaml:23 and the chart's values.yaml say so.
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Review comments at @packages/core/platform/sources/vm-default-images.yaml:
- Around line 29-33: Update the vm-default-images DataVolume template to render
the helm.sh/resource-policy: keep annotation on each DataVolume, preserving
imported volumes when Helm uninstalls a failed release during retries.
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internal/operator/package_reconciler_test.gopackages/apps/vm-disk/templates/dv.yamlpackages/apps/vm-disk/tests/dv_golden_image_test.yamlpackages/core/platform/sources/kubernetes-worker-image.yamlpackages/core/platform/sources/vm-default-images.yamlpackages/core/platform/tests/sources_golden_images_healthcheck_test.yamlpackages/system/kubernetes-worker-image/values.yamlpackages/system/vm-default-images/values.yaml
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IvanHunters vm-disk now refuses a new disk whose golden image has phase Failed, the same check the worker pools already have. A golden that is still importing is fine as is, CDI holds the clone until the source is populated. Existing disks are exempt, so a golden that fails later does not break their upgrades. On the open question I kept blocking. A group/kind health check cannot do per-image granularity, and a component timeout is an API change for one opt-in package. Both catalogs' |
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IvanHunters A new vm-disk now fails to render on a golden in phase Failed, and the error names the image. A golden that is still importing is fine, CDI holds the clone until the source is populated. Two gaps stay open: a golden that stalls without reaching Failed still leaves a new disk waiting, and a missing golden is #4548. The image picker also still offers a Failed golden (#4553), so the refusal comes on create, not on pick. I kept the whole-catalog block with no timeout. A Failed DataVolume ends each attempt at once, but a stalled import keeps one of the system helm-controller's five slots busy about 95% of the time until it imports or leaves the list, and the body now says so. |
Every image is a DataVolume with immediate bind, so its import starts at install, but nothing waited for it: the HelmRelease went Ready as soon as helm applied the DataVolumes. An image that failed or stalled left the component green, and the failure surfaced later on a vm-disk cloning from it, far from the cause. Gate the release on the DataVolume phase. Only Succeeded counts as ready, and a Failed phase, when CDI sets one, ends the wait at once. Every other phase, and a missing status, keeps the wait open until the install window expires. There is no per-component timeout, so a download longer than that window is retried as an upgrade until it finishes, and the retry strategy never uninstalls the volumes. Signed-off-by: Aleksei Sviridkin <[email protected]> Assisted-by: LLM
The Talos worker image catalog renders its goldens the same way the VM image collection does: DataVolumes with immediate bind whose import starts at install. With no health check the release went Ready as soon as helm applied them, so a golden that never imported left the catalog green. Gate it on the DataVolume phase with the same expressions. Worker pools read each golden directly and do not wait on the catalog status, so the gate changes what the status reports and delays no pool. Assisted-by: LLM Signed-off-by: Aleksei Sviridkin <[email protected]>
A disk with source.image clones a golden from cozy-public without looking at it. When that golden's import has failed, CDI never populates it, so the clone waits forever and the new disk sits pending with nothing pointing at the image. Fail the render instead when the golden's phase is Failed, naming the image. A golden still importing is left alone because CDI holds the clone until the source is populated. An existing disk is exempt: its DataVolume spec is immutable, so failing the render cannot rescue it and would only block its upgrades. Signed-off-by: Aleksei Sviridkin <[email protected]> Assisted-by: LLM
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Verdict
LGTM with non-blocking notes.
Both halves hold up under render, unit tests, and mutation. The two catalog releases now gate on their golden DataVolumes reaching Succeeded/Failed, and vm-disk refuses a new clone of a golden whose import Failed, on the not $existingDV branch only, so existing disks and their upgrades are left alone. The notes below are acknowledged tradeoffs, not defects.
Re-checked against current origin/main (9c9a8c2): none of this PR's source files were touched on main since the branch base, and no test added on main since then references these packages, so merging introduces no cross-main test break.
Still open from my earlier rounds
Both concerns from my previous round are resolved:
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The clone path from a failed golden is now closed.
vm-diskrefuses a new disk whose golden DataVolume is phaseFailed, with an error that names the image and the remedy. The guard is inert underhelm templateand when the golden is absent (lookup returns empty), matching the existingkubernetes-nodescross-namespace lookup precedent. The remaining cases (a golden still importing, or absent) are held by CDI or tracked separately by the author; they are not refused here by design. -
One dead image parking the whole catalog not-Ready with no timeout is unchanged, and the author now documents it as a deliberate tradeoff in both
values.yaml. The blast radius is contained: both packages are opt-in and nothingdependsOneither, so this is a confusing perpetual not-Ready on one opt-in package, not a platform-wide stall. Accepted as non-blocking.
Non-blocking notes
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On upgrade, an existing cluster that already carries a long-dead golden will see the catalog flip Ready to not-Ready and retry roughly every 30s. This is the intended correction of a status that previously read green over a failed import, not a regression, but it is a visible behaviour change on existing installs and worth an upgrade note or changelog entry.
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The prose "reports Ready only once every image has imported" is precise only at install/upgrade time. Flux evaluates
healthCheckExprsduring the Helm action, not on an idle reconcile, so a golden deleted after the release went Ready leaves the package green until the next chart or values change. The wording inkubernetes-worker-image.yaml("stops the catalog reporting green over an import that never finished") is closer. -
The platform helm-unittest and the Go test pin the expression text, not evaluated behaviour, so a semantically-equivalent rewrite reddens them while a semantically-wrong but textually-equal change would not. The vm-disk guard, by contrast, has behavioural coverage (verified by mutation). A per-phase case once a flux-CEL harness exists would pin the matrix the gate currently argues from flux's evaluator.
| # Ready only once every image has imported, so the status says | ||
| # whether the collection is actually there. Any phase other than | ||
| # Succeeded or Failed matches neither expression and flux keeps | ||
| # waiting. There is no per-component timeout: a download that |
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[MINOR] Upgrade flips an existing opt-in catalog Ready->NotReady with a ~30s retry cadence; worth an upgrade note
On an existing cluster already carrying a long-dead golden, upgrading to this version flips the catalog HelmRelease Ready->NotReady and retries about every 30s (RetryOnFailure with no cap). This is the intended correction of a status that used to read green over a failed import, not a regression, but it is a visible behaviour change on existing installs with event/revision churn. Consider a changelog or upgrade note. Same applies to kubernetes-worker-image.yaml.
| ## | ||
| ## @section Global Golden Image Collection | ||
| ## | ||
| ## The package reports Ready only once every image below has imported. One image |
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[MINOR] "reports Ready only once every image has imported" holds only at install/upgrade time
Flux evaluates healthCheckExprs during the Helm install/upgrade action, not on an idle periodic reconcile, so a golden deleted after the release already went Ready leaves the package green until the next chart or values change. The kubernetes-worker-image.yaml wording ("stops the catalog reporting green over an import that never finished") is more accurate.
| - apiVersion: cdi.kubevirt.io/v1beta1 | ||
| kind: DataVolume | ||
| failed: "has(status.phase) && status.phase == 'Failed'" | ||
| current: "has(status.phase) && status.phase == 'Succeeded'" |
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[NIT] Gate tests pin expression text, not evaluated behaviour
This suite and the Go TestGoldenImageHelmReleasesWaitForImport compare the expression strings (equal / DeepEqual), so a semantically-equivalent rewrite reddens them and a semantically-wrong but textually-identical change would not be caught. The vm-disk guard has behavioural coverage; the gate does not, because the repo has no flux-CEL evaluator harness yet.
<!-- Thank you for making a contribution! Here are some tips for you: - Use Conventional Commits for the PR title: `type(scope): description` - Types: feat, fix, docs, style, refactor, perf, test, build, ci, chore - Scopes are not an exhaustive list — pick the most specific scope for the change and extend the list when a genuinely new area appears. Examples: - System components: dashboard, platform, operator, cilium, kube-ovn, linstor, fluxcd, cluster-api - Managed apps: postgres, mariadb, redis, kafka, clickhouse, virtual-machine, kubernetes - Development and maintenance: api, hack, tests, ci, docs, maintenance - Breaking changes: append `!` after type/scope (`feat(api)!: ...`) or add a `BREAKING CHANGE:` footer - If it's a work in progress, consider creating this PR as a draft. - Don't hesistate to ask for opinion and review in the community chats, even if it's still a draft. - Add the label `kind/backport` if it's a bugfix that needs to be backported to a previous version. --> ## What this PR does Stacked on #4392, so the base is `fix/vm-default-images-health-check`. Retarget to `main` once #4392 merges. A new vm-disk with `source.image` now fails to render when the golden image it names does not exist, and the error names the image and `cozy-public`. Before this the chart cloned `cozy-public/vm-default-images-<name>` without looking, and CDI waited for that PVC forever while the VMDisk stayed Ready. That happens on a typo, and on every cluster where the opt-in `cozystack.vm-default-images` package is off, so the message also says to add it to `bundles.enabledPackages`. The golden counts as missing only when neither its DataVolume nor its PVC exists. CDI clones the PVC, so a PVC with no DataVolume is still a usable source, and a DataVolume whose PVC is not created yet is an import about to start. Under `helm template` every lookup is empty, so the check runs only when the release namespace itself is visible. The same trick is already used in the kubernetes and seaweedfs charts. Existing disks are exempt the same way #4392 exempts them, because their DataVolume spec is immutable. A disk refused while the catalog is off renders by itself once the golden appears, since app HelmReleases retry on failure. Tests are in `packages/apps/vm-disk/tests/dv_golden_image_test.yaml`: refusal of a missing golden, a PVC without a DataVolume, a DataVolume before its PVC, rendering with no cluster, and an existing disk whose golden was removed. Closes #4548 ### Screenshots <!-- REQUIRED for UI changes: attach screenshots or screen recordings demonstrating the visual impact of your changes. PRs with UI changes without screenshots will not be merged. --> No UI change. ### Downstream repositories <!-- Cozystack is upstream for repositories that are NOT kept in sync with it automatically, and nothing in CI compares the two sides, so a change here can break them silently. Which change forces what, and which file to touch, is the trigger map in docs/agents/contributing.md under "Downstream Repositories". Walk it before you tick anything. IF YOU ARE AN AI AGENT OR AN LLM, THIS IS PART OF THE TASK, NOT A FORM TO FILL IN: 1. Walk the trigger map against the actual diff of this PR, file by file. Do not decide from the PR title or from your memory of what you changed. 2. For every repository you tick, open the follow-up PR there and link it on the same line. A ticked box with no link claims work that does not exist, which is worse than an empty box. Search that repository for an open PR or issue covering it first, and link that instead of filing a duplicate. 3. When the follow-up is out of scope, or needs a decision that is not yours to make, open an issue in that repository instead, link that, and say so in the PR body. Do not push a speculative PR into another repository just to fill a line here. 4. Do not tick "No downstream repository is affected" to make the checklist go away. 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What this PR does
Both golden image catalogs,
vm-default-imagesandkubernetes-worker-image, went Ready before any image had imported. Each one renders a DataVolume per image with immediate bind, so every import starts at install, but neither PackageSource hadhealthCheckExprs. The HelmRelease went Ready as soon as helm applied the DataVolumes, and an image that failed or stalled stayed green.This PR makes both releases wait for the imports. Each component's
install:block now has a DataVolume health check.currentholds only onSucceeded, andfailedholds onFailed. Any other phase,Unknownincluded, matches neither, and flux keeps waiting. A DataVolume with nostatuskey makes the CEL evaluation error out. Flux reports that as Unknown and keeps waiting too.The other settled phases are safe to treat as not ready for these charts.
PendingPopulationandWaitForFirstConsumerare where a volume waits for a consumer, and immediate bind removes that wait.UploadReadyandPausedbelong to upload and multi-stage sources, and both charts render onlysource.http.There is no per-component timeout, so I did not set one. The window is the operator-wide
--helmrelease-install-timeout, 10m by default. The operator setsRetryOnFailureon both install and upgrade, so a download that outlasts the window is retried as an upgrade until the import finishes. Nothing uninstalls the DataVolumes in between, and the import keeps running.One image that never imports keeps its whole catalog not Ready until the image imports or its entry is removed. There is no time limit, and I kept it that way on purpose. A group/kind health check cannot tell one image from another, so it cannot be made per image. A per-component timeout would be an API change for one opt-in package. Both charts'
values.yamldocument this. Nothing onmainlists either package independsOn, and the images that did import stay usable in the meantime. Tenant worker pools look up each golden directly and never wait on the catalog's status.The price is a helm-controller slot. The operator labels the generated HelmRelease with
cozystack.io/package, pluscozystack.io/privilegedwhen privileged. The flux-shard-operator acts only on HelmReleases that already carrysharding.fluxcd.io/key. So both catalogs go to the system helm-controller, which picks up releases without that key and runs with--concurrent=5. A DataVolume inFailedends each attempt at once and costs next to nothing. An import that stalls without reachingFailedis the expensive case, for example an importer that keeps retrying an unreachable URL. Each attempt waits out the full window, and the next one starts 30s later. So one of those five slots stays busy about 95% of the time for as long as the image is stuck. #4145 describes the same cost on the shard controllers.The status change alone does not protect a vm-disk, because vm-disk clones from a golden without checking it. A golden still importing is fine, since CDI holds the clone until the source is populated. A golden whose import has Failed is never populated, so the clone would wait forever. vm-disk now refuses to render a new disk on a Failed golden and names the image. This matches the check the worker pools already have. A disk that already exists is exempt, so a golden that fails later does not break that disk's upgrades. The check fires only when CDI sets Failed, and at CDI v1.66.1 an import reaches Failed only on a checksum mismatch. The goldens carry no checksum, so a broken URL keeps the importer retrying and the new disk still waits, with only the catalog's not-Ready status pointing at the image. #4564 tracks that gap. A golden that does not exist at all is a separate gap, tracked in #4548.
Tests pin the expressions for both catalogs. A helm-unittest case checks them on the rendered PackageSource. A Go test builds the HelmRelease spec from the shipped file and checks that they arrive with the poller wait strategy. The repo has no harness that evaluates flux CEL, so the phase behaviour above is argued from flux's evaluator and not exercised by a test. The vm-disk check has helm-unittest cases for a Failed, a Succeeded, and a still-importing golden, for a render with no cluster, and for an existing disk.
Closes #4169
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