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Pruning for Custom Resources #2332

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shekhar-rajak opened this issue Jan 26, 2021 · 6 comments
Closed
4 tasks

Pruning for Custom Resources #2332

shekhar-rajak opened this issue Jan 26, 2021 · 6 comments
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lifecycle/rotten Denotes an issue or PR that has aged beyond stale and will be auto-closed. sig/api-machinery Categorizes an issue or PR as relevant to SIG API Machinery.

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@shekhar-rajak
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shekhar-rajak commented Jan 26, 2021

Enhancement Description

  • One-line enhancement description (can be used as a release note): Pruning for Custom Resources

  • Kubernetes Enhancement Proposal:

CustomResources store arbitrary JSON data without following the typical Kubernetes API behaviour to prune unknown fields. This makes CRDs different, but also leads to security and general data consistency concerns because it is unclear what is actually stored in etcd.

This KEP proposes to add pruning of all fields which are not specified in the OpenAPI validation schemas given in the CRD.

Pruning will be opt-in in v1beta1 of apiextensions.k8s.io via

apiVersion: apiextensions.k8s.io/v1beta1
kind: CustomResourceDefinition
spec:
  preserveUnknownFields: false
  ...

i.e. CRDs created in v1beta1 default to disabled pruning.

Pruning will be enabled for every CRD created in v1 and we will hide preserveUnknownFields in v1 in that case.

Pruning can be disabled for subtrees of CustomResources by setting the x-kubernetes-preserve-unknown-fields: true vendor extension. This allows to store arbitrary JSON or RawExtensions. This will even be possible at the root level, even in v1. Adding that in every to each object in a schema leads to the old behaviour.

Pruning requires structural schemas (as described in KEP Vanilla OpenAPI Subset: Structural Schema) for all defined versions. Validation will reject the CRD with preserveUnknownFields: false otherwise.

  • Discussion Link:

  • Primary contact (assignee): @sttts

  • Responsible SIGs: sig-api-machinery

  • Enhancement target (which target equals to which milestone):

    • Alpha release target (x.y):
    • Beta release target (x.y):
    • Stable release target (x.y):
  • Alpha

    • KEP (k/enhancements) update PR(s):
    • Code (k/k) update PR(s):
    • Docs (k/website) update PR(s):

Please keep this description up to date. This will help the Enhancement Team to track the evolution of the enhancement efficiently.

@k8s-ci-robot k8s-ci-robot added the needs-sig Indicates an issue or PR lacks a `sig/foo` label and requires one. label Jan 26, 2021
@shekhar-rajak
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shekhar-rajak commented Jan 26, 2021

#2331 created for migrating the old keps into new template.

@LappleApple
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LappleApple commented Apr 8, 2021

/sig api-machinery

@k8s-ci-robot k8s-ci-robot added sig/api-machinery Categorizes an issue or PR as relevant to SIG API Machinery. and removed needs-sig Indicates an issue or PR lacks a `sig/foo` label and requires one. labels Apr 8, 2021
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fejta-bot commented Jul 7, 2021

Issues go stale after 90d of inactivity.
Mark the issue as fresh with /remove-lifecycle stale.
Stale issues rot after an additional 30d of inactivity and eventually close.

If this issue is safe to close now please do so with /close.

Send feedback to sig-contributor-experience at kubernetes/community.
/lifecycle stale

@k8s-ci-robot k8s-ci-robot added the lifecycle/stale Denotes an issue or PR has remained open with no activity and has become stale. label Jul 7, 2021
@k8s-triage-robot
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k8s-triage-robot commented Aug 6, 2021

Stale issues rot after 30d of inactivity.
Mark the issue as fresh with /remove-lifecycle rotten.
Rotten issues close after an additional 30d of inactivity.

If this issue is safe to close now please do so with /close.

Send feedback to sig-contributor-experience at kubernetes/community.
/lifecycle rotten

@k8s-ci-robot k8s-ci-robot added lifecycle/rotten Denotes an issue or PR that has aged beyond stale and will be auto-closed. and removed lifecycle/stale Denotes an issue or PR has remained open with no activity and has become stale. labels Aug 6, 2021
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k8s-triage-robot commented Sep 5, 2021

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

This bot triages issues and PRs according to the following rules:

  • After 90d of inactivity, lifecycle/stale is applied
  • After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
  • After 30d of inactivity since lifecycle/rotten was applied, the issue is closed

You can:

  • Reopen this issue or PR with /reopen
  • Mark this issue or PR as fresh with /remove-lifecycle rotten
  • Offer to help out with Issue Triage

Please send feedback to sig-contributor-experience at kubernetes/community.

/close

@k8s-ci-robot
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k8s-ci-robot commented Sep 5, 2021

@k8s-triage-robot: Closing this issue.

In response to this:

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

This bot triages issues and PRs according to the following rules:

  • After 90d of inactivity, lifecycle/stale is applied
  • After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
  • After 30d of inactivity since lifecycle/rotten was applied, the issue is closed

You can:

  • Reopen this issue or PR with /reopen
  • Mark this issue or PR as fresh with /remove-lifecycle rotten
  • Offer to help out with Issue Triage

Please send feedback to sig-contributor-experience at kubernetes/community.

/close

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