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Switch alpha Pod ephemeralcontainers API to use Pod kind #101034

Merged
merged 3 commits into from Apr 22, 2021
Merged

Switch alpha Pod ephemeralcontainers API to use Pod kind #101034

merged 3 commits into from Apr 22, 2021

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@verb verb commented Apr 12, 2021 •
edited by liggitt

What type of PR is this?

/kind feature
/kind api-change
/sig auth
/priority important-longterm

What this PR does / why we need it:

This changes the /ephemeralcontainers subresource of /pods to use the Pod kind rather than EphemeralContainers.

When designing this API initially it seemed preferable to create a new kind containing only the pod's ephemeral containers, similar to how binding and scaling work.

It later became clear that this made admission control more difficult because the controller wouldn't be presented with the entire Pod, so we updated this to operate on the entire Pod, similar to how /status works.

This change is described in more detail in KEP-277 update kubernetes/enhancements#2618.

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?

The `pods/ephemeralcontainers` API now returns and expects a `Pod` object instead of `EphemeralContainers`. This is incompatible with the previous alpha-level API.

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

- [KEP]: https://git.k8s.io/enhancements/keps/sig-node/277-ephemeral-containers

@k8s-ci-robot k8s-ci-robot added do-not-merge/work-in-progress Indicates that a PR should not merge because it is a work in progress. release-note Denotes a PR that will be considered when it comes time to generate release notes. labels Apr 12, 2021
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Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

@k8s-ci-robot k8s-ci-robot added kind/feature Categorizes issue or PR as related to a new feature. size/L Denotes a PR that changes 100-499 lines, ignoring generated files. kind/api-change Categorizes issue or PR as related to adding, removing, or otherwise changing an API sig/auth Categorizes an issue or PR as relevant to SIG Auth. priority/important-longterm Important over the long term, but may not be staffed and/or may need multiple releases to complete. cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. needs-triage Indicates an issue or PR lacks a `triage/foo` label and requires one. labels Apr 12, 2021
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@verb: This issue is currently awaiting triage.

If a SIG or subproject determines this is a relevant issue, they will accept it by applying the triage/accepted label and provide further guidance.

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verb commented Apr 12, 2021

/test all

@k8s-ci-robot k8s-ci-robot added area/kubectl area/test sig/api-machinery Categorizes an issue or PR as relevant to SIG API Machinery. sig/apps Categorizes an issue or PR as relevant to SIG Apps. sig/cli Categorizes an issue or PR as relevant to SIG CLI. sig/testing Categorizes an issue or PR as relevant to SIG Testing. labels Apr 12, 2021
@verb
Switch ephemeralcontainers SR to Pod Kind
d22dc5c 
This changes the `/ephemeralcontainers` subresource of `/pods` to use
the `Pod` kind rather than `EphemeralContainers`.

When designing this API initially it seemed preferable to create a new
kind containing only the pod's ephemeral containers, similar to how
binding and scaling work.

It later became clear that this made admission control more difficult
because the controller wouldn't be presented with the entire Pod, so we
updated this to operate on the entire Pod, similar to how `/status`
works.
@verb
Generated code for Pod-based ephemeralcontainers
d8ee5ab
@verb verb mentioned this pull request Apr 13, 2021
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/remove-sig api-machinery
/cc @liggitt

@k8s-ci-robot k8s-ci-robot removed the sig/api-machinery Categorizes an issue or PR as relevant to SIG API Machinery. label Apr 13, 2021
@liggitt liggitt self-assigned this Apr 15, 2021
@liggitt liggitt added this to Assigned in API Reviews Apr 15, 2021
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liggitt commented Apr 15, 2021

one comment, lgtm otherwise. should wait for kubernetes/enhancements#2618 before merging

@liggitt liggitt moved this from Assigned to API review completed, 1.22 in API Reviews Apr 15, 2021
@liggitt liggitt added this to the v1.22 milestone Apr 15, 2021
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/remove-sig api-machinery

@k8s-ci-robot k8s-ci-robot removed the sig/api-machinery Categorizes an issue or PR as relevant to SIG API Machinery. label Apr 15, 2021
@verb
Address feedback for new /ephemeralcontainers API
97726a5 
* Use deep copies in `PrepareForUpdate()`
* Preserve select metadata from new pod
* Use patch to add ephemeral container `kubectl debug`
* Distinguish between pod vs /ephemeralcontainers NotFound
@k8s-ci-robot k8s-ci-robot added the sig/api-machinery Categorizes an issue or PR as relevant to SIG API Machinery. label Apr 16, 2021
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verb commented Apr 16, 2021

/hold
until kubernetes/enhancements#2618 merges

@k8s-ci-robot k8s-ci-robot added the do-not-merge/hold Indicates that a PR should not merge because someone has issued a /hold command. label Apr 16, 2021
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verb commented Apr 16, 2021

/retest

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/remove-sig api-machinery

@k8s-ci-robot k8s-ci-robot removed the sig/api-machinery Categorizes an issue or PR as relevant to SIG API Machinery. label Apr 20, 2021
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verb commented Apr 21, 2021

kubernetes/enhancements#2618 has merged
/remove-hold

@k8s-ci-robot k8s-ci-robot removed the do-not-merge/hold Indicates that a PR should not merge because someone has issued a /hold command. label Apr 21, 2021
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liggitt commented Apr 22, 2021

/lgtm
/approve

@k8s-ci-robot k8s-ci-robot added the lgtm "Looks good to me", indicates that a PR is ready to be merged. label Apr 22, 2021
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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: liggitt, verb

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@k8s-ci-robot k8s-ci-robot added the approved Indicates a PR has been approved by an approver from all required OWNERS files. label Apr 22, 2021
@k8s-ci-robot k8s-ci-robot merged commit 972ee2d into kubernetes:master Apr 22, 2021
@verb verb deleted the 1.22-ec-api branch April 22, 2021 14:12
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api-review Categorizes an issue or PR as actively needing an API review. approved Indicates a PR has been approved by an approver from all required OWNERS files. area/kubectl area/test cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. kind/api-change Categorizes issue or PR as related to adding, removing, or otherwise changing an API kind/feature Categorizes issue or PR as related to a new feature. lgtm "Looks good to me", indicates that a PR is ready to be merged. needs-triage Indicates an issue or PR lacks a `triage/foo` label and requires one. priority/important-longterm Important over the long term, but may not be staffed and/or may need multiple releases to complete. release-note Denotes a PR that will be considered when it comes time to generate release notes. sig/apps Categorizes an issue or PR as relevant to SIG Apps. sig/auth Categorizes an issue or PR as relevant to SIG Auth. sig/cli Categorizes an issue or PR as relevant to SIG CLI. sig/testing Categorizes an issue or PR as relevant to SIG Testing. size/XL Denotes a PR that changes 500-999 lines, ignoring generated files.
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