Release KEDA 2.21.0

[wozniakjan]

see also: kedacore/keda#7812

[coderabbitai]

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📝 Walkthrough

Walkthrough

The chart version changes to 2.21.0. The compatibility note and embedded Kubernetes schema are updated. Both CI workflows update their Kubernetes test matrices to cover versions 1.34 through 1.36.

Changes

KEDA 2.21 Kubernetes compatibility updates

Layer / File(s)	Summary
Chart version and compatibility baseline keda/Chart.yaml, README.md, keda/templates/NOTES.txt	The chart and app versions change to 2.21.0. The Kubernetes warning threshold changes to 1.34, and the Helm search example shows version 2.21.0.
Embedded Kubernetes schema updates keda/templates/crds/crd-scaledjobs.yaml	The embedded schema adds PodGroup resource-claim and schedulingGroup descriptions. It removes workloadRef and revises descriptions for ProcMount, hostUsers, OCI image volumes, and Portworx migration.
Kubernetes CI matrix updates .github/workflows/ci-core.yml, .github/workflows/ci-http-add-on.yml	Both matrices replace Kubernetes 1.33 with 1.36 and update Kind image pins. Each workflow passes its matrix-selected kubectl version to Kind.

Estimated code review effort: 2 (Simple) | ~12 minutes

Suggested reviewers: zroubalik, jorturfer

Merge Risk: ⚪ Minimal · up to ceb02

The 2.21.0 release changes show no new merge-blocking risk. The existing CRD mismatch still warrants correction.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
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…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title clearly identifies the primary change: the KEDA 2.21.0 release.
Description check	✅ Passed	The description references the related KEDA issue and is consistent with the release changes.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create a new PR

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Caution

Some comments are outside the diff and can’t be posted inline due to GitHub limitations.

⚠️ Outside diff range comments (1)

🟡 Minor · Resync the embedded CRD to restore metricType. · crd-scaledjobs.yaml:2123-2131

keda/templates/crds/crd-scaledjobs.yaml:2123-2131
🗄️ Data Integrity & Integration | 🟡 Minor | ⚡ Quick win

Resync the embedded CRD to restore metricType.

Near line 9103, the embedded scaledjobs.keda.sh schema omits metricType, which exists in the KEDA v2.21.0 release artifact. Resync this CRD from that artifact to keep the chart schema consistent.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Repository: kedacore/charts/.coderabbit.yaml

Review profile: CHILL

Plan: Advanced

Run ID: 0ac6c4ac-3755-4f42-a26c-288278ea83d4

📥 Commits

Reviewing files that changed from the base of the PR and between d240968 and ceb02a7.

⛔ Files ignored due to path filters (3)

• docs/index.yaml is excluded by !docs/index.yaml
• docs/keda-2.21.0.tgz is excluded by !docs/*.tgz
• keda/README.md is excluded by !keda/README.md

📒 Files selected for processing (6)

• .github/workflows/ci-core.yml
• .github/workflows/ci-http-add-on.yml
• README.md
• keda/Chart.yaml
• keda/templates/NOTES.txt
• keda/templates/crds/crd-scaledjobs.yaml

🔗 Linked repositories identified

CodeRabbit considers these linked repositories for cross-repo context during reviews:

• kedacore/keda (manual)

Included review availability: Your plan provides up to 10 included reviews per hour; 9 remain after this review.

[wozniakjan]

@coderabbitai SJ doesn't contain metricType correctly, see #895, #632 and kedacore/keda#2309. It occasionally comes accidentally back but is always synced out.

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