Download Latest Version v1.21.2 source code.tar.gz (13.9 MB)
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checksums.txt 2026-03-24 547 Bytes
checksums.txt.pem 2026-03-24 1.4 kB
checksums.txt.sig 2026-03-24 96 Bytes
serving-crds.yaml 2026-03-24 410.3 kB
serving-core.yaml 2026-03-24 519.4 kB
serving-default-domain.yaml 2026-03-24 2.9 kB
serving-hpa.yaml 2026-03-24 3.8 kB
serving-post-install-jobs.yaml 2026-03-24 4.6 kB
serving-storage-version-migration.yaml 2026-03-24 2.3 kB
README.md 2026-03-24 1.1 kB
v1.21.2 source code.tar.gz 2026-03-24 13.9 MB
v1.21.2 source code.zip 2026-03-24 21.3 MB
Totals: 12 Items   36.1 MB 1

🚨 Breaking or Notable Changes

Secure Pod Defaults (#16042, @nader-ziada)

We've introduce secure-pod-defaults in an earlier release and included a new setting AllowRootBounded in v1.20 that offers a better security posture for your workloads but balances the compatibility with images that require/expect you to run as root.

For 1.21 release the secure-pod-defaults default will remain disabled but in a future release (most likely v1.22) we will switch this default to AllowRootBounded.

If you're unsure whether your workloads will support this new setting you should explicitly set this option to disabled prior to upgrading to v1.22.

For more information see the documentation and reach out if you foresee issues in your testing.

What's Changed

Full Changelog: https://github.com/knative/serving/compare/knative-v1.21.1...knative-v1.21.2

Source: README.md, updated 2026-03-24