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Kubernetes v1.21.9

Kubernetes: v1.21.9 Release

Release date:
January 19, 2022
Previous version:
v1.21.9-rc.0 (released December 15, 2021)
Magnitude:
2,339 Diff Delta
Contributors:
22 total committers
Data confidence:
Commits:
30 impacting commits

44 Features Released with v1.21.9

Revert "Cleanup portforward streams after their usage" [1.21]
#102587
Mark volume as uncertain after Unmount* fails
#100183
v1.22: Fix test flake in old svc registry
#105111
Mark volume mount as uncertain in case of volume expansion fails
#100567
Pod stuck in terminating when subPath was deleted in azure fileshare
#97031
workqueue: fix leak in queue preventing objects from being GCed
#105031
Skip creating HNS loadbalancer with empty endpoints
#106936
[storage] [test] Ensure proper resource creation
#103385
Don't set sysctl net.ipv4.vs.conn_reuse_mode for kernels >=5.9
#102122
Fix workqueue memory leak
#104991
Fix a panic when using invalid output format in kubectl create secret command
#107221
upgrade sigs.k8s.io/structured-merge-diff/v4 to v4.2.1
#107565
fix the error when cleaning up finished jobs for cronjob
#104799
fix: leave the probe path empty for TCP probes
#105253
fix: do not delete the lb that does not exist
#105777
Fix concurrent map writes error in kube-apiserver
#106045
Improving performance of EndpointSlice controller metrics cache
#107091
flake: remove the error handler for cronjob integration test
#107200
Cherry pick of anp 0.0.27 for v1.21
#107188
kubeadm: remove the restriction that the ca.crt can only contain one certificate
#107327
client-go: Clear the ResourceVersionMatch on paged list calls
#107311
vendor: bump cAdvisor to v0.39.3
#107356
Fix the leak of vSphere client sessions
#107337
Fix header mutation race in timeout filter
#107452
Automated cherry pick of #106936: Skip creating HNS loadbalancer with empty endpoints
#106970
Automated cherry pick of #106906: mount-utils: Detect potential stale file handle
#107040
Automated cherry pick of #107565: upgrade sigs.k8s.io/structured-merge-diff/v4 to v4.2.1
#107569
Cherry pick #106045 to 1.21: Fix concurrent map writes error in kube-apiserver
#106337
Automated cherry pick of #104991: Fix workqueue memory leak #105031: workqueue: fix leak in queue preventing objects from being
#106583
Automated cherry pick of #105777: fix: do not delete the lb that does not exist
#106068

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Top Contributors in v1.21.9

jsafrane
nilo19
robscott
jingxu97
bobbypage
jiahuif
liggitt
chenlinx17
fasaxc
tsmetana

Directory Browser for v1.21.9

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Release Notes Published

See kubernetes-announce@. Additional binary downloads are linked in the CHANGELOG.

See the CHANGELOG for more details.

Release Assets

<table> <tr><td colspan="2"><b>Kubernetes Source Code: </b> kubernetes.tar.gz</td><tr> <tr><td>SHA256</td><td>0fc6eab832e655b149686c4a64d264d9eff0be6f0f8d35ee9fdde349f950faab</td></tr> <tr><td>SHA512</td><td>525d981f5fa61abfd52df07e49a3bbe87a11e1e654d63e601124e35fb5b82d23390601562300cb0c1f62bdacb3bf9bb73c91067ab2cb0cb47b9b9cb34aadd289</td></tr> </table>

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