Kubernetes 1.21

End of life

1.21.14 Release notes ↗

Is Kubernetes 1.21 still supported?

No

Kubernetes 1.21 reached end of life on Jun 28, 2022 (4 years ago). It no longer gets updates, including security fixes. Upgrade to Kubernetes 1.37 (latest 1.37.1), supported until Oct 28, 2027.

Released
Apr 8, 2021
Active support ended
Apr 28, 2022
4 years ago
End of life
Jun 28, 2022
4 years ago
Latest version
1.21.14
Jun 15, 2022

Upgrade path

The recommended upgrade is Kubernetes 1.37, currently at 1.37.1 and supported until Oct 28, 2027.

Not sure? Run kubectl version

How to upgrade from Kubernetes 1.21 to Kubernetes 1.37

Upgrade one minor version at a time, control plane first, then the nodes.

kubeadm (control plane)

sudo kubeadm upgrade plan
sudo kubeadm upgrade apply v1.37.1

First point your package repository at pkgs.k8s.io/core:/stable:/v1.37/ and upgrade the kubeadm package. Then drain each node, upgrade kubelet and kubectl, and uncordon it.

Official upgrade guide ↗ Back up first, and test on a non-production machine when you move to a new branch.

Quick answers

Is Kubernetes 1.21 still supported?
No. Kubernetes 1.21 reached end of life on Jun 28, 2022 (4 years ago). It no longer gets updates, including security fixes. Upgrade to Kubernetes 1.37 (latest 1.37.1), supported until Oct 28, 2027.
When is Kubernetes 1.21 end of life?
Kubernetes 1.21 reached end of life on Jun 28, 2022. It gets no more updates, including security fixes.
What is the latest version of Kubernetes 1.21?
The latest Kubernetes 1.21 release is 1.21.14, released on Jun 15, 2022.
When was Kubernetes 1.21 released?
Kubernetes 1.21 was released on Apr 8, 2021.
What should I upgrade Kubernetes 1.21 to?
The recommended upgrade is Kubernetes 1.37, currently at 1.37.1 and supported until Oct 28, 2027.
How do I check which Kubernetes version I have?
Run kubectl version, then paste the result into the “Am I up to date?” box on this page.

Other Kubernetes branches

All 22 →

← Kubernetes 1.20 Kubernetes 1.22 →

Kubernetes 1.21 release history

RSS

Release dates for 15 Kubernetes 1.21 versions, newest first.

  1. 1.21.14
  2. 1.21.13
  3. 1.21.12
  4. 1.21.11
  5. 1.21.10
  6. 1.21.9
  7. 1.21.8
  8. 1.21.7
  9. 1.21.6
  10. 1.21.5
All 15 releases
  1. 1.21.4
  2. 1.21.3
  3. 1.21.2
  4. 1.21.1
  5. 1.21.0

Keep track

Kubernetes 1.21 latest version badge

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Official release policy · Checked 3 hours ago