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Merge pull request #9129 from kinvolk/rata/userns-doc

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docs/userns: Clarify requirements for k8s 1.25/1.26
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Derek McGowan 2023-09-22 22:22:58 -07:00 committed by GitHub
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@ -31,8 +31,20 @@ false` setting in your pod.spec will be **silently ignored**.
### Kubernetes 1.25 and 1.26 ### Kubernetes 1.25 and 1.26
* Containerd 1.7 or greater * Containerd 1.7
* runc 1.1 or greater * You can use runc or crun as the OCI runtime:
* runc 1.1 or greater
* crun 1.4.3 or greater
You can also use containerd 2.0 or above, but the same [requirements as Kubernetes 1.27 and
greater](#Kubernetes-127-and-greater) apply, except for the Linux kernel. Bear in mind that all the
requirements there apply, including file-systems supporting idmap mounts. You can use Linux
versions:
* Linux 5.15: you will suffer from [the containerd 1.7 storage and latency
limitations](#Limitations), as it doesn't support idmap mounts for overlayfs.
* Linux 5.19 or greater (recommended): it doesn't suffer from any of the containerd 1.7
limitations, as overlayfs started supporting idmap mounts on this kernel version.
### Kubernetes 1.27 and greater ### Kubernetes 1.27 and greater