Document node.alpha.kubernetes.io/ttl label

[pmady]

Fixes #53889

This PR adds documentation for the deprecated node.alpha.kubernetes.io/ttl label in the Well-Known Labels, Annotations and Taints reference page.

What this PR does:

• Documents the node.alpha.kubernetes.io/ttl label that was historically used by tools like minikube
• Marks it as deprecated with a clear note that it has no effect in current Kubernetes versions
• Explains that it may still be set by older tools for backward compatibility

Why this is needed:

As mentioned in the issue, the Well-Known Labels, Annotations and Taints page serves as a coordination point for assigning values. It's important to register all labels that are or have been used, even deprecated ones, to maintain a complete reference.

[netlify]

✅ Pull request preview available for checking

Built without sensitive environment variables

Name	Link
🔨 Latest commit	129b019
🔍 Latest deploy log	https://app.netlify.com/projects/kubernetes-io-main-staging/deploys/6962b5a9b0030000087c6a26
😎 Deploy Preview	https://deploy-preview-53892--kubernetes-io-main-staging.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify project configuration.

[lmktfy]

When people write reviews (and, because this is open source, anyone can) the key question to considerbis: does this change make the documentation better than it started.

This one is easy to say that about, so:
/lgtm
/approve

[lmktfy]

I am not really sure what this actually does, but registering it with an incomplete explanation is much better than not registering it at all.

[lmktfy]

Oops, I didn't notice the commit message.
/lgtm cancel
/approve cancel

Do you know how to amend the commit @pmady? If you have amended it and are using the git tool, you would then run git push --force-with-lease to replace the remote branch with your updated changes.

[lmktfy]

Here's how to fix the commit message:

 Document node.alpha.kubernetes.io/ttl label
    
 Add documentation for the deprecated node.alpha.kubernetes.io/ttl label
 in the Well-Known Labels, Annotations and Taints reference page.
     
 This label was historically used by tools like minikube to set a
 time-to-live value for nodes. The label is deprecated and has no effect
 in current Kubernetes versions, but may still be set by older tools for
 backward compatibility.
-   
-Fixes #53889
-   
-Signed-off-by: pmady <pavan4devops@gmail.com>

This doesn't need a DCO or commit message signoff. You did need to sign the CLA; I see that you have done so.

[pmady]

@lmktfy fixed the commit message. Thanks

[sshehrozali]

@pmady this is still not fixed yet, look at the last line of your commit message.

[pmady]

/retest

[k8s-ci-robot]

@pmady: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

Details

In response to this:

/retest

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[tengqm]

/lgtm
/approve

[k8s-ci-robot]

LGTM label has been added.

Details

Git tree hash: a419cbcd5e4e754caa58356d567966fb292c465c

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: tengqm

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Details

Needs approval from an approver in each of these files:

• content/en/docs/OWNERS [tengqm]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment