KEP-5425 Automatic Swap Labels

[ajaysundark]

• One-line PR description: Kubelet creates preset label for swap enabled nodes.

• Issue link: Automatic Swap Node Labels #5425

• Other comments:

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[ajaysundark]

/cc @tallclair @SergeyKanzhelev

[SergeyKanzhelev]

why is it needed upstream if there will be #5424?

[ajaysundark]

I was not aware of #5424. I'd discuss with them to understand their approach further.

But, the interest of labels is not to solve all of swap-scheduling.
IMHO, Labels offer node-filtering for swap-enabled nodes for node-management tasks such as selective tainting or targeted node-selection for auto-scaling (eg: setting additional rules for HPA). This visibility will also benefit better monitoring of swap-nodes.