Tell us about your request

At this time registration TTL is hard code to 15 minutes. It would be greatly appreciated if we can make this configurable by the user.

Tell us about the problem you're trying to solve. What are you trying to do, and why is it hard?

At this time registration TTL is hard code, https://github.com/aws/karpenter-core/blob/main/pkg/controllers/machine/lifecycle/liveness.go#L38, however some of our nodes takes close to and some times over the 15 minute time window to run -> bootstrap -> join the cluster. This means that these nodes will be terminated after 15 minutes even though they would have been able to join the cluster.

Are you currently working around this issue?

Since this isn't user configurable, we have the fork the code and build our own image for Karpenter to bypass this limitation.

Additional Context

https://kubernetes.slack.com/archives/C02SFFZSA2K/p1685123613509889 Conversation from slack

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