Modify the kubelet configuration of the GKE node.

Former Community Member · 07-19-2023 01:06 AM

I would like to adjust the "shutdownGracePeriod" and "shutdownGracePeriodCriticalPods" for my GKE nodes that use Spot VMs, but I noticed that there is no relevant configuration mentioned in the official documentation [1].

How can I modify these settings?

[1] https://cloud.google.com/kubernetes-engine/docs/how-to/node-system-config#kubelet-options

garisingh

Two things:

1) You are correct in that we don't allow you to modify these values on GKE
2) For Spot VMs, changing the default settings would effectively be meaningless because Spot VMs will terminate in 30 secs so the total time GKE can allow is 30 secs.

There is an early access program for a new Spot 120s termination notification feature. If you have an Google account team, you can reach out to them or you can file a support ticket.

If neither of those are an option, you can message me directly.

subithal

Do you have options for normal VMs or any other way we can edit the kubelet config. I wanna adjust the following configs


evictionSoft: 
nodefs.available: 25% 
evictionSoftGracePeriod: 
nodefs.available: 120s

@Former Community Member wrote:
I would like to adjust the "shutdownGracePeriod" and "shutdownGracePeriodCriticalPods" for my GKE nodes that use Spot VMs, but I noticed that there is no relevant configuration mentioned in the official documentation [1].
How can I modify these settings?
[1] https://cloud.google.com/kubernetes-engine/docs/how-to/node-system-config#kubelet-options

garisingh

Nothing out of the box. In theory, you could run a privileged DaemonSet which edits the Kubelet config and restarts the Kubelet, but I don't really know many people who do this.