Unable to update imageGCHighThresholdPercent and imageGCLowThresholdPercent

[Murugappan]

Hi,

I need to update the kubelet parameters imageGCHighThresholdPercent and imageGCLowThresholdPercent, which is not supported by https://cloud.google.com/kubernetes-engine/docs/how-to/node-system-config . Please let me know how to update this config.

[garisingh]

We don't currently support updating these.  Why do you need to update them?

You can file a public feature request using the issue tracker.

[Murugappan]

we are trying to resize the bootdisk, with images (content and overlays) taking the maximum share (about 60 percent of the bd) we are not able to make sure what should be the ideal size. So we tried to reduce the threshold to size if kubelet runs the gc. is there any way to find out the images and ovelays that are not utilized and how much space they are consuming

[garisingh]

Is your goal to shrink the boot disk?

[Murugappan]

yes.