Modifying Management Cluster - Update EKS Subnets

Hi all,

I’m trying to figure out a way modify a management cluster’s configuration so that I can add some newly created subnets to my node groups. I can manually change the subnets in the AWS autoscaling group, but when I do Rancher complains about it stating a syncing error.

I’ve been trying to update the management cluster’s YAML but when saving I’m presented with this error:

{ "data": "404 page not found\n" }

Is there a way I can edit the management cluster to specify these node groups? Perhaps there’s a different method where I don’t actually need to modify the management cluster’s configuration, if there is I would love to know how to do it.

Many thanks.