Q: KubeConfig doesn't work, not valid for kube-vip IP, only for some "random" IPs in flannel network.
A: This can happen when cluster is restarted, maybe if rancher pods are restarted, can be fixed with: kubectl annotate secrets -n cattle-system tls-rancher-internal listener.cattle.io/cn-<kube-vip>=<kube-vip>
<kube-vip> = cluster IP address
https://github.com/harvester/harvester/issues/1475

Q: Need to boot with no nomodeset on harvester 0.3.0 nodes
A: https://docs.harvesterhci.io/v0.3/troubleshooting/os/#how-to-change-the-default-grub-boot-menu-entry