How to make a virtual ip jump to another control plane when the node where the virtual ip is located is notReady?

[HuaJFrame]

How to make a virtual ip jump to another control plane when the node where the virtual ip is located is notReady?

[jusch23]

Similar to the problem described here, I have also observed that the vip does not jump to another control plane host when the apiserver on the host currently holding the vip is down but kube-vip is running. I would expect one of the running apiservers to take over the leader lease and assign the vip, but this does not happen. Compared to a haproxy/keepalived setup, this could be achieved by configuring an apiserver health check script within keepalived on the node. An apiserver failure would then result in a lower priority of the instance within the keepalived cluster and a vip jump to a working apiserver. Is this possible with kube-vip?

My context:
Kubernetes version: v1.27.10
Container Runtimes: containerd 1.6.28
kube-vip version: v0.7.2

[lubronzhan]

Currently it's not possible since kube-vip use leaderelection package to achieve active-standby mode HA. Only when the leader failed to acquire leader -- talking to apiserver to update lease, other follower could acquire the leader by claim the lease.

But an improvement could be made is to add a node controller or a process to watch for current node's status, if current node is not ready for example 1 minute, fatal exit, then other pod could try acquire the leader. Just need be care with how much time should the kube-vip decide to exit.