How can I change the ip address of the master and worker nodes of a Kubernetes cluster?

Question

Kubernetes

Hello!
There is a Kubernetes cluster of 3 master and 3 worker nodes. Network administrators change planned ip addressing. The replacement of addresses stopped on this cluster.
How can I change ip addressing with minimal downtime?!
Is there any step by step tutorial?

Thanks in advance for any information.

Answer 1

It is easier to recreate the cluster. Raise the second and transfer the load to it.
If the addresses are still from the same subnet, then you can trick it: the node is removed from the cluster - it is entered with a new address. It is advisable to reinstall the operating system. It's the same with masters.
If the subnets are different, then intractable issues arise with the network plugin: flannel understands only flat networks, you can play with calico with the cross-subnet parameter.
But the simplest and fastest is re-creation.