due to a wrong installation method (single node) we would like to migrate our existing kubernetes cluster to a newer and HA-rancher-kubernetes cluster.
Can someone tell me if it’s safe to do following:
- remove (previously imported) cluster from our 2.4.8 single-node rancher installation
- register this cluster again on our new kubernetes-managed 2.5 rancher-cluster?
We already tried this with our development cluster and it worked fine, the only thing which was necessary to do was to:
- create user/admin accounts again
- reassign all namespaces to the corresponding rancher projects
Would be nice to get some more opinions on this, right now it looks more or less safe
Also does someone know what happens if one kubernetes cluster is registered/imported to two rancher instances at the same time (like 2.4.8 and 2.5 at the same time) - I know its probably really a bad Idea - just want to get a better understanding if I’m wrong