I have an aks cluster with :
- k8s 1.19.13 on the controle plane
- k8s 1.17.13 on the data plane
I need to update the controle plane as <1.20 will no longer be supported, but I can't:
- If I update the controle plane, it ask me to upgrade the dataplane first, as only 2 minor version bellow can be supported (1.17+2<1.20).
- So I try to update the data plane first, but I can't as 1.19 is no longer supported, it prevent me from upgrading the nodes...
I'm stuck in this situation and don't know how to upgrade neither the control plane or data plane...