Önce Flannel i kaldiriyoruz

kubectl delete daemonset -n kube-flannel kube-flannel-ds
kubectl delete cm kube-flannel-cfg -n kube-flannel
rm /etc/cni/net.d/10-flannel.conflist

Calico kurulumu : https://docs.tigera.io/calico/latest/getting-started/kubernetes/self-managed-onprem/onpremises