https://ranchermanager.docs.rancher.com/zh/getting-started/installation-and-upgrade/install-upgrade-on-a-kubernetes-cluster

helm repo add rancher-latest https://releases.rancher.com/server-charts/latest

kubectl create namespace cattle-system

kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.18.2/cert-manager.crds.yaml

helm upgrade --install cert-manager jetstack/cert-manager \
  --namespace cert-manager

helm show values rancher-latest/rancher > values.yaml

helm upgrade --install rancher rancher-latest/rancher \
  --namespace cattle-system \
  --create-namespace \
  --set hostname=rancher.local \
  --set bootstrapPassword='rancherpwd@admin' \
  --set service.type=NodePort \
  --set ingress.enabled=false