我从老师你的md中只看到：
helm install rancher rancher-latest/rancher \
--namespace cattle-system \
--set hostname=192.168.205.106.sslip.io \
--set replicas=1 \
--set bootstrapPassword=admin \
--set rancherImage=registry.cn-hangzhou.aliyuncs.com/rancher/rancher \
--set systemDefaultRegistry=registry.cn-hangzhou.aliyuncs.com
官网rancher中看到：
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//cert-manager.crds.yaml
helm repo add jetstack https://charts.jetstack.io
helm repo update
helm install cert-manager jetstack/cert-manager
–namespace cert-manager
–create-namespace
helm install rancher rancher-latest/rancher
–namespace cattle-system
–set hostname=<IP_OF_LINUX_NODE>.sslip.io
–set replicas=1
–set bootstrapPassword=<PASSWORD_FOR_RANCHER_ADMIN>
请问其中cert-manager是什么作用？有没有例子给我解释一下，然后当中的Version我应该选用什么版本?
目前我的k3s状态：
[root@airancher ~]# kubectl get nodes
NAME STATUS ROLES AGE VERSION
aik8s1 Ready 30m v1.34.5+k3s1
airancher Ready control-plane 49m v1.34.5+k3s1
安装命令：
curl -sfL https://rancher-mirror.rancher.cn/k3s/k3s-install.sh | INSTALL_K3S_MIRROR=cn K3S_TOKEN=12345 sh -s - --system-default-registry=registry.cn-hangzhou.aliyuncs.com
helm版本，helm4，是不是太高了？
helm version
version.BuildInfo{Version:“v4.1.3”, GitCommit:“c94d381b03be117e7e57908edbf642104e00eb8f”, GitTreeState:“clean”, GoVersion:“go1.25.8”, KubeClientVersion:“v1.35”
