k3s的基本安装没有节点

Question

我按照here的说明安装了k3s。我也看了这个tutorial。在这两种情况下，都会显示在安装后运行此命令：

k3s kubectl get node

然而，当我这样做时，我会得到这样的结果：

# k3s kubectl get node
No resources found

这不能工作的原因是什么呢？

如果我指定Rancher创建的kubeconfig文件，我会得到相同的响应。

# kubectl --kubeconfig /etc/rancher/k3s/k3s.yaml get node
No resources found

我相信集群正在运行：

# kubectl --kubeconfig /etc/rancher/k3s/k3s.yaml cluster-info
Kubernetes control plane is running at https://127.0.0.1:6443
CoreDNS is running at https://127.0.0.1:6443/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy
Metrics-server is running at https://127.0.0.1:6443/api/v1/namespaces/kube-system/services/https:metrics-server:/proxy

To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'.

服务和命名空间

# kubectl --kubeconfig /etc/rancher/k3s/k3s.yaml get svc
NAME         TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)   AGE
kubernetes   ClusterIP   10.43.0.1    <none>        443/TCP   16h

# kubectl --kubeconfig /etc/rancher/k3s/k3s.yaml get ns
NAME              STATUS   AGE
default           Active   16h
kube-system       Active   16h
kube-public       Active   16h
kube-node-lease   Active   16h

操作系统

# cat /etc/redhat-release 
CentOS Linux release 7.9.2009 (Core)

这是一个具有2个CPU和8 GB RAM的虚拟机。

Answer 1

是由不兼容的文件系统引起的。日志里有这个。

ERRO[2021-09-24T10:40:28.848795952-04:00] Failed to configure agent: "overlayfs" snapshotter cannot be enabled for "/var/lib/rancher/k3s/agent/containerd", try using "fuse-overlayfs" or "native": /var/lib/rancher/k3s/agent/containerd does not support d_type. If the backing filesystem is xfs, please reformat with ftype=1 to enable d_type support