rancher单节点kubernetes启动容器错误

0/1 nodes are available: 1 node(s) had taints that the pod didn't tolerate.

是由于默认的master节点不允许作为数据节点使用，需要修改master节点使之可以同时作为data节点

首先要找到master节点的名称

[root@localhost ~]# kubectl get nodes --all-namespaces
NAME                    STATUS   ROLES    AGE     VERSION
localhost.localdomain   Ready    master   3d21h   v1.17.5

然后修改master节点

[root@localhost ~]# kubectl taint node localhost.localdomain  node-role.kubernetes.io/master-
node/localhost.localdomain untainted