背景

在已有的节点上部署k8s时会有如下报错日志

  [etcd] Failed to bring up Etcd Plane: etcd cluster is unhealthy: hosts [192.168.154.231] failed to report healthy. Check etcd container logs on each host for more information

这是由于主机上etcd的资源没有清楚干净，需要把docker和主机上相关文件目录删除

docker stop $(docker ps -aq)
docker rm $(docker ps -aq)
docker system prune -f
docker volume rm $(docker volume ls -q)
docker image rm $(docker image ls -q)
rm -rf /etc/ceph \
       /etc/cni \
       /etc/kubernetes \
       /opt/cni \
       /opt/rke \
       /run/secrets/kubernetes.io \
       /run/calico \
       /run/flannel \
       /var/lib/calico \
       /var/lib/etcd \
       /var/lib/cni \
       /var/lib/kubelet \
       /var/lib/rancher/rke/log \
       /var/log/containers \
       /var/log/pods \
       /var/run/calico

删除后建议重启一下主机，再在rancher上新建集群创建k8s集群