由于规划问题,通过rancher安装的k8s不完美,决定重装。将所有东西都卸载赶紧后

docker卸载清除:
yum remove docker* -y
rm /var/lib/dockerfr
rm /var/run/docker -frfr
k8s清除:
kubeadmin reset

再次通过rancher安装k8s后,一直报错起不来

[etcd] Failed to bring up Etcd Plane: [etcd] Etcd Cluster is not health

通过docker ps查看etcd的容器一起在无限重启,使用如下命令查看日志

docker logs etcd

看到日志有提到
本地有保存的member数据,直接还原,找了一番之后发现在/var/lin/etcd/下面还有很多残余数据,看上去像是备份之类的,如下:

直接删掉,再次安装集群,顺利完成

ps:

有大佬整理了清理k8s脚本:

docker rm -f $(sudo docker ps -aq);
docker volume rm $(sudo docker volume ls -q);

rm -rf /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

for mount in $(mount | grep tmpfs | grep '/var/lib/kubelet' | awk '{ print $3 }') /var/lib/kubelet /var/lib/rancher; do umount $mount; done

rm -f /var/lib/containerd/io.containerd.metadata.v1.bolt/meta.db
sudo systemctl restart containerd
sudo systemctl restart docker