K8S節點清理過程

# 停止服務

systemctl disable kubelet.service systemctl disable kube-scheduler.service systemctl disable kube-proxy.service systemctl disable kube-controller-manager.service systemctl disable kube-apiserver.service systemctl stop kubelet.service systemctl stop kube-scheduler.service systemctl stop kube-proxy.service systemctl stop kube-controller-manager.service

systemctl stop kube-apiserver.service

# 刪除所有容器

docker rm -f $(docker ps -qa)

# 刪除所有容器卷

docker volume rm $(docker volume ls -q)

# 解除安裝mount目錄

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

刪除

rm -rf /etc/kubernetes

rm -rf /var/lib/etcd

rm -rf /var/lib/rancher

rm -rf /opt/rke

或者備份

# 備份目錄
mv /etc/kubernetes /etc/kubernetes-bak-$(date +"%y%m%d%h%m")
mv /var/lib/etcd /var/lib/etcd-bak-$(date +"%y%m%d%h%m")
mv /var/lib/rancher /var/lib/rancher-bak-$(date +"%y%m%d%h%m")
mv /opt/rke /opt/rke-bak-$(date +"%y%m%d%h%m")

rm -rf /etc/ceph \ /etc/cni \ /opt/cni \ /run/secrets/kubernetes.io \ /run/calico \ /run/flannel \ /var/lib/calico \ /var/lib/cni \ /var/lib/kubelet \ /var/log/containers \ /var/log/pods \

/var/run/calico

# 清理網路介面
network_inte***ce=`ls /sys/class/net`
for net_inter in $network_inte***ce;
doif ! echo $net_inter | grep -qie 'lo|docker0|eth*|ens*';then
ip link delete $net_inter
fidone
# 清理殘留程序
port_list='80 443 6443 2376 2379 2380 8472 9099 10250 10254'
for port in $port_list
dopid=`netstat -atlnup|grep $port |awk ''|awk -f '/' ''|grep -v -|sort -rnk2|uniq`
if [[ -n $pid ]];then
kill -9 $pid
fidone
pro_pid=`ps -ef |grep -v grep |grep kube|awk ''`
if [[ -n $pro_pid ]];then
kill -9 $pro_pid
fi# 清理iptables表
## 注意：如果節點iptables有特殊配置，以下命令請謹慎操作
sudo iptables --flush
sudo iptables --flush --table nat
sudo iptables --flush --table filter
sudo iptables --table nat --delete-chain
sudo iptables --table filter --delete-chain
systemctl restart docker

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