#!/bin/bash

#From:rancher

#date:2019-10-18

#admin:jarno

# 停止服务

  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

# 删除所有容器

  docker rm -f $(docker ps -qa)

# 删除所有容器卷

  docker volume rm $(docker volume ls -q)

# 卸载mount目录

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

# 备份目录

  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")

# 删除残留路径

  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

# 清理网络接口

  network_interface=`ls /sys/class/net`

  for net_inter in $network_interface;

  do

    if ! echo $net_inter | grep -qiE 'lo|docker0|eth*|ens*';then

      ip link delete $net_inter

    fi

  done

# 清理残留进程

  port_list='80 443 6443 2376 2379 2380 8472 9099 10250 10254'

  for port in $port_list

  do

    pid=`netstat -atlnup|grep $port |awk '{print $7}'|awk -F '/' '{print $1}'|grep -v -|sort -rnk2|uniq`

    if [[ -n $pid ]];then

      kill -9 $pid

    fi

  done

  pro_pid=`ps -ef |grep -v grep |grep kube|awk '{print $2}'`

  if [[ -n $pro_pid ]];then

    kill -9 $pro_pid

  fi

# 清理Iptables表

## 注意：如果节点Iptables有特殊配置，以下命令请谨慎操作

  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