删除并清理rancher节点

叁歲伎倆 2021-12-23 04:19 455阅读 0赞

[https://www.cnrancher.com/docs/rancher/v2.x/cn/configuration/admin-settings/remove-node/][https_www.cnrancher.com_docs_rancher_v2.x_cn_configuration_admin-settings_remove-node]

#停止所有docker容器
    docker stop `docker ps |awk {'print $1'}|grep -v CONTAINER`
    # 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)
    # 删除所有的镜像，慎用
    #docker rmi -f `docker images|awk {'print $3'}`
    
    # 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
    
    
    
    # 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

[https_www.cnrancher.com_docs_rancher_v2.x_cn_configuration_admin-settings_remove-node]: https://www.cnrancher.com/docs/rancher/v2.x/cn/configuration/admin-settings/remove-node/