1.执行drain操作
kubectl drain k8s-node01 --ignore-daemonsets #
2.对应节点上关闭docker
#注意，是要迁移的节点 systemctl stop kubelet systemctl stop docker.socket systemctl stop docker
3.安装、配置 Containerd
yum install containerd.io cri-tools -y #就是docker的yum源
mkdir -p /etc/containerd
crictl config runtime-endpoint unix:///var/run/containerd/containerd.sock
containerd config default #生成默认配置文件
vim /etc/containerd/config.toml
61 sandbox_image = "registry.aliyuncs.com/google_containers/pause:3.7" #修改镜像下载地址
125 SystemdCgroup = true #使用systemdcgroup驱动 参考文档：https://kubernetes.io/zh-cn/docs/setup/production-environment/container-runtimes/
153 [plugins."io.containerd.grpc.v1.cri".registry.mirrors]
添加
[plugins."io.containerd.grpc.v1.cri".registry.mirrors."docker.io"] #设置镜像加速
endpoint = ["https://j7ih9k5f.mirror.aliyuncs.com"]
4.加载模块及修改参数(转发IPv4并让iptables看到桥接流量)
cat << EOF > /etc/modules-load.d/containerd.conf overlay br_netfilter EOF modprobe overlay modprobe br_netfilter lsmod | egrep 'overlay|br_netfilter'
#docker版本以下配置应该已经存在，确认后操作 cat <<EOF > /etc/sysctl.d/k8s.conf net.bridge.bridge-nf-call-ip6tables = 1 net.bridge.bridge-nf-call-iptables = 1 net.ipv4.ip_forward = 1 EOF sysctl -p /etc/sysctl.d/k8s.conf
systemctl enable containerd ; systemctl restart containerd systemctl status containerd
5.修改kubelet配置
cat /etc/sysconfig/kubelet KUBELET_EXTRA_ARGS="--container-runtime=remote --runtime-request-timeout=15m --container-runtime-endpoint=unix:///run/containerd/containerd.sock" #设置kubelet使用系统套接字 ，参考文档：https://kubernetes.io/zh-cn/docs/reference/command-line-tools-reference/kubelet/ systemctl restart kubelet systemctl status kubelet root@k8s-master manifests]# kubectl get node -o wide|grep k8s-node01 #检查节点 k8s-node01 Ready <none> 41h v1.20.11 192.168.1.132 <none> CentOS Linux 7 (Core) 6.0.2-1.el7.elrepo.x86_64 containerd://1.6.8
6.执行uncordon操作
kubectl uncordon k8s-node01 #剩余节点依次操作即可
7.删除docker
yum remove docker-ce docker-ce-cli
标签：etc,Containerd,kubelet,systemctl,containerd,Docker,k8s,docker From： https://www.cnblogs.com/panwenbin-logs/p/16827195.html