k8s环境替换docker容器默认存储目录

[root@node1 ~]# kubectl get node
NAME    STATUS   ROLES                  AGE   VERSION
node1   Ready    control-plane,master   43h   v1.23.1
node2   Ready    control-plane,master   43h   v1.23.

[root@node1 ~]# kubectl cordon node1
node/node1 cordoned
[root@node1 ~]# kubectl get node
NAME    STATUS                     ROLES                  AGE   VERSION
node1   Ready,SchedulingDisabled   control-plane,master   44h   v1.23.1
node2   Ready                      control-plane,master   44h   v1.23.1
[root@node1 ~]# 
[root@node1 ~]#

[root@node1 ~]# kubectl drain node1 --delete-local-data --ignore-daemonsets --force 
Flag --delete-local-data has been deprecated, This option is deprecated and will be deleted. Use --delete-emptydir-data.
node/node1 already cordoned
WARNING: ignoring DaemonSet-managed Pods: default/netchecker-agent-c6nlh, default/netchecker-agent-hostnet-ks5tt, kube-system/calico-node-wq79l, kube-system/kube-proxy-r6m7r, kube-system/nodelocaldns-zt6wl
evicting pod kube-system/coredns-5c5b9c5cb-rx4h5
pod/coredns-5c5b9c5cb-rx4h5 evicted
node/node1 drained
[root@node1 ~]# 

[root@node1 ~]# cp -R /var/lib/docker /app/docker/
[root@node1 ~]# mv /var/lib/docker /var/lib/docker-bak

服务配置文件
vim /etc/systemd/system/docker.service
[Unit]
Description=Docker Application Container Engine
Documentation=http://docs.docker.com
After=network.target  containerd.service
BindsTo=containerd.service


[Service]
Type=notify
Environment=GOTRACEBACK=crash
ExecReload=/bin/kill -s HUP $MAINPID
Delegate=yes
KillMode=process
ExecStart=/usr/bin/dockerd 
          $DOCKER_OPTS     ####关于默认存储的配置存在于该变量中
          $DOCKER_STORAGE_OPTIONS 
          $DOCKER_DNS_OPTIONS
LimitNOFILE=1048576
LimitNPROC=1048576
LimitCORE=infinity
TimeoutStartSec=1min
# restart the docker process if it exits prematurely
Restart=on-failure
StartLimitBurst=3
StartLimitInterval=60s

[Install]
WantedBy=multi-user.target

vim /etc/systemd/system/docker.service.d/docker-options.conf
[Service]
Environment="DOCKER_OPTS= --iptables=false 
--exec-opt native.cgroupdriver=systemd 
 
 
--data-root=/app/docker      ###修改此目录为新的存储目录
--log-opt max-size=50m --log-opt max-file=5 

[root@node1 ~]# systemctl daemon-reload 
[root@node1 ~]# systemctl restart docker

容器启动后目录发生改变

[root@node1 ~]# kubectl uncordon node1
node/node1 uncordoned
[root@node1 ~]# 
[root@node1 ~]# kubectl get node
NAME    STATUS   ROLES                  AGE   VERSION
node1   Ready    control-plane,master   44h   v1.23.1
node2   Ready    control-plane,master   44h   v1.23.1