docker修改工作目录

开始之前请务必给服务器打快照！！！

开始之前请务必给服务器打快照！！！

开始之前请务必给服务器打快照！！！

1. docker 默认安装在 /var/lib/docker 目录下

$ docker info | grep -i dir
 Docker Root Dir: /var/lib/docker

2. 关闭docker

$ systemctl status docker.service 

● docker.service - Docker Application Container Engine
   Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
   Active: inactive (dead) since Sun 2024-02-18 17:37:36 CST; 3s ago
     Docs: https://docs.docker.com
  Process: 32670 ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock (code=exited, status=0/SUCCESS)
 Main PID: 32670 (code=exited, status=0/SUCCESS)

Feb 18 17:37:12 iZ8vb4dtxhzjq6edcdznleZ dockerd[32670]: time="2024-02-18T17:37:12.236566810+08:00" level=info msg="Loading containers: done."
Feb 18 17:37:12 iZ8vb4dtxhzjq6edcdznleZ dockerd[32670]: time="2024-02-18T17:37:12.256596144+08:00" level=info msg="Docker daemon" commit=e2f740d graphdriver(s)=overlay2 version=20.10.10
Feb 18 17:37:12 iZ8vb4dtxhzjq6edcdznleZ dockerd[32670]: time="2024-02-18T17:37:12.256642864+08:00" level=info msg="Daemon has completed initialization"
Feb 18 17:37:12 iZ8vb4dtxhzjq6edcdznleZ systemd[1]: Started Docker Application Container Engine.
Feb 18 17:37:12 iZ8vb4dtxhzjq6edcdznleZ dockerd[32670]: time="2024-02-18T17:37:12.269168156+08:00" level=info msg="API listen on /var/run/docker.sock"
Feb 18 17:37:36 iZ8vb4dtxhzjq6edcdznleZ systemd[1]: Stopping Docker Application Container Engine...
Feb 18 17:37:36 iZ8vb4dtxhzjq6edcdznleZ dockerd[32670]: time="2024-02-18T17:37:36.971997368+08:00" level=info msg="Processing signal 'terminated'"
Feb 18 17:37:36 iZ8vb4dtxhzjq6edcdznleZ dockerd[32670]: time="2024-02-18T17:37:36.972590865+08:00" level=info msg="stopping event stream following graceful shutdown" error="<nil>" module=libcontainerd namespace=moby
Feb 18 17:37:36 iZ8vb4dtxhzjq6edcdznleZ dockerd[32670]: time="2024-02-18T17:37:36.972830242+08:00" level=info msg="Daemon shutdown complete"
Feb 18 17:37:36 iZ8vb4dtxhzjq6edcdznleZ systemd[1]: Stopped Docker Application Container Engine.

3. 移动工作目录到其他目录

$ mv /var/lib/docker /data/

4. 修改配置文件,如果没有，则新建

$ vim /etc/docker/daemon.json

5. daemon.json文件如下：
   “data-root”:“/data/docker” 是新增的

注意：如果原先有内容，在上一行添加 ，（逗号）

{
   
"registry-mirrors":["https://registry.docker-cn.com"],
"data-root":"/data/docker"
}

6. 启动docker

$ systemctl start docker.service