狂神说-Docker基础-学习笔记-07 容器数据卷

2023-12-14 15:53:27

狂神说-Docker基础-学习笔记-07 容器数据卷

视频地址：https://www.bilibili.com/video/BV1og4y1q7M4?p=21

什么是容器数据卷

运行时数据都在容器中，如果容器被删除，那么数据将丢失，为了解决数据保存和复用的问题，出现了容器的数据卷，即使，容器被删除数据也能得到保存，不同容器间也可以共享数据。

其实就是实现了容器数据到本地数据的同步，这就是卷数据，这就是目录的挂载，将容器内的目录挂载到宿主机上面

使用数据卷

方式一：直接使用命令来挂载：docker run -it -v 主机目录：容器目录

具体操作

C:\Users\z>docker run -it --name centosV01 -v D:\dockerVMdata\centosHome\test:/home/test centos /bin/bash
[root@9c3b5c17dfb7 /]# ls
bin  dev  etc  home  lib  lib64  lost+found  media  mnt  opt  proc  root  run  sbin  srv  sys  tmp  usr  var
[root@9c3b5c17dfb7 /]# cd home
[root@9c3b5c17dfb7 home]# ls
test
[root@9c3b5c17dfb7 home]# cd test
[root@9c3b5c17dfb7 test]# cd ..
[root@9c3b5c17dfb7 home]# cd ..
[root@9c3b5c17dfb7 /]# cd usr
[root@9c3b5c17dfb7 usr]# ls
bin  games  include  lib  lib64  libexec  local  sbin  share  src  tmp
[root@9c3b5c17dfb7 usr]# cd ..
[root@9c3b5c17dfb7 /]# cp -r usr/* home/test

cp: cannot create directory 'home/test/share/terminfo/a': File exists
cp: cannot create directory 'home/test/share/terminfo/e': File exists

^C
[root@9c3b5c17dfb7 /]# cd home/test
[root@9c3b5c17dfb7 test]# ls -a
.  ..  bin  games  include  lib  lib64  libexec  local  sbin  share
[root@9c3b5c17dfb7 test]# ls
bin  games  include  lib  lib64  libexec  local  sbin  share
[root@9c3b5c17dfb7 test]#
C:\Users\z>docker ps
CONTAINER ID   IMAGE     COMMAND       CREATED         STATUS         PORTS     NAMES
9c3b5c17dfb7   centos    "/bin/bash"   7 minutes ago   Up 7 minutes             centosV01

C:\Users\z>docker inspect 9c3b5c17dfb7
[
    {
        "Id": "9c3b5c17dfb754d5e20834e89fd6ae89d17ba65b15bcd7f6966e72435fb71f66",
        "Created": "2021-11-20T16:31:04.5139086Z",
        "Path": "/bin/bash",
        "Args": [],
        "State": {
        
                            #·············#
        
        },
        "Mounts": [
            {
                "Type": "bind",
                "Source": "D:\\dockerVMdata\\centosHome\\test",
                "Destination": "/home/test",
                "Mode": "",
                "RW": true,
                "Propagation": "rprivate"
            }
        ],
        "Config": {
        
                            #·············#
        
        }
    }
]