从Docker容器内拷贝文件到主机上

悠悠 2022-09-21 13:13 192阅读 0赞

# 如何在Docker容器内外互相拷贝数据？ #

<table> 
 <tbody> 
  <tr> 
   <td>[日期：2015-02-09]</td> 
   <td align="center">来源：Linux社区&nbsp; 作者：yangzhenping</td> 
   <td align="right">[字体：大 中 小]</td> 
  </tr> 
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</table>

从Docker容器内拷贝文件到主机上

docker cp <containerId>:/file/path/within/container /host/path/target

从主机上拷贝文件到容器内

参考自：

http://stackoverflow.com/questions/22907231/copying-files-from-host-to-docker-container

1.用-v挂载主机数据卷到容器内

docker run -v /path/to/hostdir:/mnt $container

在容器内拷贝

cp /mnt/sourcefile /path/to/destfile

2.直接在主机上拷贝到容器物理存储系统

A. 获取容器名称或者id :

$ docker ps

B. 获取整个容器的id

$ docker inspect -f  '\{ \{.Id\}\}'  步骤A获取的名称或者id

C. 在主机上拷贝文件:

$ sudo cp path-file-host /var/lib/docker/aufs/mnt/FULL\_CONTAINER\_ID/PATH-NEW-FILE

或者

$ sudo cp path-file-host /var/lib/docker/devicemapper/mnt/123abc<<id>>/rootfs/root

例子：

$ docker ps

CONTAINER ID      IMAGE    COMMAND      CREATED      STATUS      PORTS        NAMES

d8e703d7e303  solidleon/ssh:latest      /usr/sbin/sshd -D                      cranky\_pare

$ docker inspect -f  '\{ \{.Id\}\}' cranky\_pare

$ docker inspect -f  '\{ \{.Id\}\}' d8e703d7e303

d8e703d7e3039a6df6d01bd7fb58d1882e592a85059eb16c4b83cf91847f88e5

$ sudo cp file.txt /var/lib/docker/aufs/mnt/\*\*d8e703d7e3039a6df6d01bd7fb58d1882e592a85059eb16c4b83cf91847f88e5

3.用输入输出符

docker run -i [ Ubuntu][Ubuntu] /bin/bash -c 'cat > /path/to/container/file' < /path/to/host/file/

或者

docker exec -it <container\_id> bash -c 'cat > /path/to/container/file' < /path/to/host/file/

在Docker容器之间拷贝数据：原理与操作示例  [ http://www.linuxidc.com/Linux/2015-02/113138.htm][http_www.linuxidc.com_Linux_2015-02_113138.htm]

Docker安装应用([CentOS][] 6.5\_x64) [http://www.linuxidc.com/Linux/2014-07/104595.htm][http_www.linuxidc.com_Linux_2014-07_104595.htm]

在 Docker 中使用 MySQL [ http://www.linuxidc.com/Linux/2014-01/95354.htm][http_www.linuxidc.com_Linux_2014-01_95354.htm]

在Ubuntu Trusty 14.04 (LTS) (64-bit)安装Docker [ http://www.linuxidc.com/Linux/2014-10/108184.htm][http_www.linuxidc.com_Linux_2014-10_108184.htm]

Docker安装应用(CentOS 6.5\_x64) [ http://www.linuxidc.com/Linux/2014-07/104595.htm][http_www.linuxidc.com_Linux_2014-07_104595.htm]

Ubuntu 14.04安装Docker  [ http://www.linuxidc.com/linux/2014-08/105656.htm][http_www.linuxidc.com_linux_2014-08_105656.htm]

阿里云CentOS 6.5 模板上安装 Docker [ http://www.linuxidc.com/Linux/2014-11/109107.htm][http_www.linuxidc.com_Linux_2014-11_109107.htm]

**Docker 的详细介绍**：[请点这里][Link 1]  
**Docker 的下载地址**：[请点这里][Link 2]

**本文永久更新链接地址**：[http://www.linuxidc.com/Linux/2015-02/113139.htm][http_www.linuxidc.com_Linux_2015-02_113139.htm]

[![linux][]][linux 1]

[Ubuntu]: http://www.linuxidc.com/topicnews.aspx?tid=2
[http_www.linuxidc.com_Linux_2015-02_113138.htm]: http://www.linuxidc.com/Linux/2015-02/113138.htm
[CentOS]: http://www.linuxidc.com/topicnews.aspx?tid=14
[http_www.linuxidc.com_Linux_2014-07_104595.htm]: http://www.linuxidc.com/Linux/2014-07/104595.htm
[http_www.linuxidc.com_Linux_2014-01_95354.htm]: http://www.linuxidc.com/Linux/2014-01/95354.htm
[http_www.linuxidc.com_Linux_2014-10_108184.htm]: http://www.linuxidc.com/Linux/2014-10/108184.htm
[http_www.linuxidc.com_linux_2014-08_105656.htm]: http://www.linuxidc.com/linux/2014-08/105656.htm
[http_www.linuxidc.com_Linux_2014-11_109107.htm]: http://www.linuxidc.com/Linux/2014-11/109107.htm
[Link 1]: http://www.linuxidc.com/Linux/2013-10/91050.htm
[Link 2]: http://www.linuxidc.com/down.aspx?id=1020
[http_www.linuxidc.com_Linux_2015-02_113139.htm]: http://www.linuxidc.com/Linux/2015-02/113139.htm
[linux]: /images/20220721/87e64c1c0b024806af31c8eb51661ee3.png
[linux 1]: http://www.linuxidc.com/