多个容器共享数据

小咪咪 2023-07-11 12:45 42阅读 0赞

**模型**：![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNTY1MjY3_size_16_color_FFFFFF_t_70][]

**1.创建数据卷容器**

#创c3数据卷容器，/volume目录会在宿主机中创建
    docker run -it --name=c3 -v /volume centos:7

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNTY1MjY3_size_16_color_FFFFFF_t_70 1][]

#查看容器的详细信息
    docker inspect c3

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNTY1MjY3_size_16_color_FFFFFF_t_70 2][]

**2.创建容器c1,c2**

#创建c1容器并将c3数据卷容器 挂载到自己身上
    docker run -it --name=c1 --volumes-from c3 centos:7
    #创建c2容器并将c3数据卷容器 挂载到自己身上
    docker run -it --name=c2 --volumes-from c3 centos:7

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNTY1MjY3_size_16_color_FFFFFF_t_70 3][]  
![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNTY1MjY3_size_16_color_FFFFFF_t_70 4][]

可以看到c1，c2容器中已经存在volume数据卷了，

在c3中创建一个文件，

touch a.txt

去c1,c2容器中的volume文件夹下看

![20200305195713741.png][]

已经有这个数据卷了ok！

并且根据docker inspect c1/c2查看容器信息会发现

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNTY1MjY3_size_16_color_FFFFFF_t_70 5][]

这一部分数据是一样的！！！！！！

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNTY1MjY3_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20200305195914523.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNTY1MjY3,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNTY1MjY3_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20200305194331484.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNTY1MjY3,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNTY1MjY3_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20200305194617126.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNTY1MjY3,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNTY1MjY3_size_16_color_FFFFFF_t_70 3]: https://img-blog.csdnimg.cn/20200305195057956.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNTY1MjY3,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNTY1MjY3_size_16_color_FFFFFF_t_70 4]: https://img-blog.csdnimg.cn/20200305195346690.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNTY1MjY3,size_16,color_FFFFFF,t_70
[20200305195713741.png]: https://img-blog.csdnimg.cn/20200305195713741.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNTY1MjY3_size_16_color_FFFFFF_t_70 5]: https://img-blog.csdnimg.cn/20200305200124989.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNTY1MjY3,size_16,color_FFFFFF,t_70