docke数据卷容器

浅浅的花香味﹌ 2023-07-02 15:28 5阅读 0赞

## **docke**数据卷容器 ##

**1.是什么 ？**

命名的容器挂载数据卷，其他容器通过挂载这个（父容器）实现数据共享，挂载数据卷的容器，称之为数据卷容器。

**能干嘛？**

容器的持久化 容器间继承+数据共享

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3oxMzYxNTQ4MDczNw_size_16_color_FFFFFF_t_70][]

** 2.数据卷的添加**

容器内添加

**2.1直接命令添加**

![20200130230649244.png][]

**2.1.1  docker run -it -v 宿主机绝对路径目录:/容器内目录 镜像名**

**docker run -it -v /www/centos:/www/centos 470671670cac**

\-v 没有文件会自动创建

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3oxMzYxNTQ4MDczNw_size_16_color_FFFFFF_t_70 1][]

**2.1.2 查看数据卷是否挂载成功**

docker inspect 容器id

![20200130234313775.png][]

**2.1.3 容器和宿主机之间数据共享 （挂载成功就实现了共享）**

在宿主机创建的文件容器可以读到  容器创建的文件宿主机也可以了读取

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3oxMzYxNTQ4MDczNw_size_16_color_FFFFFF_t_70 2][]

**2.1.4 容器停止退出后，主机修改后数据是否同步  **

答：同步

**2.1.5 docker带权限**

**docker run -it -v 宿主机绝对路径目录:/容器内目录:ro 镜像名   ( ro **Read only只读权限**)**

**docker run -it -v /www/centos:/www/centos:ro 470671670cac   容器只有读权限，**

**2.2DockerFile添加**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3oxMzYxNTQ4MDczNw_size_16_color_FFFFFF_t_70 3][]

2.2.1查看 [docker hub链接][docker hub] docker hub上搜索mysql镜像查看dockerfile

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3oxMzYxNTQ4MDczNw_size_16_color_FFFFFF_t_70 4][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3oxMzYxNTQ4MDczNw_size_16_color_FFFFFF_t_70 5][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3oxMzYxNTQ4MDczNw_size_16_color_FFFFFF_t_70 6][]

看源码查看需要挂载在的文件

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3oxMzYxNTQ4MDczNw_size_16_color_FFFFFF_t_70 7][]

2.2.2 [官方说明][Link 1]https://docs.docker.com/engine/reference/commandline/volume\_create/\#usage

docker volume create [OPTIONS] [VOLUME]

2.2.3容器间传递共享

可以看官方提供的例子

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3oxMzYxNTQ4MDczNw_size_16_color_FFFFFF_t_70 8][]

容器之间配置信息传递，数据卷的生命周期一直持续到没有容器使用它为止

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3oxMzYxNTQ4MDczNw_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20200130224714255.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3oxMzYxNTQ4MDczNw==,size_16,color_FFFFFF,t_70
[20200130230649244.png]: https://img-blog.csdnimg.cn/20200130230649244.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3oxMzYxNTQ4MDczNw_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20200130233814943.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3oxMzYxNTQ4MDczNw==,size_16,color_FFFFFF,t_70
[20200130234313775.png]: https://img-blog.csdnimg.cn/20200130234313775.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3oxMzYxNTQ4MDczNw_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20200130235435321.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3oxMzYxNTQ4MDczNw==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3oxMzYxNTQ4MDczNw_size_16_color_FFFFFF_t_70 3]: https://img-blog.csdnimg.cn/20200131091701684.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3oxMzYxNTQ4MDczNw==,size_16,color_FFFFFF,t_70
[docker hub]: https://hub.docker.com/search?q=mysql&type=image
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3oxMzYxNTQ4MDczNw_size_16_color_FFFFFF_t_70 4]: https://img-blog.csdnimg.cn/20200131091805488.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3oxMzYxNTQ4MDczNw==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3oxMzYxNTQ4MDczNw_size_16_color_FFFFFF_t_70 5]: https://img-blog.csdnimg.cn/20200131092023297.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3oxMzYxNTQ4MDczNw==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3oxMzYxNTQ4MDczNw_size_16_color_FFFFFF_t_70 6]: https://img-blog.csdnimg.cn/20200131092103220.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3oxMzYxNTQ4MDczNw==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3oxMzYxNTQ4MDczNw_size_16_color_FFFFFF_t_70 7]: https://img-blog.csdnimg.cn/20200131100131655.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3oxMzYxNTQ4MDczNw==,size_16,color_FFFFFF,t_70
[Link 1]: https://docs.docker.com/engine/reference/commandline/volume_create/#usage
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3oxMzYxNTQ4MDczNw_size_16_color_FFFFFF_t_70 8]: https://img-blog.csdnimg.cn/20200131111609977.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3oxMzYxNTQ4MDczNw==,size_16,color_FFFFFF,t_70