备份运行的Docker容器？ [英] Backup a running Docker container?

问题描述

是否可以备份正在运行的Docker容器？ export 命令是否适合这样做？

Is it possible to backup a running Docker container? Is the export command suitable for doing that?

推荐答案

朋友在评论中

Hi Slava，抱歉您的问题已关闭。为了记录，Slava正在谈论docker.io，一个linux容器的运行时。是的， docker export 是一种合适的方法。它将生成整个容器文件系统状态的tarball，并将其转储到stdout上。所以

Hi Slava, sorry that your question was closed. For the record, Slava is talking about docker.io, a runtime for linux containers. Yes, docker export is a suitable approach. It will generate a tarball of your entire container filesystem state, and dump it on stdout. So

docker export $ CONTAINER_ID> $ CONTAINER_ID-backup.tar

将产生可用的压缩包。您可以使用

will yield a usable tarball. You can re-import the tarball with

docker import - slava / $ CONTAINER_ID-backup& $ CONTAINER_ID-backup.tar

注意原始元数据（例如原始图像的ID）将丢失。这在Docker的将来版本中应该是固定的。
- Solomon Hykes 4月2日13日6:35

Note the original metadata (eg id of the original image) will be lost. This should be fixed in future versions of docker. – Solomon Hykes Apr 2 '13 at 6:35

在这里添加一个可以从摘要中找到问题的答案。谢谢所罗门！

Adding here so one can find from summary that question was answered. Thanks Solomon!

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