Docker主机重新启动时会发生什么？ [英] What happens when the docker host restarts?

问题描述

关闭并重新启动Docker主机时会发生什么？

What happens when the docker host is shut down and restarted?

• 正在运行的映像会重新启动吗？


• 对这些映像所做的更改是否会保留，还是会生成该映像的新实例并丢失更改？


• docker是否有任何配置选项，例如在启动时自动执行的图像列表以及运行图像的选项？哪里？如果没有，我想只能使用docker命令行来更改docker状态。该状态存储在哪里（我想在 / var 中的某个位置）。

• will the images that were running be restarted?
• will the changes that were made to those images persist, or will a new instance of the image be spawned and changes be lost?
• does docker have any configuration option, such as the list of images to be automatically executed at startup and the options to run the images? Where? If not, I suppose only the docker command line can be used to alter docker state. Where is that state stored (I suppose somewhere in /var). This could be useful to backup the docker state.

（我很想在常见问题解答）

推荐答案

正在运行的映像是否将重新启动？

will the images that were running be restarted?

如果通过，守护进程重新启动时，Docker将重新启动容器。 -r = True 到启动选项。在Ubuntu上，您可以通过修改 / etc / default / docker DOCKER_OPTS =-r = true 永久完成此操作>。

Docker will restart containers when the daemon restarts if you pass -r=True to the startup options. On Ubuntu, you can accomplish this permanently by modifying DOCKER_OPTS="-r=true" in /etc/default/docker.

对这些图像所做的更改是否会保留，还是会产生该图像的新实例并丢失更改？

will the changes that were made to those images persist, or will a new instance of the image be spawned and changes be lost?

容器将被停止。在容器下次启动时，对容器的任何修改仍将存在，如果如上所述提供 -r = true ，则在docker守护程序启动时将自动发生。

Containers will be stopped. Any modifications to the container will still be present when the container next starts, which will happen automatically when the docker daemon starts if -r=true is provided as mentioned above.

主机系统上存储的docker配置在哪里？

where is the docker configuration stored on the host system?

本身没有配置文件。您可以在 / etc / default / docker 中调整upstart / init选项。

There is no configuration file per se. You can tune the upstart/init options in /etc/default/docker.

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