2015-06-21 16:41:38 -04:00
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# pause
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2023-01-06 13:04:05 -05:00
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<!---MARKER_GEN_START-->
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2016-07-07 14:43:18 -04:00
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Pause all processes within one or more containers
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2015-06-21 16:41:38 -04:00
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2023-01-06 13:04:05 -05:00
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### Aliases
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cli: use custom annotation for aliases
Cobra allows for aliases to be defined for a command, but only allows these
to be defined at the same level (for example, `docker image ls` as alias for
`docker image list`). Our CLI has some commands that are available both as a
top-level shorthand as well as `docker <object> <verb>` subcommands. For example,
`docker ps` is a shorthand for `docker container ps` / `docker container ls`.
This patch introduces a custom "aliases" annotation that can be used to print
all available aliases for a command. While this requires these aliases to be
defined manually, in practice the list of aliases rarely changes, so maintenance
should be minimal.
As a convention, we could consider the first command in this list to be the
canonical command, so that we can use this information to add redirects in
our documentation in future.
Before this patch:
docker images --help
Usage: docker images [OPTIONS] [REPOSITORY[:TAG]]
List images
Options:
-a, --all Show all images (default hides intermediate images)
...
With this patch:
docker images --help
Usage: docker images [OPTIONS] [REPOSITORY[:TAG]]
List images
Aliases:
docker image ls, docker image list, docker images
Options:
-a, --all Show all images (default hides intermediate images)
...
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2022-06-28 04:52:25 -04:00
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2023-01-06 13:04:05 -05:00
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`docker container pause`, `docker pause`
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<!---MARKER_GEN_END-->
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2015-10-03 11:56:41 -04:00
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2017-02-07 18:42:48 -05:00
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## Description
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2016-12-15 05:47:57 -05:00
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The `docker pause` command suspends all processes in the specified containers.
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2019-08-18 07:54:29 -04:00
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On Linux, this uses the freezer cgroup. Traditionally, when suspending a process
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the `SIGSTOP` signal is used, which is observable by the process being suspended.
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With the freezer cgroup the process is unaware, and unable to capture,
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that it is being suspended, and subsequently resumed. On Windows, only Hyper-V
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containers can be paused.
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2015-06-21 16:41:38 -04:00
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See the
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2019-08-18 07:54:29 -04:00
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[freezer cgroup documentation](https://www.kernel.org/doc/Documentation/cgroup-v1/freezer-subsystem.txt)
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for further details.
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2016-12-15 05:47:57 -05:00
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2017-02-07 18:42:48 -05:00
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## Examples
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2021-08-21 08:54:14 -04:00
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```console
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$ docker pause my_container
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```
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## Related commands
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2016-12-15 05:47:57 -05:00
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* [unpause](unpause.md)
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