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In previous versions of the Docker API, `system prune --volumes` and `volume prune` would remove all dangling volumes. With API v1.42, this was changed so that only anonymous volumes would be removed unless the all filter was specified. Some of the docs were updated in #4218, however, there were a couple of places left that didn't make the anonymous vs named volumes distinction clear. This replaces #4079, which was bitrotted by #4218. See also #4028. Closes #4079. Signed-off-by: Ed Morley <501702+edmorley@users.noreply.github.com>
136 lines
5.4 KiB
Markdown
136 lines
5.4 KiB
Markdown
# system prune
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<!---MARKER_GEN_START-->
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Remove unused data
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### Options
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| Name | Type | Default | Description |
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|:----------------------|:---------|:--------|:---------------------------------------------------|
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| `-a`, `--all` | | | Remove all unused images not just dangling ones |
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| [`--filter`](#filter) | `filter` | | Provide filter values (e.g. `label=<key>=<value>`) |
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| `-f`, `--force` | | | Do not prompt for confirmation |
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| `--volumes` | | | Prune anonymous volumes |
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<!---MARKER_GEN_END-->
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## Description
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Remove all unused containers, networks, images (both dangling and unreferenced),
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and optionally, volumes.
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## Examples
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```console
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$ docker system prune
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WARNING! This will remove:
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- all stopped containers
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- all networks not used by at least one container
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- all dangling images
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- all build cache
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Are you sure you want to continue? [y/N] y
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Deleted Containers:
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f44f9b81948b3919590d5f79a680d8378f1139b41952e219830a33027c80c867
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792776e68ac9d75bce4092bc1b5cc17b779bc926ab04f4185aec9bf1c0d4641f
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Deleted Networks:
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network1
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network2
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Deleted Images:
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untagged: hello-world@sha256:f3b3b28a45160805bb16542c9531888519430e9e6d6ffc09d72261b0d26ff74f
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deleted: sha256:1815c82652c03bfd8644afda26fb184f2ed891d921b20a0703b46768f9755c57
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deleted: sha256:45761469c965421a92a69cc50e92c01e0cfa94fe026cdd1233445ea00e96289a
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Total reclaimed space: 1.84kB
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```
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By default, volumes are not removed to prevent important data from being
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deleted if there is currently no container using the volume. Use the `--volumes`
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flag when running the command to prune anonymous volumes as well:
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```console
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$ docker system prune -a --volumes
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WARNING! This will remove:
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- all stopped containers
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- all networks not used by at least one container
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- all anonymous volumes not used by at least one container
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- all images without at least one container associated to them
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- all build cache
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Are you sure you want to continue? [y/N] y
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Deleted Containers:
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0998aa37185a1a7036b0e12cf1ac1b6442dcfa30a5c9650a42ed5010046f195b
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73958bfb884fa81fa4cc6baf61055667e940ea2357b4036acbbe25a60f442a4d
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Deleted Networks:
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my-network-a
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my-network-b
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Deleted Volumes:
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named-vol
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Deleted Images:
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untagged: my-curl:latest
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deleted: sha256:7d88582121f2a29031d92017754d62a0d1a215c97e8f0106c586546e7404447d
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deleted: sha256:dd14a93d83593d4024152f85d7c63f76aaa4e73e228377ba1d130ef5149f4d8b
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untagged: alpine:3.3
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deleted: sha256:695f3d04125db3266d4ab7bbb3c6b23aa4293923e762aa2562c54f49a28f009f
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untagged: alpine:latest
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deleted: sha256:ee4603260daafe1a8c2f3b78fd760922918ab2441cbb2853ed5c439e59c52f96
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deleted: sha256:9007f5987db353ec398a223bc5a135c5a9601798ba20a1abba537ea2f8ac765f
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deleted: sha256:71fa90c8f04769c9721459d5aa0936db640b92c8c91c9b589b54abd412d120ab
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deleted: sha256:bb1c3357b3c30ece26e6604aea7d2ec0ace4166ff34c3616701279c22444c0f3
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untagged: my-jq:latest
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deleted: sha256:6e66d724542af9bc4c4abf4a909791d7260b6d0110d8e220708b09e4ee1322e1
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deleted: sha256:07b3fa89d4b17009eb3988dfc592c7d30ab3ba52d2007832dffcf6d40e3eda7f
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deleted: sha256:3a88a5c81eb5c283e72db2dbc6d65cbfd8e80b6c89bb6e714cfaaa0eed99c548
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Total reclaimed space: 13.5 MB
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```
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### <a name="filter"></a> Filtering (--filter)
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The filtering flag (`--filter`) format is of "key=value". If there is more
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than one filter, then pass multiple flags (e.g., `--filter "foo=bar" --filter "bif=baz"`)
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The currently supported filters are:
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* until (`<timestamp>`) - only remove containers, images, and networks created before given timestamp
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* label (`label=<key>`, `label=<key>=<value>`, `label!=<key>`, or `label!=<key>=<value>`) - only remove containers, images, networks, and volumes with (or without, in case `label!=...` is used) the specified labels.
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The `until` filter can be Unix timestamps, date formatted
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timestamps, or Go duration strings (e.g. `10m`, `1h30m`) computed
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relative to the daemon machine’s time. Supported formats for date
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formatted time stamps include RFC3339Nano, RFC3339, `2006-01-02T15:04:05`,
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`2006-01-02T15:04:05.999999999`, `2006-01-02Z07:00`, and `2006-01-02`. The local
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timezone on the daemon will be used if you do not provide either a `Z` or a
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`+-00:00` timezone offset at the end of the timestamp. When providing Unix
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timestamps enter seconds[.nanoseconds], where seconds is the number of seconds
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that have elapsed since January 1, 1970 (midnight UTC/GMT), not counting leap
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seconds (aka Unix epoch or Unix time), and the optional .nanoseconds field is a
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fraction of a second no more than nine digits long.
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The `label` filter accepts two formats. One is the `label=...` (`label=<key>` or `label=<key>=<value>`),
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which removes containers, images, networks, and volumes with the specified labels. The other
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format is the `label!=...` (`label!=<key>` or `label!=<key>=<value>`), which removes
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containers, images, networks, and volumes without the specified labels.
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## Related commands
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* [volume create](volume_create.md)
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* [volume ls](volume_ls.md)
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* [volume inspect](volume_inspect.md)
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* [volume rm](volume_rm.md)
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* [volume prune](volume_prune.md)
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* [Understand Data Volumes](https://docs.docker.com/storage/volumes/)
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* [system df](system_df.md)
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* [container prune](container_prune.md)
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* [image prune](image_prune.md)
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* [network prune](network_prune.md)
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* [system prune](system_prune.md)
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