Docker命令-system

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命令

docker system

描述

Manage Docker
显示系统信息和管理docker磁盘空间

用法

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docker system df [OPTIONS]
docker system prune [OPTIONS]

选项

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docker system df Options:
  --format          Pretty-print images using a Go template
  --verbose , -v    Show detailed information on space usage

docker system prune Options:
  --all , -a      Remove all unused images not just dangling ones
  --filter        Provide filter values (e.g. 'label=<key>=<value>')
  --force , -f    Do not prompt for confirmation
  --volumes       Prune volumes

注意

无

示例

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$ docker system df
TYPE                TOTAL               ACTIVE              SIZE                RECLAIMABLE
Images              4                   3                   22.8MB              22.65MB (10%)
Containers          3                   1                   3.162kB             1.093kB (34%)
Local Volumes       0                   0                   0B                  0B
Build Cache         0                   0                   0B                  0B

$ docker system df -v
Images space usage:
REPOSITORY           TAG                 IMAGE ID            CREATED             SIZE                SHARED SIZE         UNIQUE SIZE         CONTAINERS
demo_nginx           v2                  8ee210f7ce06        5 days ago          22.65MB             22.65MB             1.095kB             0
demo_nginx           v1                  5f1ab458849a        5 days ago          22.65MB             22.65MB             0B                  1
nginx                1.20.1-alpine       4146b18ae794        6 months ago        22.65MB             22.65MB             0B                  1

Containers space usage:
CONTAINER ID   IMAGE                 COMMAND                  LOCAL VOLUMES   SIZE       CREATED      STATUS                    NAMES
ce2a0c049f9f   demo_nginx:v1         "/docker-entrypoint.…"   0               1.09kB     4 days ago   Exited (0) 18 hours ago   aaa
a8c31015e674   nginx:1.20.1-alpine   "/docker-entrypoint.…"   0               2.07kB     5 days ago   Up 18 hours               nginx

Local Volumes space usage:
VOLUME NAME         LINKS               SIZE

# SHARED SIZE is the amount of space that an image shares with another one (i.e. their common data)
# UNIQUE SIZE is the amount of space that is only used by a given image
# SIZE is the virtual size of the image, it is the sum of SHARED SIZE and UNIQUE SIZE

$ docker system prune
WARNING! This will remove:
  - all stopped containers
  - all networks not used by at least one container
  - all dangling images
  - all dangling build cache

Are you sure you want to continue? [y/N] y
Deleted Containers:
ce2a0c049f9f0b3c57931b439307ebf04e1ac09b96c93bb7a3fd61a84db5b84b

Deleted Networks:
vaultwarden_default

Total reclaimed space: 1.093kB

# 删除所有dangling镜像和未使用的镜像,删除未使用的volumes
$ docker system prune -a --volumes