github.com/feiyang21687/docker@v1.5.0/docs/man/docker-info.1.md (about)

     1  % DOCKER(1) Docker User Manuals
     2  % Docker Community
     3  % JUNE 2014
     4  # NAME
     5  docker-info - Display system-wide information
     6  
     7  # SYNOPSIS
     8  **docker info**
     9  [**--help**]
    10  
    11  
    12  # DESCRIPTION
    13  This command displays system wide information regarding the Docker installation.
    14  Information displayed includes the number of containers and images, pool name,
    15  data file, metadata file, data space used, total data space, metadata space used
    16  , total metadata space, execution driver, and the kernel version.
    17  
    18  The data file is where the images are stored and the metadata file is where the
    19  meta data regarding those images are stored. When run for the first time Docker
    20  allocates a certain amount of data space and meta data space from the space
    21  available on the volume where `/var/lib/docker` is mounted.
    22  
    23  # OPTIONS
    24  **--help**
    25    Print usage statement
    26  
    27  # EXAMPLES
    28  
    29  ## Display Docker system information
    30  
    31  Here is a sample output:
    32  
    33      # docker info
    34      Containers: 14
    35      Images: 52
    36      Storage Driver: aufs
    37       Root Dir: /var/lib/docker/aufs
    38       Dirs: 80
    39      Execution Driver: native-0.2
    40      Kernel Version: 3.13.0-24-generic
    41      Operating System: Ubuntu 14.04 LTS
    42      CPUs: 1
    43      Total Memory: 2 GiB
    44  
    45  # HISTORY
    46  April 2014, Originally compiled by William Henry (whenry at redhat dot com)
    47  based on docker.com source material and internal work.
    48  June 2014, updated by Sven Dowideit <SvenDowideit@home.org.au>