NAME

       docker-system-info - Display system-wide information

SYNOPSIS

       docker system info [OPTIONS]

DESCRIPTION

       This command displays system wide information regarding the Docker installation.
       Information displayed includes the kernel version, number of containers and images.  The
       number of images shown is the number of unique images. The same image tagged under
       different names is counted only once.

       If a format is specified, the given template will be executed instead of the default
       format. Go's text/template package describes all the details of the format.

       Depending on the storage driver in use, additional information can be shown, such as pool
       name, data file, metadata file, data space used, total data space, metadata space used,
       and total metadata space.

       The data file is where the images are stored and the metadata file is where the meta data
       regarding those images are stored. When run for the first time Docker allocates a certain
       amount of data space and meta data space from the space available on the volume where
       /var/lib/docker is mounted.

EXAMPLES

Display Docker system information

       Here is a sample output for a daemon running on Ubuntu, using the overlay2 storage driver:

              $ docker -D info
              Containers: 14
               Running: 3
               Paused: 1
               Stopped: 10
              Images: 52
              Server Version: 1.13.0
              Storage Driver: overlay2
               Backing Filesystem: extfs
               Supports d_type: true
               Native Overlay Diff: false
              Logging Driver: json-file
              Cgroup Driver: cgroupfs
              Plugins:
               Volume: local
               Network: bridge host macvlan null overlay
              Swarm: active
               NodeID: rdjq45w1op418waxlairloqbm
               Is Manager: true
               ClusterID: te8kdyw33n36fqiz74bfjeixd
               Managers: 1
               Nodes: 2
               Orchestration:
                Task History Retention Limit: 5
               Raft:
                Snapshot Interval: 10000
                Number of Old Snapshots to Retain: 0
                Heartbeat Tick: 1
                Election Tick: 3
               Dispatcher:
                Heartbeat Period: 5 seconds
               CA Configuration:
                Expiry Duration: 3 months
               Node Address: 172.16.66.128 172.16.66.129
               Manager Addresses:
                172.16.66.128:2477
              Runtimes: runc
              Default Runtime: runc
              Init Binary: docker-init
              containerd version: 8517738ba4b82aff5662c97ca4627e7e4d03b531
              runc version: ac031b5bf1cc92239461125f4c1ffb760522bbf2
              init version: N/A (expected: v0.13.0)
              Security Options:
               apparmor
               seccomp
                Profile: default
              Kernel Version: 4.4.0-31-generic
              Operating System: Ubuntu 16.04.1 LTS
              OSType: linux
              Architecture: x86_64
              CPUs: 2
              Total Memory: 1.937 GiB
              Name: ubuntu
              ID: H52R:7ZR6:EIIA:76JG:ORIY:BVKF:GSFU:HNPG:B5MK:APSC:SZ3Q:N326
              Docker Root Dir: /var/lib/docker
              Debug Mode (client): true
              Debug Mode (server): true
               File Descriptors: 30
               Goroutines: 123
               System Time: 2016-11-12T17:24:37.955404361-08:00
               EventsListeners: 0
              Http Proxy: http://test:test@proxy.example.com:8080
              Https Proxy: https://test:test@proxy.example.com:8080
              No Proxy: localhost,127.0.0.1,docker-registry.somecorporation.com
              Registry: https://index.docker.io/v1/
              WARNING: No swap limit support
              Labels:
               storage=ssd
               staging=true
              Experimental: false
              Insecure Registries:
               127.0.0.0/8
              Registry Mirrors:
                http://192.168.1.2/
                http://registry-mirror.example.com:5000/
              Live Restore Enabled: false

       The global -D option tells all docker commands to output debug information.

       The example below shows the output for a daemon running on Red Hat Enterprise Linux, using
       the devicemapper storage driver. As can be seen in the output, additional information
       about the devicemapper storage driver is shown:

              $ docker info
              Containers: 14
               Running: 3
               Paused: 1
               Stopped: 10
              Untagged Images: 52
              Server Version: 1.10.3
              Storage Driver: devicemapper
               Pool Name: docker-202:2-25583803-pool
               Pool Blocksize: 65.54 kB
               Base Device Size: 10.74 GB
               Backing Filesystem: xfs
               Data file: /dev/loop0
               Metadata file: /dev/loop1
               Data Space Used: 1.68 GB
               Data Space Total: 107.4 GB
               Data Space Available: 7.548 GB
               Metadata Space Used: 2.322 MB
               Metadata Space Total: 2.147 GB
               Metadata Space Available: 2.145 GB
               Udev Sync Supported: true
               Deferred Removal Enabled: false
               Deferred Deletion Enabled: false
               Deferred Deleted Device Count: 0
               Data loop file: /var/lib/docker/devicemapper/devicemapper/data
               Metadata loop file: /var/lib/docker/devicemapper/devicemapper/metadata
               Library Version: 1.02.107-RHEL7 (2015-12-01)
              Execution Driver: native-0.2
              Logging Driver: json-file
              Plugins:
               Volume: local
               Network: null host bridge
              Kernel Version: 3.10.0-327.el7.x86_64
              Operating System: Red Hat Enterprise Linux Server 7.2 (Maipo)
              OSType: linux
              Architecture: x86_64
              CPUs: 1
              Total Memory: 991.7 MiB
              Name: ip-172-30-0-91.ec2.internal
              ID: I54V:OLXT:HVMM:TPKO:JPHQ:CQCD:JNLC:O3BZ:4ZVJ:43XJ:PFHZ:6N2S
              Docker Root Dir: /var/lib/docker
              Debug mode (client): false
              Debug mode (server): false
              Username: gordontheturtle
              Registry: https://index.docker.io/v1/
              Insecure registries:
               myinsecurehost:5000
               127.0.0.0/8

       You can also specify the output format:

              $ docker info --format '{{json .}}'
              {"ID":"I54V:OLXT:HVMM:TPKO:JPHQ:CQCD:JNLC:O3BZ:4ZVJ:43XJ:PFHZ:6N2S","Containers":14, ...}

OPTIONS

       -f, --format=""
           Format the output using the given Go template

       -h, --help[=false]
           help for info

SEE ALSO

       docker-system(1)