4.7 KiB

Raw Blame History

title	description	keywords
info	The info command description and usage	display, docker, information

info

Usage:  docker info [OPTIONS]

Display system-wide information

Options:
  -f, --format string   Format the output using the given Go template
      --help            Print usage

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

Show output

The example below shows the output for a daemon running on Ubuntu Linux, using the overlay2 storage driver. As can be seen in the output, additional information about the overlay2 storage driver is shown:

$ docker info

Client:
 Context:    default
 Debug Mode: false
 Plugins:
  buildx: Docker Buildx (Docker Inc.)
    Version:  v0.8.2
    Path:     /usr/libexec/docker/cli-plugins/docker-buildx
  compose: Docker Compose (Docker Inc.)
    Version:  v2.6.0
    Path:     /usr/libexec/docker/cli-plugins/docker-compose
  scan: Docker Scan (Docker Inc.)
    Version:  v0.17.0
    Path:     /usr/libexec/docker/cli-plugins/docker-scan

Server:
 Containers: 14
  Running: 3
  Paused: 1
  Stopped: 10
 Images: 52
 Server Version: 22.06.0
 Storage Driver: overlay2
  Backing Filesystem: extfs
  Supports d_type: true
  Using metacopy: false
  Native Overlay Diff: true
  userxattr: false
 Logging Driver: json-file
 Cgroup Driver: systemd
 Cgroup Version: 2
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
 Swarm: inactive
 Runtimes: io.containerd.runc.v2 io.containerd.runtime.v1.linux runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: 212e8b6fa2f44b9c21b2798135fc6fb7c53efc16
 runc version: v1.1.1-0-g52de29d
 init version: de40ad0
 Security Options:
  apparmor
  seccomp
   Profile: builtin
  cgroupns
 Kernel Version: 5.15.0-25-generic
 Operating System: Ubuntu 22.04 LTS
 OSType: linux
 Architecture: x86_64
 CPUs: 1
 Total Memory: 991.7 MiB
 Name: ip-172-30-0-91.ec2.internal
 ID: 4cee4408-10d2-4e17-891c-a41736ac4536
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 Username: gordontheturtle
 Registry: https://index.docker.io/v1/
 Experimental: false
 Insecure registries:
  myinsecurehost:5000
  127.0.0.0/8
 Live Restore Enabled: false

Format the output (--format)

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, ...}

Run `docker info` on Windows

Here is a sample output for a daemon running on Windows Server:

C:\> docker info

Client:
 Context:    default
 Debug Mode: false
 Plugins:
  buildx: Docker Buildx (Docker Inc., v0.8.2-docker)
  compose: Docker Compose (Docker Inc., v2.6.0)
  scan: Docker Scan (Docker Inc., v0.17.0)

Server:
 Containers: 1
  Running: 0
  Paused: 0
  Stopped: 1
 Images: 17
 Server Version: 20.10.16
 Storage Driver: windowsfilter
 Logging Driver: json-file
 Plugins:
  Volume: local
  Network: ics internal l2bridge l2tunnel nat null overlay private transparent
  Log: awslogs etwlogs fluentd gcplogs gelf json-file local logentries splunk syslog
 Swarm: inactive
 Default Isolation: process
 Kernel Version: 10.0 20348 (20348.1.amd64fre.fe_release.210507-1500)
 Operating System: Microsoft Windows Server Version 21H2 (OS Build 20348.707)
 OSType: windows
 Architecture: x86_64
 CPUs: 8
 Total Memory: 3.999 GiB
 Name: WIN-V0V70C0LU5P
 ID: 2880d38d-464e-4d01-91bd-c76f33ba3981
 Docker Root Dir: C:\ProgramData\docker
 Debug Mode: false
 Registry: https://index.docker.io/v1/
 Experimental: true
 Insecure Registries:
  myregistry:5000
  127.0.0.0/8
 Registry Mirrors:
   http://192.168.1.2/
   http://registry-mirror.example.com:5000/
 Live Restore Enabled: false

4.7 KiB Raw Blame History