docker system info
内容説明 | Display system-wide information |
---|---|
利用方法 | docker system info [OPTIONS] |
エイリアス | docker info |
内容説明
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.
オプション
オプション | デフォルト | 内容説明 |
---|---|---|
-f, --format | Format output using a custom template: 'json': Print in JSON format 'TEMPLATE': Print output using the given Go template. Refer to https://docs.docker.com/go/formatting/ for more information about formatting output with templates |
利用例
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:
Version: 25.0.0
Context: default
Debug Mode: false
Plugins:
buildx: Docker Buildx (Docker Inc.)
Version: v0.12.1
Path: /usr/local/libexec/docker/cli-plugins/docker-buildx
compose: Docker Compose (Docker Inc.)
Version: v2.24.1
Path: /usr/local/libexec/docker/cli-plugins/docker-compose
Server:
Containers: 14
Running: 3
Paused: 1
Stopped: 10
Images: 52
Server Version: 25.0.0
Storage Driver: overlayfs
driver-type: io.containerd.snapshotter.v1
Logging Driver: json-file
Cgroup Driver: cgroupfs
Cgroup Version: 2
Plugins:
Volume: local
Network: bridge host ipvlan macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local splunk syslog
CDI spec directories:
/etc/cdi
/var/run/cdi
Swarm: inactive
Runtimes: runc io.containerd.runc.v2
Default Runtime: runc
Init Binary: docker-init
containerd version: 71909c1814c544ac47ab91d2e8b84718e517bb99
runc version: v1.1.11-0-g4bccb38
init version: de40ad0
Security Options:
seccomp
Profile: builtin
cgroupns
Kernel Version: 6.5.11-linuxkit
Operating System: Alpine Linux v3.19
OSType: linux
Architecture: aarch64
CPUs: 10
Total Memory: 7.663GiB
Name: 4a7ed206a70d
ID: c20f7230-59a2-4824-a2f4-fda71c982ee6
Docker Root Dir: /var/lib/docker
Debug Mode: false
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
Product License: Community Engine
Format the output (--format)
You can also specify the output format:
$ docker info --format '{{json .}}'
{"ID":"4cee4408-10d2-4e17-891c-a41736ac4536","Containers":14, ...}
Run docker info
on Windows
Here is a sample output for a daemon running on Windows Server:
C:\> docker info
Client: Docker Engine - Community
Version: 24.0.0
Context: default
Debug Mode: false
Plugins:
buildx: Docker Buildx (Docker Inc.)
Version: v0.10.4
Path: C:\Program Files\Docker\cli-plugins\docker-buildx.exe
compose: Docker Compose (Docker Inc.)
Version: v2.17.2
Path: C:\Program Files\Docker\cli-plugins\docker-compose.exe
Server:
Containers: 1
Running: 0
Paused: 0
Stopped: 1
Images: 17
Server Version: 23.0.3
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 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
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