Docker CLI docker info 常用命令

1、docker info 简介

docker info是用于显示 Docker 系统的详细信息，包括 Docker 守护进程、容器数量、镜像数量、存储驱动程序、内核版本等。该命令可以帮助我们快速了解当前系统的 Docker 配置和状态。这个命令会显示系统范围内关于Docker安装的信息。显示的信息包括内核版本、容器数量和映像。显示的镜像数量是唯一镜像的数量。相同的镜像被标记为不同的名称只计算一次。如果指定了格式，则执行给定的模板，而不是默认格式。Go的text/template包描述了该格式的所有细节。根据使用的存储驱动，可以显示额外的信息，如存储池名称、数据文件、元数据文件、已使用的数据空间、总数据空间、已使用的元数据空间和总元数据空间。数据文件是存储镜像的地方，元数据文件是存储这些镜像的元数据的地方。第一次运行时，Docker会从挂载/var/lib/docker的卷上的可用空间中分配一定数量的数据空间和元数据空间。

2、docker info 语法

docker info [OPTIONS]

参考文档：https://docs.docker.com/engine/reference/commandline/info/

3、docker import 命令

1）显示输出

docker info

Client:
 Context:    default
 Debug Mode: false
 Plugins:
  buildx: Docker Buildx (Docker Inc.)
    Version:  v0.10.4
    Path:     /usr/libexec/docker/cli-plugins/docker-buildx
  compose: Docker Compose (Docker Inc.)
    Version:  v2.17.2
    Path:     /usr/libexec/docker/cli-plugins/docker-compose

Server:
 Containers: 14
  Running: 3
  Paused: 1
  Stopped: 10
 Images: 52
 Server Version: 23.0.3
 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 runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: 2806fc1057397dbaeefbea0e4e17bddfbd388f38
 runc version: v1.1.5-0-gf19387a
 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

2）格式化输出 (--format)

docker info --format '{{json .}}'

{"ID":"4cee4408-10d2-4e17-891c-a41736ac4536","Containers":14, ...}

3）在Windows上运行docker info

C:\> docker info

Client:
 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 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）查看更详细的信息，可以使用 -v 参数

docker info -v

4、命令选项