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characters

描述

顯示系統(tǒng)范圍內(nèi)的信息

用法

docker info [OPTIONS]

選項(xiàng)

名字，簡(jiǎn)寫

默認(rèn)

描述

--format, -f


使用給定的Go模板格式化輸出

父命令

命令

描述

docker

Docker CLI的基本命令。

擴(kuò)展描述

此命令顯示有關(guān) Docker 安裝的系統(tǒng)范圍信息。顯示的信息包括內(nèi)核版本，容器數(shù)量和圖像。顯示的圖像數(shù)量是唯一圖像的數(shù)量。用不同名稱標(biāo)記的相同圖像只計(jì)算一次。

如果指定了格式，則將執(zhí)行給定模板而不是默認(rèn)格式。Go 的文本/模板包描述了格式的所有細(xì)節(jié)。

根據(jù)使用的存儲(chǔ)驅(qū)動(dòng)程序，可以顯示其他信息，例如池名稱，數(shù)據(jù)文件，元數(shù)據(jù)文件，使用的數(shù)據(jù)空間，總數(shù)據(jù)空間，使用的元數(shù)據(jù)空間以及總元數(shù)據(jù)空間。

數(shù)據(jù)文件是存儲(chǔ)圖像的位置，元數(shù)據(jù)文件是存儲(chǔ)關(guān)于這些圖像的元數(shù)據(jù)的位置。當(dāng)?shù)谝淮芜\(yùn)行時(shí)，Docker 會(huì)從/var/lib/docker掛載的卷上可用的空間中分配一定數(shù)量的數(shù)據(jù)空間和元數(shù)據(jù)空間。

實(shí)例

顯示輸出

以下示例顯示了使用devicemapper存儲(chǔ)驅(qū)動(dòng)程序在 Red Hat Enterprise Linux 上運(yùn)行的守護(hù)程序的輸出。從輸出中可以看出，顯示了有關(guān)devicemapper存儲(chǔ)驅(qū)動(dòng)程序的附加信息：

$ docker info

Containers: 14
 Running: 3
 Paused: 1
 Stopped: 10Images: 52Server Version: 1.10.3Storage 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-0.2Logging 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: 1Total 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): falseDebug mode (server): falseUsername: gordontheturtle
Registry: https://index.docker.io/v1/Insecure registries:
 myinsecurehost:5000 127.0.0.0/8

顯示調(diào)試輸出

以下是在 Ubuntu 上運(yùn)行的守護(hù)進(jìn)程的示例輸出，使用 overlay2 存儲(chǔ)驅(qū)動(dòng)程序和屬于雙節(jié)點(diǎn)群集的節(jié)點(diǎn)：

$ docker -D info

Containers: 14
 Running: 3
 Paused: 1
 Stopped: 10Images: 52Server Version: 1.13.0Storage Driver: overlay2
 Backing Filesystem: extfs
 Supports d_type: true
 Native Overlay Diff: falseLogging 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
 Root Rotation In Progress: false
 Node Address: 172.16.66.128 172.16.66.129
 Manager Addresses:  172.16.66.128:2477Runtimes: 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: defaultKernel Version: 4.4.0-31-generic
Operating System: Ubuntu 16.04.1 LTS
OSType: linux
Architecture: x86_64
CPUs: 2Total 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): trueDebug Mode (server): true
 File Descriptors: 30
 Goroutines: 123
 System Time: 2016-11-12T17:24:37.955404361-08:00
 EventsListeners: 0Http Proxy: http://test:test@proxy.example.com:8080Https Proxy: https://test:test@proxy.example.com:8080No 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=trueExperimental: falseInsecure Registries: 127.0.0.0/8Registry Mirrors:
  http://192.168.1.2/
  http://registry-mirror.example.com:5000/Live Restore Enabled: false

全局-D選項(xiàng)會(huì)導(dǎo)致所有docker命令輸出調(diào)試信息。

格式化輸出

還可以指定輸出格式：

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

在Windows上運(yùn)行docker info

以下是在 Windows Server 2016 上運(yùn)行的守護(hù)程序的示例輸出：

E:\docker>docker info

Containers: 1
 Running: 0
 Paused: 0
 Stopped: 1Images: 17Server Version: 1.13.0Storage Driver: windowsfilter
 Windows:Logging Driver: json-file
Plugins:
 Volume: local
 Network: nat null overlay
Swarm: inactive
Default Isolation: process
Kernel Version: 10.0 14393 (14393.206.amd64fre.rs1_release.160912-1937)Operating System: Windows Server 2016 Datacenter
OSType: windows
Architecture: x86_64
CPUs: 8Total Memory: 3.999 GiB
Name: WIN-V0V70C0LU5P
ID: NYMS:B5VK:UMSL:FVDZ:EWB5:FKVK:LPFL:FJMQ:H6FT:BZJ6:L2TD:XH62
Docker Root Dir: C:\control
Debug Mode (client): falseDebug Mode (server): falseRegistry: https://index.docker.io/v1/Insecure Registries: 127.0.0.0/8Registry Mirrors:
  http://192.168.1.2/
  http://registry-mirror.example.com:5000/Live Restore Enabled: false
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