246 lines
6.5 KiB
Markdown
246 lines
6.5 KiB
Markdown
---
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title: "info"
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description: "The info command description and usage"
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keywords: "display, docker, information"
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---
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<!-- This file is maintained within the docker/cli GitHub
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repository at https://github.com/docker/cli/. Make all
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pull requests against that repo. If you see this file in
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another repository, consider it read-only there, as it will
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periodically be overwritten by the definitive file. Pull
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requests which include edits to this file in other repositories
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will be rejected.
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-->
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# info
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```markdown
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Usage: docker info [OPTIONS]
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Display system-wide information
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Options:
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-f, --format string Format the output using the given Go template
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--help Print usage
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```
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## Description
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This command displays system wide information regarding the Docker installation.
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Information displayed includes the kernel version, number of containers and images.
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The number of images shown is the number of unique images. The same image tagged
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under different names is counted only once.
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If a format is specified, the given template will be executed instead of the
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default format. Go's [text/template](http://golang.org/pkg/text/template/) package
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describes all the details of the format.
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Depending on the storage driver in use, additional information can be shown, such
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as pool name, data file, metadata file, data space used, total data space, metadata
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space used, and total metadata space.
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The data file is where the images are stored and the metadata file is where the
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meta data regarding those images are stored. When run for the first time Docker
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allocates a certain amount of data space and meta data space from the space
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available on the volume where `/var/lib/docker` is mounted.
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## Examples
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### Show output
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The example below shows the output for a daemon running on Red Hat Enterprise Linux,
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using the `devicemapper` storage driver. As can be seen in the output, additional
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information about the `devicemapper` storage driver is shown:
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```bash
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$ docker info
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Containers: 14
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Running: 3
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Paused: 1
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Stopped: 10
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Images: 52
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Server Version: 1.10.3
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Storage Driver: devicemapper
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Pool Name: docker-202:2-25583803-pool
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Pool Blocksize: 65.54 kB
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Base Device Size: 10.74 GB
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Backing Filesystem: xfs
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Data file: /dev/loop0
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Metadata file: /dev/loop1
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Data Space Used: 1.68 GB
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Data Space Total: 107.4 GB
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Data Space Available: 7.548 GB
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Metadata Space Used: 2.322 MB
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Metadata Space Total: 2.147 GB
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Metadata Space Available: 2.145 GB
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Udev Sync Supported: true
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Deferred Removal Enabled: false
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Deferred Deletion Enabled: false
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Deferred Deleted Device Count: 0
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Data loop file: /var/lib/docker/devicemapper/devicemapper/data
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Metadata loop file: /var/lib/docker/devicemapper/devicemapper/metadata
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Library Version: 1.02.107-RHEL7 (2015-12-01)
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Execution Driver: native-0.2
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Logging Driver: json-file
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Plugins:
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Volume: local
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Network: null host bridge
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Kernel Version: 3.10.0-327.el7.x86_64
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Operating System: Red Hat Enterprise Linux Server 7.2 (Maipo)
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OSType: linux
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Architecture: x86_64
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CPUs: 1
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Total Memory: 991.7 MiB
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Name: ip-172-30-0-91.ec2.internal
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ID: I54V:OLXT:HVMM:TPKO:JPHQ:CQCD:JNLC:O3BZ:4ZVJ:43XJ:PFHZ:6N2S
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Docker Root Dir: /var/lib/docker
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Debug mode (client): false
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Debug mode (server): false
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Username: gordontheturtle
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Registry: https://index.docker.io/v1/
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Insecure registries:
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myinsecurehost:5000
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127.0.0.0/8
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```
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### Show debugging output
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Here is a sample output for a daemon running on Ubuntu, using the overlay2
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storage driver and a node that is part of a 2-node swarm:
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```bash
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$ docker -D info
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Containers: 14
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Running: 3
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Paused: 1
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Stopped: 10
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Images: 52
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Server Version: 1.13.0
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Storage Driver: overlay2
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Backing Filesystem: extfs
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Supports d_type: true
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Native Overlay Diff: false
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Logging Driver: json-file
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Cgroup Driver: cgroupfs
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Plugins:
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Volume: local
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Network: bridge host macvlan null overlay
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Swarm: active
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NodeID: rdjq45w1op418waxlairloqbm
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Is Manager: true
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ClusterID: te8kdyw33n36fqiz74bfjeixd
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Managers: 1
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Nodes: 2
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Orchestration:
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Task History Retention Limit: 5
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Raft:
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Snapshot Interval: 10000
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Number of Old Snapshots to Retain: 0
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Heartbeat Tick: 1
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Election Tick: 3
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Dispatcher:
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Heartbeat Period: 5 seconds
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CA Configuration:
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Expiry Duration: 3 months
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Root Rotation In Progress: false
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Node Address: 172.16.66.128 172.16.66.129
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Manager Addresses:
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172.16.66.128:2477
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Runtimes: runc
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Default Runtime: runc
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Init Binary: docker-init
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containerd version: 8517738ba4b82aff5662c97ca4627e7e4d03b531
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runc version: ac031b5bf1cc92239461125f4c1ffb760522bbf2
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init version: N/A (expected: v0.13.0)
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Security Options:
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apparmor
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seccomp
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Profile: default
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Kernel Version: 4.4.0-31-generic
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Operating System: Ubuntu 16.04.1 LTS
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OSType: linux
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Architecture: x86_64
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CPUs: 2
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Total Memory: 1.937 GiB
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Name: ubuntu
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ID: H52R:7ZR6:EIIA:76JG:ORIY:BVKF:GSFU:HNPG:B5MK:APSC:SZ3Q:N326
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Docker Root Dir: /var/lib/docker
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Debug Mode (client): true
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Debug Mode (server): true
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File Descriptors: 30
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Goroutines: 123
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System Time: 2016-11-12T17:24:37.955404361-08:00
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EventsListeners: 0
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Http Proxy: http://test:test@proxy.example.com:8080
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Https Proxy: https://test:test@proxy.example.com:8080
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No Proxy: localhost,127.0.0.1,docker-registry.somecorporation.com
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Registry: https://index.docker.io/v1/
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WARNING: No swap limit support
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Labels:
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storage=ssd
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staging=true
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Experimental: false
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Insecure Registries:
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127.0.0.0/8
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Registry Mirrors:
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http://192.168.1.2/
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http://registry-mirror.example.com:5000/
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Live Restore Enabled: false
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```
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The global `-D` option causes all `docker` commands to output debug information.
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### Format the output
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You can also specify the output format:
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```bash
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$ docker info --format '{{json .}}'
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{"ID":"I54V:OLXT:HVMM:TPKO:JPHQ:CQCD:JNLC:O3BZ:4ZVJ:43XJ:PFHZ:6N2S","Containers":14, ...}
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```
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### Run `docker info` on Windows
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Here is a sample output for a daemon running on Windows Server 2016:
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```none
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E:\docker>docker info
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Containers: 1
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Running: 0
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Paused: 0
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Stopped: 1
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Images: 17
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Server Version: 1.13.0
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Storage Driver: windowsfilter
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Windows:
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Logging Driver: json-file
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Plugins:
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Volume: local
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Network: nat null overlay
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Swarm: inactive
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Default Isolation: process
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Kernel Version: 10.0 14393 (14393.206.amd64fre.rs1_release.160912-1937)
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Operating System: Windows Server 2016 Datacenter
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OSType: windows
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Architecture: x86_64
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CPUs: 8
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Total Memory: 3.999 GiB
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Name: WIN-V0V70C0LU5P
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ID: NYMS:B5VK:UMSL:FVDZ:EWB5:FKVK:LPFL:FJMQ:H6FT:BZJ6:L2TD:XH62
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Docker Root Dir: C:\control
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Debug Mode (client): false
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Debug Mode (server): false
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Registry: https://index.docker.io/v1/
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Insecure Registries:
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127.0.0.0/8
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Registry Mirrors:
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http://192.168.1.2/
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http://registry-mirror.example.com:5000/
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Live Restore Enabled: false
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```
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