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these markdown files are not consumed directly in the docs, but only their content is included through the YAML does, so there's no need to have these comments in them Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
243 lines
6.3 KiB
Markdown
243 lines
6.3 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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# 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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Client:
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Debug Mode: false
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Server:
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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: 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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Client:
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Debug Mode: true
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Server:
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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: 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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Client:
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Debug Mode: false
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Server:
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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: 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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