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DOCKER(1) JUNE 2014 DOCKER(1)

NAME

docker-inspect - Return low-level information on a container or image

SYNOPSIS

docker inspect [ --help] [ -f|--format[=FORMAT]] CONTAINER|IMAGE [CONTAINER|IMAGE...]

DESCRIPTION

This displays all the information available in Docker for a given container or image. By default, this will render all results in a JSON array. If a format is specified, the given template will be executed for each result.

OPTIONS

--help
Print usage statement
-f, --format=""
Format the output using the given go template.

EXAMPLES

Getting information on a container

To get information on a container use it's ID or instance name: 
#docker inspect 1eb5fabf5a03
[{
   "ID": "1eb5fabf5a03807136561b3c00adcd2992b535d624d5e18b6cdc6a6844d9767b",
   "Created": "2014-04-04T21:33:52.02361335Z",
   "Path": "/usr/sbin/nginx",
   "Args": [],
   "Config": {
        "Hostname": "1eb5fabf5a03",
        "Domainname": "",
        "User": "",
        "Memory": 0,
        "MemorySwap": 0,
        "CpuShares": 0,
        "AttachStdin": false,
        "AttachStdout": false,
        "AttachStderr": false,
        "PortSpecs": null,
        "ExposedPorts": {
            "80/tcp": {
    ,
    "Tty": true,
        "OpenStdin": false,
        "StdinOnce": false,
        "Env": [
           "HOME=/",
       "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
        ],
        "Cmd": [
            "/usr/sbin/nginx"
        ],
        "Dns": null,
        "DnsSearch": null,
        "Image": "summit/nginx",
        "Volumes": null,
        "VolumesFrom": "",
        "WorkingDir": "",
        "Entrypoint": null,
        "NetworkDisabled": false,
        "OnBuild": null,
        "Context": {
           "mount_label": "system_u:object_r:svirt_sandbox_file_t:s0:c0,c650",
       "process_label": "system_u:system_r:svirt_lxc_net_t:s0:c0,c650"
    
    ,
    "State": {
        "Running": true,
        "Pid": 858,
        "ExitCode": 0,
        "StartedAt": "2014-04-04T21:33:54.16259207Z",
        "FinishedAt": "0001-01-01T00:00:00Z",
        "Ghost": false
    ,
    "Image": "df53773a4390e25936f9fd3739e0c0e60a62d024ea7b669282b27e65ae8458e6",
    "Labels": {
        "com.example.vendor": "Acme",
        "com.example.license": "GPL",
        "com.example.version": "1.0"
    ,
    "NetworkSettings": {
        "IPAddress": "172.17.0.2",
        "IPPrefixLen": 16,
        "Gateway": "172.17.42.1",
        "Bridge": "docker0",
        "PortMapping": null,
        "Ports": {
            "80/tcp": [
                {
                    "HostIp": "0.0.0.0",
                    "HostPort": "80"
                
            ]
        
    ,
    "ResolvConfPath": "/etc/resolv.conf",
    "HostnamePath": "/var/lib/docker/containers/1eb5fabf5a03807136561b3c00adcd2992b535d624d5e18b6cdc6a6844d9767b/hostname",
    "HostsPath": "/var/lib/docker/containers/1eb5fabf5a03807136561b3c00adcd2992b535d624d5e18b6cdc6a6844d9767b/hosts",
    "LogPath": "/var/lib/docker/containers/1eb5fabf5a03807136561b3c00adcd2992b535d624d5e18b6cdc6a6844d9767b/1eb5fabf5a03807136561b3c00adcd2992b535d624d5e18b6cdc6a6844d9767b-json.log",
    "Name": "/ecstatic_ptolemy",
    "Driver": "devicemapper",
    "ExecDriver": "native-0.1",
    "Volumes": {,
    "VolumesRW": {,
    "HostConfig": {
    "Binds": null,
        "ContainerIDFile": "",
        "LxcConf": [],
        "Privileged": false,
        "PortBindings": {
            "80/tcp": [
                {
                    "HostIp": "0.0.0.0",
                    "HostPort": "80"
                
            ]
        ,
        "Links": null,
        "PublishAllPorts": false,
        "DriverOptions": {
            "lxc": null
        ,
        "CliAddress": ""

Getting the IP address of a container instance

To get the IP address of a container use: 
# docker inspect --format='{{.NetworkSettings.IPAddress' 1eb5fabf5a03
172.17.0.2

Listing all port bindings

One can loop over arrays and maps in the results to produce simple text output: 
# docker inspect --format='{{range $p, $conf := .NetworkSettings.Ports \
 {{$p -> {{(index $conf 0).HostPort {{end' 1eb5fabf5a03


80/tcp -> 80

Getting information on an image

Use an image's ID or name (e.g., repository/name[:tag]) to get information
on it. 
# docker inspect 58394af37342
[{
    "id": "58394af373423902a1b97f209a31e3777932d9321ef10e64feaaa7b4df609cf9",
    "parent": "8abc22bad04266308ff408ca61cb8f6f4244a59308f7efc64e54b08b496c58db",
    "created": "2014-02-03T16:10:40.500814677Z",
    "container": "f718f19a28a5147da49313c54620306243734bafa63c76942ef6f8c4b4113bc5",
    "container_config": {
        "Hostname": "88807319f25e",
        "Domainname": "",
        "User": "",
        "Memory": 0,
        "MemorySwap": 0,
        "CpuShares": 0,
        "AttachStdin": false,
        "AttachStdout": false,
        "AttachStderr": false,
        "PortSpecs": null,
        "ExposedPorts": null,
        "Tty": false,
        "OpenStdin": false,
        "StdinOnce": false,
        "Env": [
            "HOME=/",
            "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
        ],
        "Cmd": [
            "/bin/sh",
            "-c",
     "#(nop) ADD fedora-20-dummy.tar.xz in /"
        ],
        "Dns": null,
        "DnsSearch": null,
        "Image": "8abc22bad04266308ff408ca61cb8f6f4244a59308f7efc64e54b08b496c58db",
        "Volumes": null,
        "VolumesFrom": "",
        "WorkingDir": "",
        "Entrypoint": null,
        "NetworkDisabled": false,
        "OnBuild": null,
        "Context": null
    ,
    "docker_version": "0.6.3",
    "author": "I P Babble \u003clsm5@ipbabble.com\u003e - ./buildcontainers.sh",
    "config": {
        "Hostname": "88807319f25e",
        "Domainname": "",
        "User": "",
        "Memory": 0,
        "MemorySwap": 0,
        "CpuShares": 0,
        "AttachStdin": false,
        "AttachStdout": false,
        "AttachStderr": false,
        "PortSpecs": null,
        "ExposedPorts": null,
        "Tty": false,
        "OpenStdin": false,
        "StdinOnce": false,
        "Env": [
            "HOME=/",
            "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
        ],
        "Cmd": null,
        "Dns": null,
        "DnsSearch": null,
        "Image": "8abc22bad04266308ff408ca61cb8f6f4244a59308f7efc64e54b08b496c58db",
        "Volumes": null,
        "VolumesFrom": "",
        "WorkingDir": "",
        "Entrypoint": null,
        "NetworkDisabled": false,
        "OnBuild": null,
        "Context": null
    ,
"architecture": "x86_64",
"Size": 385520098
]

HISTORY

April 2014, Originally compiled by William Henry (whenry at redhat dot com) based on docker.com source material and internal work. June 2014, updated by Sven Dowideit ⟨SvenDowideit@home.org.au⟩
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