% DOCKER(1) Docker User Manuals % Docker Community % JUNE 2014
docker-inspect - Return low-level information on a container or image
docker inspect [--help] [-f|--format[=FORMAT]] CONTAINER|IMAGE [CONTAINER|IMAGE...]
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.
--help Print usage statement
-f, --format="" Format the output using the given go template.
To get information on a container use its ID or instance name:
$ docker inspect 1eb5fabf5a03
[{
"AppArmorProfile": "",
"Args": [],
"Config": {
"AttachStderr": false,
"AttachStdin": false,
"AttachStdout": false,
"Cmd": [
"/usr/sbin/nginx"
],
"Domainname": "",
"Entrypoint": null,
"Env": [
"HOME=/",
"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
],
"ExposedPorts": {
"80/tcp": {}
},
"Hostname": "1eb5fabf5a03",
"Image": "summit/nginx",
"Labels": {
"com.example.vendor": "Acme",
"com.example.license": "GPL",
"com.example.version": "1.0"
},
"MacAddress": "",
"NetworkDisabled": false,
"OnBuild": null,
"OpenStdin": false,
"PortSpecs": null,
"StdinOnce": false,
"Tty": true,
"User": "",
"Volumes": null,
"WorkingDir": "",
},
"Created": "2014-04-04T21:33:52.02361335Z",
"Driver": "devicemapper",
"ExecDriver": "native-0.1",
"ExecIDs": null,
"HostConfig": {
"Binds": null,
"CapAdd": null,
"CapDrop": null,
"CgroupParent": "",
"ContainerIDFile": "",
"CpuShares": 512,
"CpusetCpus": "0,1",
"CpusetMems": "",
"Devices": [],
"Dns": null,
"DnsSearch": null,
"ExtraHosts": null,
"IpcMode": "",
"Links": null,
"LogConfig": {
"Config": null,
"Type": "json-file"
},
"LxcConf": null,
"Memory": 16777216,
"MemorySwap": -1,
"NetworkMode": "",
"PidMode": "",
"PortBindings": {
"80/tcp": [
{
"HostIp": "0.0.0.0",
"HostPort": "80"
}
]
},
"Privileged": false,
"PublishAllPorts": false,
"ReadonlyRootfs": false,
"RestartPolicy": {
"MaximumRetryCount": 0,
"Name": ""
},
"SecurityOpt": null,
"Ulimits": null,
"VolumesFrom": null
}
"HostnamePath": "/var/lib/docker/containers/1eb5fabf5a03807136561b3c00adcd2992b535d624d5e18b6cdc6a6844d9767b/hostname",
"HostsPath": "/var/lib/docker/containers/1eb5fabf5a03807136561b3c00adcd2992b535d624d5e18b6cdc6a6844d9767b/hosts",
"ID": "1eb5fabf5a03807136561b3c00adcd2992b535d624d5e18b6cdc6a6844d9767b",
"Image": "df53773a4390e25936f9fd3739e0c0e60a62d024ea7b669282b27e65ae8458e6",
"LogPath": "/var/lib/docker/containers/1eb5fabf5a03807136561b3c00adcd2992b535d624d5e18b6cdc6a6844d9767b/1eb5fabf5a03807136561b3c00adcd2992b535d624d5e18b6cdc6a6844d9767b-json.log",
"MountLabel": "",
"Name": "/ecstatic_ptolemy",
"NetworkSettings": {
"Bridge": "docker0",
"Gateway": "172.17.42.1",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"IPAddress": "172.17.0.2",
"IPPrefixLen": 16,
"IPv6Gateway": "",
"LinkLocalIPv6Address": "",
"LinkLocalIPv6PrefixLen": 0,
"MacAddress": "",
"PortMapping": null,
"Ports": {
"80/tcp": [
{
"HostIp": "0.0.0.0",
"HostPort": "80"
}
]
}
},
"Path": "/usr/sbin/nginx",
"ProcessLabel": "",
"ResolvConfPath": "/etc/resolv.conf",
"RestartCount": 0,
"State": {
"Dead": false,
"Error": "",
"ExitCode": 0,
"FinishedAt": "0001-01-01T00:00:00Z",
"OOMKilled": false,
"Paused": false,
"Pid": 858,
"Restarting": false,
"Running": true,
"StartedAt": "2014-04-04T21:33:54.16259207Z",
},
"Volumes": {},
"VolumesRW": {},
}
To get the IP address of a container use:
$ docker inspect --format='{{.NetworkSettings.IPAddress}}' 1eb5fabf5a03
172.17.0.2
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
You can get more information about how to write a go template from: http://golang.org/pkg/text/template/.
Use an image's ID or name (e.g., repository/name[:tag]) to get information on it.
$ docker inspect fc1203419df2
[{
"Architecture": "amd64",
"Author": "",
"Comment": "",
"Config": {
"AttachStderr": false,
"AttachStdin": false,
"AttachStdout": false,
"Cmd": [
"make",
"direct-test"
],
"Domainname": "",
"Entrypoint": [
"/dind"
],
"Env": [
"PATH=/go/bin:/usr/src/go/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
],
"ExposedPorts": null,
"Hostname": "242978536a06",
"Image": "c2b774c744afc5bea603b5e6c5218539e506649326de3ea0135182f299d0519a",
"Labels": {},
"MacAddress": "",
"NetworkDisabled": false,
"OnBuild": [],
"OpenStdin": false,
"PortSpecs": null,
"StdinOnce": false,
"Tty": false,
"User": "",
"Volumes": null,
"WorkingDir": "/go/src/github.com/docker/libcontainer"
},
"Container": "1c00417f3812a96d3ebc29e7fdee69f3d586d703ab89c8233fd4678d50707b39",
"ContainerConfig": {
"AttachStderr": false,
"AttachStdin": false,
"AttachStdout": false,
"Cmd": [
"/bin/sh",
"-c",
"#(nop) CMD [\"make\" \"direct-test\"]"
],
"Domainname": "",
"Entrypoint": [
"/dind"
],
"Env": [
"PATH=/go/bin:/usr/src/go/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
],
"ExposedPorts": null,
"Hostname": "242978536a06",
"Image": "c2b774c744afc5bea603b5e6c5218539e506649326de3ea0135182f299d0519a",
"Labels": {},
"MacAddress": "",
"NetworkDisabled": false,
"OnBuild": [],
"OpenStdin": false,
"PortSpecs": null,
"StdinOnce": false,
"Tty": false,
"User": "",
"Volumes": null,
"WorkingDir": "/go/src/github.com/docker/libcontainer"
},
"Created": "2015-04-07T05:34:39.079489206Z",
"DockerVersion": "1.5.0-dev",
"Id": "fc1203419df26ca82cad1dd04c709cb1b8a8a947bd5bcbdfbef8241a76f031db",
"Os": "linux",
"Parent": "c2b774c744afc5bea603b5e6c5218539e506649326de3ea0135182f299d0519a",
"Size": 0,
"VirtualSize": 613136466
}]
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 April 2015, updated by Qiang Huang h.huangqiang@huawei.com