% DOCKER(1) Docker User Manuals % Docker Community % JUNE 2014 # NAME docker-inspect - Return low-level information on a container or image # SYNOPSIS **docker inspect** [**--help**] [**-f**|**--format**[=*FORMAT*]] [**-s**|**--size**] [**--type**=*container*|*image*] 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 the container and image have the same name, this will return container JSON for unspecified type. 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. **-s**, **--size** Display total file sizes if the type is container. **--type**="*container*|*image*" Return JSON for specified type, permissible values are "image" or "container" # EXAMPLES Get information about an image when image name conflicts with the container name, e.g. both image and container are named rhel7: $ docker inspect --type=image rhel7 [ { "Id": "fe01a428b9d9de35d29531e9994157978e8c48fa693e1bf1d221dffbbb67b170", "Parent": "10acc31def5d6f249b548e01e8ffbaccfd61af0240c17315a7ad393d022c5ca2", .... } ] ## Getting information on a container To get information on a container use its ID or instance name: $ docker inspect d2cc496561d6 [{ "Id": "d2cc496561d6d520cbc0236b4ba88c362c446a7619992123f11c809cded25b47", "Created": "2015-06-08T16:18:02.505155285Z", "Path": "bash", "Args": [], "State": { "Running": false, "Paused": false, "Restarting": false, "OOMKilled": false, "Dead": false, "Pid": 0, "ExitCode": 0, "Error": "", "StartedAt": "2015-06-08T16:18:03.643865954Z", "FinishedAt": "2015-06-08T16:57:06.448552862Z" }, "Image": "ded7cd95e059788f2586a51c275a4f151653779d6a7f4dad77c2bd34601d94e4", "NetworkSettings": { "Bridge": "", "SandboxID": "6b4851d1903e16dd6a567bd526553a86664361f31036eaaa2f8454d6f4611f6f", "HairpinMode": false, "LinkLocalIPv6Address": "", "LinkLocalIPv6PrefixLen": 0, "Ports": {}, "SandboxKey": "/var/run/docker/netns/6b4851d1903e", "SecondaryIPAddresses": null, "SecondaryIPv6Addresses": null, "EndpointID": "7587b82f0dada3656fda26588aee72630c6fab1536d36e394b2bfbcf898c971d", "Gateway": "172.17.0.1", "GlobalIPv6Address": "", "GlobalIPv6PrefixLen": 0, "IPAddress": "172.17.0.2", "IPPrefixLen": 16, "IPv6Gateway": "", "MacAddress": "02:42:ac:12:00:02", "Networks": { "bridge": { "NetworkID": "7ea29fc1412292a2d7bba362f9253545fecdfa8ce9a6e37dd10ba8bee7129812", "EndpointID": "7587b82f0dada3656fda26588aee72630c6fab1536d36e394b2bfbcf898c971d", "Gateway": "172.17.0.1", "IPAddress": "172.17.0.2", "IPPrefixLen": 16, "IPv6Gateway": "", "GlobalIPv6Address": "", "GlobalIPv6PrefixLen": 0, "MacAddress": "02:42:ac:12:00:02" } } }, "ResolvConfPath": "/var/lib/docker/containers/d2cc496561d6d520cbc0236b4ba88c362c446a7619992123f11c809cded25b47/resolv.conf", "HostnamePath": "/var/lib/docker/containers/d2cc496561d6d520cbc0236b4ba88c362c446a7619992123f11c809cded25b47/hostname", "HostsPath": "/var/lib/docker/containers/d2cc496561d6d520cbc0236b4ba88c362c446a7619992123f11c809cded25b47/hosts", "LogPath": "/var/lib/docker/containers/d2cc496561d6d520cbc0236b4ba88c362c446a7619992123f11c809cded25b47/d2cc496561d6d520cbc0236b4ba88c362c446a7619992123f11c809cded25b47-json.log", "Name": "/adoring_wozniak", "RestartCount": 0, "Driver": "devicemapper", "MountLabel": "", "ProcessLabel": "", "Mounts": [ { "Source": "/data", "Destination": "/data", "Mode": "ro,Z", "RW": false "Propagation": "" } ], "AppArmorProfile": "", "ExecIDs": null, "HostConfig": { "Binds": null, "ContainerIDFile": "", "Memory": 0, "MemorySwap": 0, "CpuShares": 0, "CpuPeriod": 0, "CpusetCpus": "", "CpusetMems": "", "CpuQuota": 0, "BlkioWeight": 0, "OomKillDisable": false, "Privileged": false, "PortBindings": {}, "Links": null, "PublishAllPorts": false, "Dns": null, "DnsSearch": null, "DnsOptions": null, "ExtraHosts": null, "VolumesFrom": null, "Devices": [], "NetworkMode": "bridge", "IpcMode": "", "PidMode": "", "UTSMode": "", "CapAdd": null, "CapDrop": null, "RestartPolicy": { "Name": "no", "MaximumRetryCount": 0 }, "SecurityOpt": null, "ReadonlyRootfs": false, "Ulimits": null, "LogConfig": { "Type": "json-file", "Config": {} }, "CgroupParent": "" }, "GraphDriver": { "Name": "devicemapper", "Data": { "DeviceId": "5", "DeviceName": "docker-253:1-2763198-d2cc496561d6d520cbc0236b4ba88c362c446a7619992123f11c809cded25b47", "DeviceSize": "171798691840" } }, "Config": { "Hostname": "d2cc496561d6", "Domainname": "", "User": "", "AttachStdin": true, "AttachStdout": true, "AttachStderr": true, "ExposedPorts": null, "Tty": true, "OpenStdin": true, "StdinOnce": true, "Env": null, "Cmd": [ "bash" ], "Image": "fedora", "Volumes": null, "VolumeDriver": "", "WorkingDir": "", "Entrypoint": null, "NetworkDisabled": false, "MacAddress": "", "OnBuild": null, "Labels": {}, "Memory": 0, "MemorySwap": 0, "CpuShares": 0, "Cpuset": "", "StopSignal": "SIGTERM" } } ] ## Getting the IP address of a container instance To get the IP address of a container use: $ docker inspect --format='{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' d2cc496561d6 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}}' d2cc496561d6 80/tcp -> 80 You can get more information about how to write a Go template from: https://golang.org/pkg/text/template/. ## Getting size information on a container $ docker inspect -s d2cc496561d6 [ { .... "SizeRw": 0, "SizeRootFs": 972, .... } ] ## Getting information on an image Use an image's ID or name (e.g., repository/name[:tag]) to get information about the image: $ docker inspect ded7cd95e059 [{ "Id": "ded7cd95e059788f2586a51c275a4f151653779d6a7f4dad77c2bd34601d94e4", "Parent": "48ecf305d2cf7046c1f5f8fcbcd4994403173441d4a7f125b1bb0ceead9de731", "Comment": "", "Created": "2015-05-27T16:58:22.937503085Z", "Container": "76cf7f67d83a7a047454b33007d03e32a8f474ad332c3a03c94537edd22b312b", "ContainerConfig": { "Hostname": "76cf7f67d83a", "Domainname": "", "User": "", "AttachStdin": false, "AttachStdout": false, "AttachStderr": false, "ExposedPorts": null, "Tty": false, "OpenStdin": false, "StdinOnce": false, "Env": null, "Cmd": [ "/bin/sh", "-c", "#(nop) ADD file:4be46382bcf2b095fcb9fe8334206b584eff60bb3fad8178cbd97697fcb2ea83 in /" ], "Image": "48ecf305d2cf7046c1f5f8fcbcd4994403173441d4a7f125b1bb0ceead9de731", "Volumes": null, "VolumeDriver": "", "WorkingDir": "", "Entrypoint": null, "NetworkDisabled": false, "MacAddress": "", "OnBuild": null, "Labels": {} }, "DockerVersion": "1.6.0", "Author": "Lokesh Mandvekar \u003clsm5@fedoraproject.org\u003e", "Config": { "Hostname": "76cf7f67d83a", "Domainname": "", "User": "", "AttachStdin": false, "AttachStdout": false, "AttachStderr": false, "ExposedPorts": null, "Tty": false, "OpenStdin": false, "StdinOnce": false, "Env": null, "Cmd": null, "Image": "48ecf305d2cf7046c1f5f8fcbcd4994403173441d4a7f125b1bb0ceead9de731", "Volumes": null, "VolumeDriver": "", "WorkingDir": "", "Entrypoint": null, "NetworkDisabled": false, "MacAddress": "", "OnBuild": null, "Labels": {} }, "Architecture": "amd64", "Os": "linux", "Size": 186507296, "VirtualSize": 186507296, "GraphDriver": { "Name": "devicemapper", "Data": { "DeviceId": "3", "DeviceName": "docker-253:1-2763198-ded7cd95e059788f2586a51c275a4f151653779d6a7f4dad77c2bd34601d94e4", "DeviceSize": "171798691840" } } } ] # 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 April 2015, updated by Qiang Huang October 2015, updated by Sally O'Malley