| <!--[metadata]> |
| +++ |
| title = "Remote API v1.17" |
| description = "API Documentation for Docker" |
| keywords = ["API, Docker, rcli, REST, documentation"] |
| [menu.main] |
| parent = "engine_remoteapi" |
| weight = 4 |
| +++ |
| <![end-metadata]--> |
| |
| # Docker Remote API v1.17 |
| |
| ## 1. Brief introduction |
| |
| - The Remote API has replaced `rcli`. |
| - The daemon listens on `unix:///var/run/docker.sock` but you can |
| [Bind Docker to another host/port or a Unix socket](../../quickstart.md#bind-docker-to-another-host-port-or-a-unix-socket). |
| - The API tends to be REST, but for some complex commands, like `attach` |
| or `pull`, the HTTP connection is hijacked to transport `STDOUT`, |
| `STDIN` and `STDERR`. |
| |
| # 2. Endpoints |
| |
| ## 2.1 Containers |
| |
| ### List containers |
| |
| `GET /containers/json` |
| |
| List containers |
| |
| **Example request**: |
| |
| GET /containers/json?all=1&before=8dfafdbc3a40&size=1 HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| Content-Type: application/json |
| |
| [ |
| { |
| "Id": "8dfafdbc3a40", |
| "Names":["/boring_feynman"], |
| "Image": "ubuntu:latest", |
| "Command": "echo 1", |
| "Created": 1367854155, |
| "Status": "Exit 0", |
| "Ports": [{"PrivatePort": 2222, "PublicPort": 3333, "Type": "tcp"}], |
| "SizeRw": 12288, |
| "SizeRootFs": 0 |
| }, |
| { |
| "Id": "9cd87474be90", |
| "Names":["/coolName"], |
| "Image": "ubuntu:latest", |
| "Command": "echo 222222", |
| "Created": 1367854155, |
| "Status": "Exit 0", |
| "Ports": [], |
| "SizeRw": 12288, |
| "SizeRootFs": 0 |
| }, |
| { |
| "Id": "3176a2479c92", |
| "Names":["/sleepy_dog"], |
| "Image": "ubuntu:latest", |
| "Command": "echo 3333333333333333", |
| "Created": 1367854154, |
| "Status": "Exit 0", |
| "Ports":[], |
| "SizeRw":12288, |
| "SizeRootFs":0 |
| }, |
| { |
| "Id": "4cb07b47f9fb", |
| "Names":["/running_cat"], |
| "Image": "ubuntu:latest", |
| "Command": "echo 444444444444444444444444444444444", |
| "Created": 1367854152, |
| "Status": "Exit 0", |
| "Ports": [], |
| "SizeRw": 12288, |
| "SizeRootFs": 0 |
| } |
| ] |
| |
| Query Parameters: |
| |
| - **all** – 1/True/true or 0/False/false, Show all containers. |
| Only running containers are shown by default (i.e., this defaults to false) |
| - **limit** – Show `limit` last created |
| containers, include non-running ones. |
| - **since** – Show only containers created since Id, include |
| non-running ones. |
| - **before** – Show only containers created before Id, include |
| non-running ones. |
| - **size** – 1/True/true or 0/False/false, Show the containers |
| sizes |
| - **filters** - a json encoded value of the filters (a map[string][]string) to process on the containers list. Available filters: |
| - exited=<int> -- containers with exit code of <int> |
| - status=(restarting|running|paused|exited) |
| |
| Status Codes: |
| |
| - **200** – no error |
| - **400** – bad parameter |
| - **500** – server error |
| |
| ### Create a container |
| |
| `POST /containers/create` |
| |
| Create a container |
| |
| **Example request**: |
| |
| POST /containers/create HTTP/1.1 |
| Content-Type: application/json |
| |
| { |
| "Hostname": "", |
| "Domainname": "", |
| "User": "", |
| "Memory": 0, |
| "MemorySwap": 0, |
| "CpuShares": 512, |
| "Cpuset": "0,1", |
| "AttachStdin": false, |
| "AttachStdout": true, |
| "AttachStderr": true, |
| "Tty": false, |
| "OpenStdin": false, |
| "StdinOnce": false, |
| "Env": [ |
| "FOO=bar", |
| "BAZ=quux" |
| ], |
| "Cmd": [ |
| "date" |
| ], |
| "Entrypoint": "", |
| "Image": "ubuntu", |
| "Volumes": { |
| "/tmp": {} |
| }, |
| "WorkingDir": "", |
| "NetworkDisabled": false, |
| "MacAddress": "12:34:56:78:9a:bc", |
| "ExposedPorts": { |
| "22/tcp": {} |
| }, |
| "HostConfig": { |
| "Binds": ["/tmp:/tmp"], |
| "Links": ["redis3:redis"], |
| "LxcConf": {"lxc.utsname":"docker"}, |
| "PortBindings": { "22/tcp": [{ "HostPort": "11022" }] }, |
| "PublishAllPorts": false, |
| "Privileged": false, |
| "ReadonlyRootfs": false, |
| "Dns": ["8.8.8.8"], |
| "DnsSearch": [""], |
| "ExtraHosts": null, |
| "VolumesFrom": ["parent", "other:ro"], |
| "CapAdd": ["NET_ADMIN"], |
| "CapDrop": ["MKNOD"], |
| "RestartPolicy": { "Name": "", "MaximumRetryCount": 0 }, |
| "NetworkMode": "bridge", |
| "Devices": [], |
| "SecurityOpt": [] |
| } |
| } |
| |
| **Example response**: |
| |
| HTTP/1.1 201 Created |
| Content-Type: application/json |
| |
| { |
| "Id":"e90e34656806", |
| "Warnings":[] |
| } |
| |
| Json Parameters: |
| |
| - **Hostname** - A string value containing the desired hostname to use for the |
| container. |
| - **Domainname** - A string value containing the desired domain name to use |
| for the container. |
| - **User** - A string value containing the user to use inside the container. |
| - **Memory** - Memory limit in bytes. |
| - **MemorySwap** - Total memory limit (memory + swap); set `-1` to enable unlimited swap. |
| You must use this with `memory` and make the swap value larger than `memory`. |
| - **CpuShares** - An integer value containing the CPU Shares for container |
| (ie. the relative weight vs other containers). |
| **CpuSet** - String value containing the cgroups Cpuset to use. |
| - **AttachStdin** - Boolean value, attaches to stdin. |
| - **AttachStdout** - Boolean value, attaches to stdout. |
| - **AttachStderr** - Boolean value, attaches to stderr. |
| - **Tty** - Boolean value, Attach standard streams to a tty, including stdin if it is not closed. |
| - **OpenStdin** - Boolean value, opens stdin, |
| - **StdinOnce** - Boolean value, close stdin after the 1 attached client disconnects. |
| - **Env** - A list of environment variables in the form of `["VAR=value"[,"VAR2=value2"]]` |
| - **Cmd** - Command to run specified as a string or an array of strings. |
| - **Entrypoint** - Set the entrypoint for the container a string or an array |
| of strings |
| - **Image** - String value containing the image name to use for the container |
| - **Volumes** – An object mapping mountpoint paths (strings) inside the |
| container to empty objects. |
| - **WorkingDir** - A string value containing the working dir for commands to |
| run in. |
| - **NetworkDisabled** - Boolean value, when true disables networking for the |
| container |
| - **ExposedPorts** - An object mapping ports to an empty object in the form of: |
| `"ExposedPorts": { "<port>/<tcp|udp>: {}" }` |
| - **HostConfig** |
| - **Binds** – A list of volume bindings for this container. Each volume |
| binding is a string of the form `container_path` (to create a new |
| volume for the container), `host_path:container_path` (to bind-mount |
| a host path into the container), or `host_path:container_path:ro` |
| (to make the bind-mount read-only inside the container). |
| - **Links** - A list of links for the container. Each link entry should be |
| in the form of "container_name:alias". |
| - **LxcConf** - LXC specific configurations. These configurations will only |
| work when using the `lxc` execution driver. |
| - **PortBindings** - A map of exposed container ports and the host port they |
| should map to. It should be specified in the form |
| `{ <port>/<protocol>: [{ "HostPort": "<port>" }] }` |
| Take note that `port` is specified as a string and not an integer value. |
| - **PublishAllPorts** - Allocates a random host port for all of a container's |
| exposed ports. Specified as a boolean value. |
| - **Privileged** - Gives the container full access to the host. Specified as |
| a boolean value. |
| - **ReadonlyRootfs** - Mount the container's root filesystem as read only. |
| Specified as a boolean value. |
| - **Dns** - A list of dns servers for the container to use. |
| - **DnsSearch** - A list of DNS search domains |
| - **ExtraHosts** - A list of hostnames/IP mappings to be added to the |
| container's `/etc/hosts` file. Specified in the form `["hostname:IP"]`. |
| - **VolumesFrom** - A list of volumes to inherit from another container. |
| Specified in the form `<container name>[:<ro|rw>]` |
| - **CapAdd** - A list of kernel capabilities to add to the container. |
| - **Capdrop** - A list of kernel capabilities to drop from the container. |
| - **RestartPolicy** – The behavior to apply when the container exits. The |
| value is an object with a `Name` property of either `"always"` to |
| always restart or `"on-failure"` to restart only when the container |
| exit code is non-zero. If `on-failure` is used, `MaximumRetryCount` |
| controls the number of times to retry before giving up. |
| The default is not to restart. (optional) |
| An ever increasing delay (double the previous delay, starting at 100mS) |
| is added before each restart to prevent flooding the server. |
| - **NetworkMode** - Sets the networking mode for the container. Supported |
| values are: `bridge`, `host`, `none`, and `container:<name|id>` |
| - **Devices** - A list of devices to add to the container specified in the |
| form |
| `{ "PathOnHost": "/dev/deviceName", "PathInContainer": "/dev/deviceName", "CgroupPermissions": "mrw"}` |
| - **SecurityOpt**: A list of string values to customize labels for MLS |
| systems, such as SELinux. |
| |
| Query Parameters: |
| |
| - **name** – Assign the specified name to the container. Must |
| match `/?[a-zA-Z0-9_-]+`. |
| |
| Status Codes: |
| |
| - **201** – no error |
| - **404** – no such container |
| - **406** – impossible to attach (container not running) |
| - **500** – server error |
| |
| ### Inspect a container |
| |
| `GET /containers/(id or name)/json` |
| |
| Return low-level information on the container `id` |
| |
| |
| **Example request**: |
| |
| GET /containers/4fa6e0f0c678/json HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| Content-Type: application/json |
| |
| { |
| "AppArmorProfile": "", |
| "Args": [ |
| "-c", |
| "exit 9" |
| ], |
| "Config": { |
| "AttachStderr": true, |
| "AttachStdin": false, |
| "AttachStdout": true, |
| "Cmd": [ |
| "/bin/sh", |
| "-c", |
| "exit 9" |
| ], |
| "CpuShares": 0, |
| "Cpuset": "", |
| "Domainname": "", |
| "Entrypoint": null, |
| "Env": [ |
| "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" |
| ], |
| "ExposedPorts": null, |
| "Hostname": "ba033ac44011", |
| "Image": "ubuntu", |
| "MacAddress": "", |
| "Memory": 0, |
| "MemorySwap": 0, |
| "NetworkDisabled": false, |
| "OnBuild": null, |
| "OpenStdin": false, |
| "PortSpecs": null, |
| "StdinOnce": false, |
| "Tty": false, |
| "User": "", |
| "Volumes": null, |
| "WorkingDir": "" |
| }, |
| "Created": "2015-01-06T15:47:31.485331387Z", |
| "Driver": "devicemapper", |
| "ExecDriver": "native-0.2", |
| "ExecIDs": null, |
| "HostConfig": { |
| "Binds": null, |
| "CapAdd": null, |
| "CapDrop": null, |
| "ContainerIDFile": "", |
| "Devices": [], |
| "Dns": null, |
| "DnsSearch": null, |
| "ExtraHosts": null, |
| "IpcMode": "", |
| "Links": null, |
| "LxcConf": [], |
| "NetworkMode": "bridge", |
| "PortBindings": {}, |
| "Privileged": false, |
| "ReadonlyRootfs": false, |
| "PublishAllPorts": false, |
| "RestartPolicy": { |
| "MaximumRetryCount": 2, |
| "Name": "on-failure" |
| }, |
| "SecurityOpt": null, |
| "VolumesFrom": null |
| }, |
| "HostnamePath": "/var/lib/docker/containers/ba033ac4401106a3b513bc9d639eee123ad78ca3616b921167cd74b20e25ed39/hostname", |
| "HostsPath": "/var/lib/docker/containers/ba033ac4401106a3b513bc9d639eee123ad78ca3616b921167cd74b20e25ed39/hosts", |
| "Id": "ba033ac4401106a3b513bc9d639eee123ad78ca3616b921167cd74b20e25ed39", |
| "Image": "04c5d3b7b0656168630d3ba35d8889bd0e9caafcaeb3004d2bfbc47e7c5d35d2", |
| "MountLabel": "", |
| "Name": "/boring_euclid", |
| "NetworkSettings": { |
| "Bridge": "", |
| "Gateway": "", |
| "IPAddress": "", |
| "IPPrefixLen": 0, |
| "MacAddress": "", |
| "PortMapping": null, |
| "Ports": null |
| }, |
| "Path": "/bin/sh", |
| "ProcessLabel": "", |
| "ResolvConfPath": "/var/lib/docker/containers/ba033ac4401106a3b513bc9d639eee123ad78ca3616b921167cd74b20e25ed39/resolv.conf", |
| "RestartCount": 1, |
| "State": { |
| "Error": "", |
| "ExitCode": 9, |
| "FinishedAt": "2015-01-06T15:47:32.080254511Z", |
| "OOMKilled": false, |
| "Paused": false, |
| "Pid": 0, |
| "Restarting": false, |
| "Running": false, |
| "StartedAt": "2015-01-06T15:47:32.072697474Z" |
| }, |
| "Volumes": {}, |
| "VolumesRW": {} |
| } |
| |
| Status Codes: |
| |
| - **200** – no error |
| - **404** – no such container |
| - **500** – server error |
| |
| ### List processes running inside a container |
| |
| `GET /containers/(id or name)/top` |
| |
| List processes running inside the container `id`. On Unix systems this |
| is done by running the `ps` command. This endpoint is not |
| supported on Windows. |
| |
| **Example request**: |
| |
| GET /containers/4fa6e0f0c678/top HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| Content-Type: application/json |
| |
| { |
| "Titles" : [ |
| "UID", "PID", "PPID", "C", "STIME", "TTY", "TIME", "CMD" |
| ], |
| "Processes" : [ |
| [ |
| "root", "13642", "882", "0", "17:03", "pts/0", "00:00:00", "/bin/bash" |
| ], |
| [ |
| "root", "13735", "13642", "0", "17:06", "pts/0", "00:00:00", "sleep 10" |
| ] |
| ] |
| } |
| |
| **Example request**: |
| |
| GET /containers/4fa6e0f0c678/top?ps_args=aux HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| Content-Type: application/json |
| |
| { |
| "Titles" : [ |
| "USER","PID","%CPU","%MEM","VSZ","RSS","TTY","STAT","START","TIME","COMMAND" |
| ] |
| "Processes" : [ |
| [ |
| "root","13642","0.0","0.1","18172","3184","pts/0","Ss","17:03","0:00","/bin/bash" |
| ], |
| [ |
| "root","13895","0.0","0.0","4348","692","pts/0","S+","17:15","0:00","sleep 10" |
| ] |
| ], |
| } |
| |
| Query Parameters: |
| |
| - **ps_args** – `ps` arguments to use (e.g., `aux`), defaults to `-ef` |
| |
| Status Codes: |
| |
| - **200** – no error |
| - **404** – no such container |
| - **500** – server error |
| |
| ### Get container logs |
| |
| `GET /containers/(id or name)/logs` |
| |
| Get stdout and stderr logs from the container ``id`` |
| |
| **Example request**: |
| |
| GET /containers/4fa6e0f0c678/logs?stderr=1&stdout=1×tamps=1&follow=1&tail=10 HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 101 UPGRADED |
| Content-Type: application/vnd.docker.raw-stream |
| Connection: Upgrade |
| Upgrade: tcp |
| |
| {{ STREAM }} |
| |
| Query Parameters: |
| |
| - **follow** – 1/True/true or 0/False/false, return stream. Default false |
| - **stdout** – 1/True/true or 0/False/false, show stdout log. Default false |
| - **stderr** – 1/True/true or 0/False/false, show stderr log. Default false |
| - **timestamps** – 1/True/true or 0/False/false, print timestamps for |
| every log line. Default false |
| - **tail** – Output specified number of lines at the end of logs: `all` or `<number>`. Default all |
| |
| Status Codes: |
| |
| - **101** – no error, hints proxy about hijacking |
| - **200** – no error, no upgrade header found |
| - **404** – no such container |
| - **500** – server error |
| |
| ### Inspect changes on a container's filesystem |
| |
| `GET /containers/(id or name)/changes` |
| |
| Inspect changes on container `id`'s filesystem |
| |
| **Example request**: |
| |
| GET /containers/4fa6e0f0c678/changes HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| Content-Type: application/json |
| |
| [ |
| { |
| "Path": "/dev", |
| "Kind": 0 |
| }, |
| { |
| "Path": "/dev/kmsg", |
| "Kind": 1 |
| }, |
| { |
| "Path": "/test", |
| "Kind": 1 |
| } |
| ] |
| |
| Status Codes: |
| |
| - **200** – no error |
| - **404** – no such container |
| - **500** – server error |
| |
| ### Export a container |
| |
| `GET /containers/(id or name)/export` |
| |
| Export the contents of container `id` |
| |
| **Example request**: |
| |
| GET /containers/4fa6e0f0c678/export HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| Content-Type: application/octet-stream |
| |
| {{ TAR STREAM }} |
| |
| Status Codes: |
| |
| - **200** – no error |
| - **404** – no such container |
| - **500** – server error |
| |
| ### Get container stats based on resource usage |
| |
| `GET /containers/(id or name)/stats` |
| |
| This endpoint returns a live stream of a container's resource usage statistics. |
| |
| **Example request**: |
| |
| GET /containers/redis1/stats HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| Content-Type: application/json |
| |
| { |
| "read" : "2015-01-08T22:57:31.547920715Z", |
| "network" : { |
| "rx_dropped" : 0, |
| "rx_bytes" : 648, |
| "rx_errors" : 0, |
| "tx_packets" : 8, |
| "tx_dropped" : 0, |
| "rx_packets" : 8, |
| "tx_errors" : 0, |
| "tx_bytes" : 648 |
| }, |
| "memory_stats" : { |
| "stats" : { |
| "total_pgmajfault" : 0, |
| "cache" : 0, |
| "mapped_file" : 0, |
| "total_inactive_file" : 0, |
| "pgpgout" : 414, |
| "rss" : 6537216, |
| "total_mapped_file" : 0, |
| "writeback" : 0, |
| "unevictable" : 0, |
| "pgpgin" : 477, |
| "total_unevictable" : 0, |
| "pgmajfault" : 0, |
| "total_rss" : 6537216, |
| "total_rss_huge" : 6291456, |
| "total_writeback" : 0, |
| "total_inactive_anon" : 0, |
| "rss_huge" : 6291456, |
| "hierarchical_memory_limit" : 67108864, |
| "total_pgfault" : 964, |
| "total_active_file" : 0, |
| "active_anon" : 6537216, |
| "total_active_anon" : 6537216, |
| "total_pgpgout" : 414, |
| "total_cache" : 0, |
| "inactive_anon" : 0, |
| "active_file" : 0, |
| "pgfault" : 964, |
| "inactive_file" : 0, |
| "total_pgpgin" : 477 |
| }, |
| "max_usage" : 6651904, |
| "usage" : 6537216, |
| "failcnt" : 0, |
| "limit" : 67108864 |
| }, |
| "blkio_stats" : {}, |
| "cpu_stats" : { |
| "cpu_usage" : { |
| "percpu_usage" : [ |
| 16970827, |
| 1839451, |
| 7107380, |
| 10571290 |
| ], |
| "usage_in_usermode" : 10000000, |
| "total_usage" : 36488948, |
| "usage_in_kernelmode" : 20000000 |
| }, |
| "system_cpu_usage" : 20091722000000000, |
| "throttling_data" : {} |
| } |
| } |
| |
| Status Codes: |
| |
| - **200** – no error |
| - **404** – no such container |
| - **500** – server error |
| |
| ### Resize a container TTY |
| |
| `POST /containers/(id or name)/resize?h=<height>&w=<width>` |
| |
| Resize the TTY for container with `id`. The container must be restarted for the resize to take effect. |
| |
| **Example request**: |
| |
| POST /containers/4fa6e0f0c678/resize?h=40&w=80 HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| Content-Length: 0 |
| Content-Type: text/plain; charset=utf-8 |
| |
| Status Codes: |
| |
| - **200** – no error |
| - **404** – No such container |
| - **500** – Cannot resize container |
| |
| ### Start a container |
| |
| `POST /containers/(id or name)/start` |
| |
| Start the container `id` |
| |
| > **Note**: |
| > For backwards compatibility, this endpoint accepts a `HostConfig` as JSON-encoded request body. |
| > See [create a container](#create-a-container) for details. |
| |
| **Example request**: |
| |
| POST /containers/e90e34656806/start HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 204 No Content |
| |
| Status Codes: |
| |
| - **204** – no error |
| - **304** – container already started |
| - **404** – no such container |
| - **500** – server error |
| |
| ### Stop a container |
| |
| `POST /containers/(id or name)/stop` |
| |
| Stop the container `id` |
| |
| **Example request**: |
| |
| POST /containers/e90e34656806/stop?t=5 HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 204 No Content |
| |
| Query Parameters: |
| |
| - **t** – number of seconds to wait before killing the container |
| |
| Status Codes: |
| |
| - **204** – no error |
| - **304** – container already stopped |
| - **404** – no such container |
| - **500** – server error |
| |
| ### Restart a container |
| |
| `POST /containers/(id or name)/restart` |
| |
| Restart the container `id` |
| |
| **Example request**: |
| |
| POST /containers/e90e34656806/restart?t=5 HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 204 No Content |
| |
| Query Parameters: |
| |
| - **t** – number of seconds to wait before killing the container |
| |
| Status Codes: |
| |
| - **204** – no error |
| - **404** – no such container |
| - **500** – server error |
| |
| ### Kill a container |
| |
| `POST /containers/(id or name)/kill` |
| |
| Kill the container `id` |
| |
| **Example request**: |
| |
| POST /containers/e90e34656806/kill HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 204 No Content |
| |
| Query Parameters |
| |
| - **signal** - Signal to send to the container: integer or string like "SIGINT". |
| When not set, SIGKILL is assumed and the call will waits for the container to exit. |
| |
| Status Codes: |
| |
| - **204** – no error |
| - **404** – no such container |
| - **500** – server error |
| |
| ### Rename a container |
| |
| `POST /containers/(id or name)/rename` |
| |
| Rename the container `id` to a `new_name` |
| |
| **Example request**: |
| |
| POST /containers/e90e34656806/rename?name=new_name HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 204 No Content |
| |
| Query Parameters: |
| |
| - **name** – new name for the container |
| |
| Status Codes: |
| |
| - **204** – no error |
| - **404** – no such container |
| - **409** - conflict name already assigned |
| - **500** – server error |
| |
| ### Pause a container |
| |
| `POST /containers/(id or name)/pause` |
| |
| Pause the container `id` |
| |
| **Example request**: |
| |
| POST /containers/e90e34656806/pause HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 204 No Content |
| |
| Status Codes: |
| |
| - **204** – no error |
| - **404** – no such container |
| - **500** – server error |
| |
| ### Unpause a container |
| |
| `POST /containers/(id or name)/unpause` |
| |
| Unpause the container `id` |
| |
| **Example request**: |
| |
| POST /containers/e90e34656806/unpause HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 204 No Content |
| |
| Status Codes: |
| |
| - **204** – no error |
| - **404** – no such container |
| - **500** – server error |
| |
| ### Attach to a container |
| |
| `POST /containers/(id or name)/attach` |
| |
| Attach to the container `id` |
| |
| **Example request**: |
| |
| POST /containers/16253994b7c4/attach?logs=1&stream=0&stdout=1 HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 101 UPGRADED |
| Content-Type: application/vnd.docker.raw-stream |
| Connection: Upgrade |
| Upgrade: tcp |
| |
| {{ STREAM }} |
| |
| Query Parameters: |
| |
| - **logs** – 1/True/true or 0/False/false, return logs. Default false |
| - **stream** – 1/True/true or 0/False/false, return stream. |
| Default false |
| - **stdin** – 1/True/true or 0/False/false, if stream=true, attach |
| to stdin. Default false |
| - **stdout** – 1/True/true or 0/False/false, if logs=true, return |
| stdout log, if stream=true, attach to stdout. Default false |
| - **stderr** – 1/True/true or 0/False/false, if logs=true, return |
| stderr log, if stream=true, attach to stderr. Default false |
| |
| Status Codes: |
| |
| - **101** – no error, hints proxy about hijacking |
| - **200** – no error, no upgrade header found |
| - **400** – bad parameter |
| - **404** – no such container |
| - **500** – server error |
| |
| **Stream details**: |
| |
| When using the TTY setting is enabled in |
| [`POST /containers/create` |
| ](#create-a-container), |
| the stream is the raw data from the process PTY and client's stdin. |
| When the TTY is disabled, then the stream is multiplexed to separate |
| stdout and stderr. |
| |
| The format is a **Header** and a **Payload** (frame). |
| |
| **HEADER** |
| |
| The header will contain the information on which stream write the |
| stream (stdout or stderr). It also contain the size of the |
| associated frame encoded on the last 4 bytes (uint32). |
| |
| It is encoded on the first 8 bytes like this: |
| |
| header := [8]byte{STREAM_TYPE, 0, 0, 0, SIZE1, SIZE2, SIZE3, SIZE4} |
| |
| `STREAM_TYPE` can be: |
| |
| - 0: stdin (will be written on stdout) |
| - 1: stdout |
| - 2: stderr |
| |
| `SIZE1, SIZE2, SIZE3, SIZE4` are the 4 bytes of |
| the uint32 size encoded as big endian. |
| |
| **PAYLOAD** |
| |
| The payload is the raw stream. |
| |
| **IMPLEMENTATION** |
| |
| The simplest way to implement the Attach protocol is the following: |
| |
| 1. Read 8 bytes |
| 2. chose stdout or stderr depending on the first byte |
| 3. Extract the frame size from the last 4 bytes |
| 4. Read the extracted size and output it on the correct output |
| 5. Goto 1 |
| |
| ### Attach to a container (websocket) |
| |
| `GET /containers/(id or name)/attach/ws` |
| |
| Attach to the container `id` via websocket |
| |
| Implements websocket protocol handshake according to [RFC 6455](http://tools.ietf.org/html/rfc6455) |
| |
| **Example request** |
| |
| GET /containers/e90e34656806/attach/ws?logs=0&stream=1&stdin=1&stdout=1&stderr=1 HTTP/1.1 |
| |
| **Example response** |
| |
| {{ STREAM }} |
| |
| Query Parameters: |
| |
| - **logs** – 1/True/true or 0/False/false, return logs. Default false |
| - **stream** – 1/True/true or 0/False/false, return stream. |
| Default false |
| - **stdin** – 1/True/true or 0/False/false, if stream=true, attach |
| to stdin. Default false |
| - **stdout** – 1/True/true or 0/False/false, if logs=true, return |
| stdout log, if stream=true, attach to stdout. Default false |
| - **stderr** – 1/True/true or 0/False/false, if logs=true, return |
| stderr log, if stream=true, attach to stderr. Default false |
| |
| Status Codes: |
| |
| - **200** – no error |
| - **400** – bad parameter |
| - **404** – no such container |
| - **500** – server error |
| |
| ### Wait a container |
| |
| `POST /containers/(id or name)/wait` |
| |
| Block until container `id` stops, then returns the exit code |
| |
| **Example request**: |
| |
| POST /containers/16253994b7c4/wait HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| Content-Type: application/json |
| |
| {"StatusCode": 0} |
| |
| Status Codes: |
| |
| - **200** – no error |
| - **404** – no such container |
| - **500** – server error |
| |
| ### Remove a container |
| |
| `DELETE /containers/(id or name)` |
| |
| Remove the container `id` from the filesystem |
| |
| **Example request**: |
| |
| DELETE /containers/16253994b7c4?v=1 HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 204 No Content |
| |
| Query Parameters: |
| |
| - **v** – 1/True/true or 0/False/false, Remove the volumes |
| associated to the container. Default false |
| - **force** - 1/True/true or 0/False/false, Kill then remove the container. |
| Default false |
| |
| Status Codes: |
| |
| - **204** – no error |
| - **400** – bad parameter |
| - **404** – no such container |
| - **500** – server error |
| |
| ### Copy files or folders from a container |
| |
| `POST /containers/(id or name)/copy` |
| |
| Copy files or folders of container `id` |
| |
| **Example request**: |
| |
| POST /containers/4fa6e0f0c678/copy HTTP/1.1 |
| Content-Type: application/json |
| |
| { |
| "Resource": "test.txt" |
| } |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| Content-Type: application/x-tar |
| |
| {{ TAR STREAM }} |
| |
| Status Codes: |
| |
| - **200** – no error |
| - **404** – no such container |
| - **500** – server error |
| |
| ## 2.2 Images |
| |
| ### List Images |
| |
| `GET /images/json` |
| |
| **Example request**: |
| |
| GET /images/json?all=0 HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| Content-Type: application/json |
| |
| [ |
| { |
| "RepoTags": [ |
| "ubuntu:12.04", |
| "ubuntu:precise", |
| "ubuntu:latest" |
| ], |
| "Id": "8dbd9e392a964056420e5d58ca5cc376ef18e2de93b5cc90e868a1bbc8318c1c", |
| "Created": 1365714795, |
| "Size": 131506275, |
| "VirtualSize": 131506275 |
| }, |
| { |
| "RepoTags": [ |
| "ubuntu:12.10", |
| "ubuntu:quantal" |
| ], |
| "ParentId": "27cf784147099545", |
| "Id": "b750fe79269d2ec9a3c593ef05b4332b1d1a02a62b4accb2c21d589ff2f5f2dc", |
| "Created": 1364102658, |
| "Size": 24653, |
| "VirtualSize": 180116135 |
| } |
| ] |
| |
| |
| Query Parameters: |
| |
| - **all** – 1/True/true or 0/False/false, default false |
| - **filters** – a json encoded value of the filters (a map[string][]string) to process on the images list. Available filters: |
| - dangling=true |
| - **filter** - only return images with the specified name |
| |
| ### Build image from a Dockerfile |
| |
| `POST /build` |
| |
| Build an image from a Dockerfile |
| |
| **Example request**: |
| |
| POST /build HTTP/1.1 |
| |
| {{ TAR STREAM }} |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| Content-Type: application/json |
| |
| {"stream": "Step 1..."} |
| {"stream": "..."} |
| {"error": "Error...", "errorDetail": {"code": 123, "message": "Error..."}} |
| |
| The input stream must be a tar archive compressed with one of the |
| following algorithms: identity (no compression), gzip, bzip2, xz. |
| |
| The archive must include a build instructions file, typically called |
| `Dockerfile` at the root of the archive. The `dockerfile` parameter may be |
| used to specify a different build instructions file by having its value be |
| the path to the alternate build instructions file to use. |
| |
| The archive may include any number of other files, |
| which will be accessible in the build context (See the [*ADD build |
| command*](../../reference/builder.md#dockerbuilder)). |
| |
| Query Parameters: |
| |
| - **dockerfile** - path within the build context to the Dockerfile |
| - **t** – repository name (and optionally a tag) to be applied to |
| the resulting image in case of success |
| - **remote** – git or HTTP/HTTPS URI build source |
| - **q** – suppress verbose build output |
| - **nocache** – do not use the cache when building the image |
| - **pull** - attempt to pull the image even if an older image exists locally |
| - **rm** - remove intermediate containers after a successful build (default behavior) |
| - **forcerm** - always remove intermediate containers (includes rm) |
| |
| Request Headers: |
| |
| - **Content-type** – should be set to `"application/tar"`. |
| - **X-Registry-Config** – base64-encoded ConfigFile object |
| |
| Status Codes: |
| |
| - **200** – no error |
| - **500** – server error |
| |
| ### Create an image |
| |
| `POST /images/create` |
| |
| Create an image, either by pulling it from the registry or by importing it |
| |
| **Example request**: |
| |
| POST /images/create?fromImage=ubuntu HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| Content-Type: application/json |
| |
| {"status": "Pulling..."} |
| {"status": "Pulling", "progress": "1 B/ 100 B", "progressDetail": {"current": 1, "total": 100}} |
| {"error": "Invalid..."} |
| ... |
| |
| When using this endpoint to pull an image from the registry, the |
| `X-Registry-Auth` header can be used to include |
| a base64-encoded AuthConfig object. |
| |
| Query Parameters: |
| |
| - **fromImage** – name of the image to pull |
| - **fromSrc** – source to import. The value may be a URL from which the image |
| can be retrieved or `-` to read the image from the request body. |
| - **repo** – repository |
| - **tag** – tag |
| |
| Request Headers: |
| |
| - **X-Registry-Auth** – base64-encoded AuthConfig object |
| |
| Status Codes: |
| |
| - **200** – no error |
| - **500** – server error |
| |
| |
| |
| ### Inspect an image |
| |
| `GET /images/(name)/json` |
| |
| Return low-level information on the image `name` |
| |
| **Example request**: |
| |
| GET /images/ubuntu/json HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| Content-Type: application/json |
| |
| { |
| "Created": "2013-03-23T22:24:18.818426-07:00", |
| "Container": "3d67245a8d72ecf13f33dffac9f79dcdf70f75acb84d308770391510e0c23ad0", |
| "ContainerConfig": |
| { |
| "Hostname": "", |
| "User": "", |
| "Memory": 0, |
| "MemorySwap": 0, |
| "AttachStdin": false, |
| "AttachStdout": false, |
| "AttachStderr": false, |
| "PortSpecs": null, |
| "Tty": true, |
| "OpenStdin": true, |
| "StdinOnce": false, |
| "Env": null, |
| "Cmd": ["/bin/bash"], |
| "Dns": null, |
| "Image": "ubuntu", |
| "Volumes": null, |
| "VolumesFrom": "", |
| "WorkingDir": "" |
| }, |
| "Id": "b750fe79269d2ec9a3c593ef05b4332b1d1a02a62b4accb2c21d589ff2f5f2dc", |
| "Parent": "27cf784147099545", |
| "Size": 6824592 |
| } |
| |
| Status Codes: |
| |
| - **200** – no error |
| - **404** – no such image |
| - **500** – server error |
| |
| ### Get the history of an image |
| |
| `GET /images/(name)/history` |
| |
| Return the history of the image `name` |
| |
| **Example request**: |
| |
| GET /images/ubuntu/history HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| Content-Type: application/json |
| |
| [ |
| { |
| "Id": "b750fe79269d", |
| "Created": 1364102658, |
| "CreatedBy": "/bin/bash" |
| }, |
| { |
| "Id": "27cf78414709", |
| "Created": 1364068391, |
| "CreatedBy": "" |
| } |
| ] |
| |
| Status Codes: |
| |
| - **200** – no error |
| - **404** – no such image |
| - **500** – server error |
| |
| ### Push an image on the registry |
| |
| `POST /images/(name)/push` |
| |
| Push the image `name` on the registry |
| |
| **Example request**: |
| |
| POST /images/test/push HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| Content-Type: application/json |
| |
| {"status": "Pushing..."} |
| {"status": "Pushing", "progress": "1/? (n/a)", "progressDetail": {"current": 1}}} |
| {"error": "Invalid..."} |
| ... |
| |
| If you wish to push an image on to a private registry, that image must already have been tagged |
| into a repository which references that registry host name and port. This repository name should |
| then be used in the URL. This mirrors the flow of the CLI. |
| |
| **Example request**: |
| |
| POST /images/registry.acme.com:5000/test/push HTTP/1.1 |
| |
| |
| Query Parameters: |
| |
| - **tag** – the tag to associate with the image on the registry, optional |
| |
| Request Headers: |
| |
| - **X-Registry-Auth** – include a base64-encoded AuthConfig |
| object. |
| |
| Status Codes: |
| |
| - **200** – no error |
| - **404** – no such image |
| - **500** – server error |
| |
| ### Tag an image into a repository |
| |
| `POST /images/(name)/tag` |
| |
| Tag the image `name` into a repository |
| |
| **Example request**: |
| |
| POST /images/test/tag?repo=myrepo&force=0&tag=v42 HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 201 Created |
| |
| Query Parameters: |
| |
| - **repo** – The repository to tag in |
| - **force** – 1/True/true or 0/False/false, default false |
| - **tag** - The new tag name |
| |
| Status Codes: |
| |
| - **201** – no error |
| - **400** – bad parameter |
| - **404** – no such image |
| - **409** – conflict |
| - **500** – server error |
| |
| ### Remove an image |
| |
| `DELETE /images/(name)` |
| |
| Remove the image `name` from the filesystem |
| |
| **Example request**: |
| |
| DELETE /images/test HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| Content-type: application/json |
| |
| [ |
| {"Untagged": "3e2f21a89f"}, |
| {"Deleted": "3e2f21a89f"}, |
| {"Deleted": "53b4f83ac9"} |
| ] |
| |
| Query Parameters: |
| |
| - **force** – 1/True/true or 0/False/false, default false |
| - **noprune** – 1/True/true or 0/False/false, default false |
| |
| Status Codes: |
| |
| - **200** – no error |
| - **404** – no such image |
| - **409** – conflict |
| - **500** – server error |
| |
| ### Search images |
| |
| `GET /images/search` |
| |
| Search for an image on [Docker Hub](https://hub.docker.com). |
| |
| > **Note**: |
| > The response keys have changed from API v1.6 to reflect the JSON |
| > sent by the registry server to the docker daemon's request. |
| |
| **Example request**: |
| |
| GET /images/search?term=sshd HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| Content-Type: application/json |
| |
| [ |
| { |
| "description": "", |
| "is_official": false, |
| "is_automated": false, |
| "name": "wma55/u1210sshd", |
| "star_count": 0 |
| }, |
| { |
| "description": "", |
| "is_official": false, |
| "is_automated": false, |
| "name": "jdswinbank/sshd", |
| "star_count": 0 |
| }, |
| { |
| "description": "", |
| "is_official": false, |
| "is_automated": false, |
| "name": "vgauthier/sshd", |
| "star_count": 0 |
| } |
| ... |
| ] |
| |
| Query Parameters: |
| |
| - **term** – term to search |
| |
| Status Codes: |
| |
| - **200** – no error |
| - **500** – server error |
| |
| ## 2.3 Misc |
| |
| ### Check auth configuration |
| |
| `POST /auth` |
| |
| Get the default username and email |
| |
| **Example request**: |
| |
| POST /auth HTTP/1.1 |
| Content-Type: application/json |
| |
| { |
| "username":" hannibal", |
| "password: "xxxx", |
| "email": "hannibal@a-team.com", |
| "serveraddress": "https://index.docker.io/v1/" |
| } |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| |
| Status Codes: |
| |
| - **200** – no error |
| - **204** – no error |
| - **500** – server error |
| |
| ### Display system-wide information |
| |
| `GET /info` |
| |
| Display system-wide information |
| |
| **Example request**: |
| |
| GET /info HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| Content-Type: application/json |
| |
| { |
| "Containers":11, |
| "Images":16, |
| "Driver":"btrfs", |
| "DriverStatus": [[""]], |
| "ExecutionDriver":"native-0.1", |
| "KernelVersion":"3.12.0-1-amd64" |
| "NCPU":1, |
| "MemTotal":2099236864, |
| "Name":"prod-server-42", |
| "ID":"7TRN:IPZB:QYBB:VPBQ:UMPP:KARE:6ZNR:XE6T:7EWV:PKF4:ZOJD:TPYS", |
| "Debug":false, |
| "NFd": 11, |
| "NGoroutines":21, |
| "NEventsListener":0, |
| "InitPath":"/usr/bin/docker", |
| "InitSha1":"", |
| "IndexServerAddress":["https://index.docker.io/v1/"], |
| "MemoryLimit":true, |
| "SwapLimit":false, |
| "IPv4Forwarding":true, |
| "Labels":["storage=ssd"], |
| "DockerRootDir": "/var/lib/docker", |
| "OperatingSystem": "Boot2Docker", |
| } |
| |
| Status Codes: |
| |
| - **200** – no error |
| - **500** – server error |
| |
| ### Show the docker version information |
| |
| `GET /version` |
| |
| Show the docker version information |
| |
| **Example request**: |
| |
| GET /version HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| Content-Type: application/json |
| |
| { |
| "ApiVersion": "1.12", |
| "Version": "0.2.2", |
| "GitCommit": "5a2a5cc+CHANGES", |
| "GoVersion": "go1.0.3" |
| } |
| |
| Status Codes: |
| |
| - **200** – no error |
| - **500** – server error |
| |
| ### Ping the docker server |
| |
| `GET /_ping` |
| |
| Ping the docker server |
| |
| **Example request**: |
| |
| GET /_ping HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| Content-Type: text/plain |
| |
| OK |
| |
| Status Codes: |
| |
| - **200** - no error |
| - **500** - server error |
| |
| ### Create a new image from a container's changes |
| |
| `POST /commit` |
| |
| Create a new image from a container's changes |
| |
| **Example request**: |
| |
| POST /commit?container=44c004db4b17&comment=message&repo=myrepo HTTP/1.1 |
| Content-Type: application/json |
| |
| { |
| "Hostname": "", |
| "Domainname": "", |
| "User": "", |
| "Memory": 0, |
| "MemorySwap": 0, |
| "CpuShares": 512, |
| "Cpuset": "0,1", |
| "AttachStdin": false, |
| "AttachStdout": true, |
| "AttachStderr": true, |
| "PortSpecs": null, |
| "Tty": false, |
| "OpenStdin": false, |
| "StdinOnce": false, |
| "Env": null, |
| "Cmd": [ |
| "date" |
| ], |
| "Volumes": { |
| "/tmp": {} |
| }, |
| "WorkingDir": "", |
| "NetworkDisabled": false, |
| "ExposedPorts": { |
| "22/tcp": {} |
| } |
| } |
| |
| **Example response**: |
| |
| HTTP/1.1 201 Created |
| Content-Type: application/json |
| |
| {"Id": "596069db4bf5"} |
| |
| Json Parameters: |
| |
| - **config** - the container's configuration |
| |
| Query Parameters: |
| |
| - **container** – source container |
| - **repo** – repository |
| - **tag** – tag |
| - **comment** – commit message |
| - **author** – author (e.g., "John Hannibal Smith |
| <[hannibal@a-team.com](mailto:hannibal%40a-team.com)>") |
| |
| Status Codes: |
| |
| - **201** – no error |
| - **404** – no such container |
| - **500** – server error |
| |
| ### Monitor Docker's events |
| |
| `GET /events` |
| |
| Get container events from docker, either in real time via streaming, or via |
| polling (using since). |
| |
| Docker containers will report the following events: |
| |
| create, destroy, die, exec_create, exec_start, export, kill, oom, pause, restart, start, stop, unpause |
| |
| and Docker images will report: |
| |
| untag, delete |
| |
| **Example request**: |
| |
| GET /events?since=1374067924 |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| Content-Type: application/json |
| |
| {"status": "create", "id": "dfdf82bd3881","from": "ubuntu:latest", "time":1374067924} |
| {"status": "start", "id": "dfdf82bd3881","from": "ubuntu:latest", "time":1374067924} |
| {"status": "stop", "id": "dfdf82bd3881","from": "ubuntu:latest", "time":1374067966} |
| {"status": "destroy", "id": "dfdf82bd3881","from": "ubuntu:latest", "time":1374067970} |
| |
| Query Parameters: |
| |
| - **since** – timestamp used for polling |
| - **until** – timestamp used for polling |
| - **filters** – a json encoded value of the filters (a map[string][]string) to process on the event list. Available filters: |
| - event=<string> -- event to filter |
| - image=<string> -- image to filter |
| - container=<string> -- container to filter |
| |
| Status Codes: |
| |
| - **200** – no error |
| - **500** – server error |
| |
| ### Get a tarball containing all images in a repository |
| |
| `GET /images/(name)/get` |
| |
| Get a tarball containing all images and metadata for the repository specified |
| by `name`. |
| |
| If `name` is a specific name and tag (e.g. ubuntu:latest), then only that image |
| (and its parents) are returned. If `name` is an image ID, similarly only that |
| image (and its parents) are returned, but with the exclusion of the |
| 'repositories' file in the tarball, as there were no image names referenced. |
| |
| See the [image tarball format](#image-tarball-format) for more details. |
| |
| **Example request** |
| |
| GET /images/ubuntu/get |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| Content-Type: application/x-tar |
| |
| Binary data stream |
| |
| Status Codes: |
| |
| - **200** – no error |
| - **500** – server error |
| |
| ### Get a tarball containing all images. |
| |
| `GET /images/get` |
| |
| Get a tarball containing all images and metadata for one or more repositories. |
| |
| For each value of the `names` parameter: if it is a specific name and tag (e.g. |
| ubuntu:latest), then only that image (and its parents) are returned; if it is |
| an image ID, similarly only that image (and its parents) are returned and there |
| would be no names referenced in the 'repositories' file for this image ID. |
| |
| See the [image tarball format](#image-tarball-format) for more details. |
| |
| **Example request** |
| |
| GET /images/get?names=myname%2Fmyapp%3Alatest&names=busybox |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| Content-Type: application/x-tar |
| |
| Binary data stream |
| |
| Status Codes: |
| |
| - **200** – no error |
| - **500** – server error |
| |
| ### Load a tarball with a set of images and tags into docker |
| |
| `POST /images/load` |
| |
| Load a set of images and tags into the docker repository. |
| See the [image tarball format](#image-tarball-format) for more details. |
| |
| **Example request** |
| |
| POST /images/load |
| |
| Tarball in body |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| |
| Status Codes: |
| |
| - **200** – no error |
| - **500** – server error |
| |
| ### Image tarball format |
| |
| An image tarball contains one directory per image layer (named using its long ID), |
| each containing three files: |
| |
| 1. `VERSION`: currently `1.0` - the file format version |
| 2. `json`: detailed layer information, similar to `docker inspect layer_id` |
| 3. `layer.tar`: A tarfile containing the filesystem changes in this layer |
| |
| The `layer.tar` file will contain `aufs` style `.wh..wh.aufs` files and directories |
| for storing attribute changes and deletions. |
| |
| If the tarball defines a repository, there will also be a `repositories` file at |
| the root that contains a list of repository and tag names mapped to layer IDs. |
| |
| ``` |
| {"hello-world": |
| {"latest": "565a9d68a73f6706862bfe8409a7f659776d4d60a8d096eb4a3cbce6999cc2a1"} |
| } |
| ``` |
| |
| ### Exec Create |
| |
| `POST /containers/(id or name)/exec` |
| |
| Sets up an exec instance in a running container `id` |
| |
| **Example request**: |
| |
| POST /containers/e90e34656806/exec HTTP/1.1 |
| Content-Type: application/json |
| |
| { |
| "AttachStdin": false, |
| "AttachStdout": true, |
| "AttachStderr": true, |
| "Tty": false, |
| "Cmd": [ |
| "date" |
| ], |
| } |
| |
| **Example response**: |
| |
| HTTP/1.1 201 Created |
| Content-Type: application/json |
| |
| { |
| "Id": "f90e34656806" |
| } |
| |
| Json Parameters: |
| |
| - **AttachStdin** - Boolean value, attaches to stdin of the exec command. |
| - **AttachStdout** - Boolean value, attaches to stdout of the exec command. |
| - **AttachStderr** - Boolean value, attaches to stderr of the exec command. |
| - **Tty** - Boolean value to allocate a pseudo-TTY |
| - **Cmd** - Command to run specified as a string or an array of strings. |
| |
| |
| Status Codes: |
| |
| - **201** – no error |
| - **404** – no such container |
| |
| ### Exec Start |
| |
| `POST /exec/(id)/start` |
| |
| Starts a previously set up exec instance `id`. If `detach` is true, this API |
| returns after starting the `exec` command. Otherwise, this API sets up an |
| interactive session with the `exec` command. |
| |
| **Example request**: |
| |
| POST /exec/e90e34656806/start HTTP/1.1 |
| Content-Type: application/json |
| |
| { |
| "Detach": false, |
| "Tty": false, |
| } |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| Content-Type: application/vnd.docker.raw-stream |
| |
| {{ STREAM }} |
| |
| Json Parameters: |
| |
| - **Detach** - Detach from the exec command |
| - **Tty** - Boolean value to allocate a pseudo-TTY |
| |
| Status Codes: |
| |
| - **200** – no error |
| - **404** – no such exec instance |
| |
| **Stream details**: |
| Similar to the stream behavior of `POST /containers/(id or name)/attach` API |
| |
| ### Exec Resize |
| |
| `POST /exec/(id)/resize` |
| |
| Resizes the tty session used by the exec command `id`. |
| This API is valid only if `tty` was specified as part of creating and starting the exec command. |
| |
| **Example request**: |
| |
| POST /exec/e90e34656806/resize HTTP/1.1 |
| Content-Type: text/plain |
| |
| **Example response**: |
| |
| HTTP/1.1 201 Created |
| Content-Type: text/plain |
| |
| Query Parameters: |
| |
| - **h** – height of tty session |
| - **w** – width |
| |
| Status Codes: |
| |
| - **201** – no error |
| - **404** – no such exec instance |
| |
| ### Exec Inspect |
| |
| `GET /exec/(id)/json` |
| |
| Return low-level information about the exec command `id`. |
| |
| **Example request**: |
| |
| GET /exec/11fb006128e8ceb3942e7c58d77750f24210e35f879dd204ac975c184b820b39/json HTTP/1.1 |
| |
| **Example response**: |
| |
| HTTP/1.1 200 OK |
| Content-Type: plain/text |
| |
| { |
| "ID" : "11fb006128e8ceb3942e7c58d77750f24210e35f879dd204ac975c184b820b39", |
| "Running" : false, |
| "ExitCode" : 2, |
| "ProcessConfig" : { |
| "privileged" : false, |
| "user" : "", |
| "tty" : false, |
| "entrypoint" : "sh", |
| "arguments" : [ |
| "-c", |
| "exit 2" |
| ] |
| }, |
| "OpenStdin" : false, |
| "OpenStderr" : false, |
| "OpenStdout" : false, |
| "Container" : { |
| "State" : { |
| "Running" : true, |
| "Paused" : false, |
| "Restarting" : false, |
| "OOMKilled" : false, |
| "Pid" : 3650, |
| "ExitCode" : 0, |
| "Error" : "", |
| "StartedAt" : "2014-11-17T22:26:03.717657531Z", |
| "FinishedAt" : "0001-01-01T00:00:00Z" |
| }, |
| "ID" : "8f177a186b977fb451136e0fdf182abff5599a08b3c7f6ef0d36a55aaf89634c", |
| "Created" : "2014-11-17T22:26:03.626304998Z", |
| "Path" : "date", |
| "Args" : [], |
| "Config" : { |
| "Hostname" : "8f177a186b97", |
| "Domainname" : "", |
| "User" : "", |
| "Memory" : 0, |
| "MemorySwap" : 0, |
| "CpuShares" : 0, |
| "Cpuset" : "", |
| "AttachStdin" : false, |
| "AttachStdout" : false, |
| "AttachStderr" : false, |
| "PortSpecs" : null, |
| "ExposedPorts" : null, |
| "Tty" : false, |
| "OpenStdin" : false, |
| "StdinOnce" : false, |
| "Env" : [ "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" ], |
| "Cmd" : [ |
| "date" |
| ], |
| "Image" : "ubuntu", |
| "Volumes" : null, |
| "WorkingDir" : "", |
| "Entrypoint" : null, |
| "NetworkDisabled" : false, |
| "MacAddress" : "", |
| "OnBuild" : null, |
| "SecurityOpt" : null |
| }, |
| "Image" : "5506de2b643be1e6febbf3b8a240760c6843244c41e12aa2f60ccbb7153d17f5", |
| "NetworkSettings" : { |
| "IPAddress" : "172.17.0.2", |
| "IPPrefixLen" : 16, |
| "MacAddress" : "02:42:ac:11:00:02", |
| "Gateway" : "172.17.42.1", |
| "Bridge" : "docker0", |
| "PortMapping" : null, |
| "Ports" : {} |
| }, |
| "ResolvConfPath" : "/var/lib/docker/containers/8f177a186b977fb451136e0fdf182abff5599a08b3c7f6ef0d36a55aaf89634c/resolv.conf", |
| "HostnamePath" : "/var/lib/docker/containers/8f177a186b977fb451136e0fdf182abff5599a08b3c7f6ef0d36a55aaf89634c/hostname", |
| "HostsPath" : "/var/lib/docker/containers/8f177a186b977fb451136e0fdf182abff5599a08b3c7f6ef0d36a55aaf89634c/hosts", |
| "Name" : "/test", |
| "Driver" : "aufs", |
| "ExecDriver" : "native-0.2", |
| "MountLabel" : "", |
| "ProcessLabel" : "", |
| "AppArmorProfile" : "", |
| "RestartCount" : 0, |
| "Volumes" : {}, |
| "VolumesRW" : {} |
| } |
| } |
| |
| Status Codes: |
| |
| - **200** – no error |
| - **404** – no such exec instance |
| - **500** - server error |
| |
| # 3. Going further |
| |
| ## 3.1 Inside `docker run` |
| |
| As an example, the `docker run` command line makes the following API calls: |
| |
| - Create the container |
| |
| - If the status code is 404, it means the image doesn't exist: |
| - Try to pull it |
| - Then retry to create the container |
| |
| - Start the container |
| |
| - If you are not in detached mode: |
| - Attach to the container, using logs=1 (to have stdout and |
| stderr from the container's start) and stream=1 |
| |
| - If in detached mode or only stdin is attached: |
| - Display the container's id |
| |
| ## 3.2 Hijacking |
| |
| In this version of the API, /attach, uses hijacking to transport stdin, |
| stdout and stderr on the same socket. |
| |
| To hint potential proxies about connection hijacking, Docker client sends |
| connection upgrade headers similarly to websocket. |
| |
| Upgrade: tcp |
| Connection: Upgrade |
| |
| When Docker daemon detects the `Upgrade` header, it will switch its status code |
| from **200 OK** to **101 UPGRADED** and resend the same headers. |
| |
| This might change in the future. |
| |
| ## 3.3 CORS Requests |
| |
| To set cross origin requests to the remote api, please add flag "--api-enable-cors" |
| when running docker in daemon mode. |
| |
| $ docker -d -H="192.168.1.9:2375" --api-enable-cors |
