Volumes HTTP API

The /volume endpoints are used to query for and interact with volumes.

List Volumes

This endpoint lists all volumes.

Method	Path	Produces
`GET`	`/v1/volumes`	`application/json`

The table below shows this endpoint's support for blocking queries and required ACLs.

Blocking Queries	ACL Required
`YES`	`namespace:csi-list-volume`

Parameters

type (string: "")- Specifies the type of volume to query. Currently only supports csi. This is specified as a query string parameter. Returns an empty list if omitted.
node_id (string: "") - Specifies a string to filter volumes based on an Node ID prefix. Because the value is decoded to bytes, the prefix must have an even number of hexadecimal characters (0-9a-f). This is specified as a query string parameter.
plugin_id (string: "") - Specifies a string to filter volumes based on a plugin ID prefix. Because the value is decoded to bytes, the prefix must have an even number of hexadecimal characters (0-9a-f). This is specified as a query string parameter.

Sample Request

$ curl \
    https://localhost:4646/v1/volumes?type=csi&node_id=foo&plugin_id=plugin-id1

Sample Response

[
  {
    "ID": "volume-id1",
    "ExternalID": "volume-id1",
    "Namespace": "default",
    "Name": "volume id1",
    "Topologies": [
      {
        "foo": "bar"
      }
    ],
    "AccessMode": "multi-node-single-writer",
    "AttachmentMode": "file-system",
    "Schedulable": true,
    "PluginID": "plugin-id1",
    "Provider": "ebs",
    "ControllerRequired": true,
    "ControllersHealthy": 3,
    "ControllersExpected": 3,
    "NodesHealthy": 15,
    "NodesExpected": 18,
    "ResourceExhausted": 0,
    "CreateIndex": 42,
    "ModifyIndex": 64
  }
]

Read Volume

This endpoint reads information about a specific volume.

Method	Path	Produces
`GET`	`/v1/volume/csi/:volume_id`	`application/json`

The table below shows this endpoint's support for blocking queries and required ACLs.

Blocking Queries	ACL Required
`YES`	`namespace:csi-read-volume`

Parameters

:volume_id (string: <required>)- Specifies the ID of the volume. This must be the full ID. This is specified as part of the path.

Sample Request

$ curl \
    https://localhost:4646/v1/volume/csi/volume-id1

Sample Response

{
  "ID": "volume-id1",
  "Name": "volume id1",
  "Namespace": "default",
  "ExternalID": "volume-id1",
  "Topologies": [{ "foo": "bar" }],
  "AccessMode": "multi-node-single-writer",
  "AttachmentMode": "file-system",
  "Allocations": [
    {
      "ID": "a8198d79-cfdb-6593-a999-1e9adabcba2e",
      "EvalID": "5456bd7a-9fc0-c0dd-6131-cbee77f57577",
      "Name": "example.cache[0]",
      "NodeID": "fb2170a8-257d-3c64-b14d-bc06cc94e34c",
      "PreviousAllocation": "516d2753-0513-cfc7-57ac-2d6fac18b9dc",
      "NextAllocation": "cd13d9b9-4f97-7184-c88b-7b451981616b",
      "RescheduleTracker": {
        "Events": [
          {
            "PrevAllocID": "516d2753-0513-cfc7-57ac-2d6fac18b9dc",
            "PrevNodeID": "9230cd3b-3bda-9a3f-82f9-b2ea8dedb20e",
            "RescheduleTime": 1517434161192946200,
            "Delay": "5000000000"
          }
        ]
      },
      "JobID": "example",
      "TaskGroup": "cache",
      "DesiredStatus": "run",
      "DesiredDescription": "",
      "ClientStatus": "running",
      "ClientDescription": "",
      "TaskStates": {
        "redis": {
          "State": "running",
          "FinishedAt": "0001-01-01T00:00:00Z",
          "LastRestart": "0001-01-01T00:00:00Z",
          "Restarts": 0,
          "StartedAt": "2017-07-25T23:36:26.106431265Z",
          "Failed": false,
          "Events": [
            {
              "Type": "Received",
              "Time": 1495747371795703800,
              "FailsTask": false,
              "RestartReason": "",
              "SetupError": "",
              "DriverError": "",
              "ExitCode": 0,
              "Signal": 0,
              "Message": "",
              "KillTimeout": 0,
              "KillError": "",
              "KillReason": "",
              "StartDelay": 0,
              "DownloadError": "",
              "ValidationError": "",
              "DiskLimit": 0,
              "FailedSibling": "",
              "VaultError": "",
              "TaskSignalReason": "",
              "TaskSignal": "",
              "DriverMessage": ""
            },
            {
              "Type": "Driver",
              "Time": 1495747371798867200,
              "FailsTask": false,
              "RestartReason": "",
              "SetupError": "",
              "DriverError": "",
              "ExitCode": 0,
              "Signal": 0,
              "Message": "",
              "KillTimeout": 0,
              "KillError": "",
              "KillReason": "",
              "StartDelay": 0,
              "DownloadError": "",
              "ValidationError": "",
              "DiskLimit": 0,
              "FailedSibling": "",
              "VaultError": "",
              "TaskSignalReason": "",
              "TaskSignal": "",
              "DriverMessage": "Downloading image redis:3.2"
            },
            {
              "Type": "Started",
              "Time": 1495747379525667800,
              "FailsTask": false,
              "RestartReason": "",
              "SetupError": "",
              "DriverError": "",
              "ExitCode": 0,
              "Signal": 0,
              "Message": "",
              "KillTimeout": 0,
              "KillError": "",
              "KillReason": "",
              "StartDelay": 0,
              "DownloadError": "",
              "ValidationError": "",
              "DiskLimit": 0,
              "FailedSibling": "",
              "VaultError": "",
              "TaskSignalReason": "",
              "TaskSignal": "",
              "DriverMessage": ""
            }
          ]
        }
      },
      "CreateIndex": 54,
      "ModifyIndex": 57,
      "CreateTime": 1495747371794276400,
      "ModifyTime": 1495747371794276400
    }
  ],
  "Schedulable": true,
  "PluginID": "plugin-id1",
  "Provider": "ebs",
  "Version": "1.0.1",
  "ControllerRequired": true,
  "ControllersHealthy": 3,
  "ControllersExpected": 3,
  "NodesHealthy": 15,
  "NodesExpected": 18,
  "ResourceExhausted": 0,
  "CreateIndex": 42,
  "ModifyIndex": 64
}

Register Volume

This endpoint registers an external volume with Nomad. It is an error to register an existing volume.

Method	Path	Produces
`PUT`	`/v1/volume/csi/:volume_id`	`application/json`

The table below shows this endpoint's support for blocking queries and required ACLs.

Blocking Queries	ACL Required
`NO`	`namespace:csi-write-volume`

Parameters

:volume_id (string: <required>)- Specifies the ID of the volume. This must be the full ID. This is specified as part of the path.

Sample Payload

The payload must include a JSON document that described the volume's parameters.

{
  "ID": "volume-id1",
  "Name": "volume id1",
  "Namespace": "default",
  "ExternalID": "volume-id1",
  "Topologies": [{ "foo": "bar" }],
  "AccessMode": "multi-node-single-writer",
  "AttachmentMode": "file-system",
  "PluginID": "plugin-id1"
}

Sample Request

$ curl \
    --request PUT \
    --data @payload.json \
    https://localhost:4646/v1/volume/csi/volume-id1

Delete Volume

This endpoint deregisters an external volume with Nomad. It is an error to deregister a volume that is in use.

Method	Path	Produces
`DELTE`	`/v1/volume/csi/:volume_id`	`application/json`

The table below shows this endpoint's support for blocking queries and required ACLs.

Blocking Queries	ACL Required
`NO`	`namespace:csi-write-volume`

Parameters

:volume_id (string: <required>)- Specifies the ID of the volume. This must be the full ID. This is specified as part of the path.

Sample Request

$ curl \
    --request DELETE \
    --data @payload.json \
    https://localhost:4646/v1/volume/csi/volume-id1