garage/doc/drafts/admin-api.md

Access control

The admin API uses two different tokens for acces control, that are specified in the config file's [admin] section:

• metrics_token: the token for accessing the Metrics endpoint (if this token is not set in the config file, the Metrics endpoint can be accessed without access control);
• admin_token: the token for accessing all of the other administration endpoints (if this token is not set in the config file, these endpoints can be accessed without access control).

Administration API endpoints

Metrics-related endpoints

Metrics GET /metrics

Returns internal Garage metrics in Prometheus format.

Cluster operations

GetClusterStatus GET /status

Returns the cluster's current status in JSON, including:

• ID of the node being queried and its version of the Garage daemon
• Live nodes
• Currently configured cluster layout
• Staged changes to the cluster layout

Example response body:

{
  "node": "ec79480e0ce52ae26fd00c9da684e4fa56658d9c64cdcecb094e936de0bfe71f",
  "garage_version": "git:v0.8.0",
  "knownNodes": {
    "ec79480e0ce52ae26fd00c9da684e4fa56658d9c64cdcecb094e936de0bfe71f": {
      "addr": "10.0.0.11:3901",
      "is_up": true,
      "last_seen_secs_ago": 9,
      "hostname": "node1"
    },
    "4a6ae5a1d0d33bf895f5bb4f0a418b7dc94c47c0dd2eb108d1158f3c8f60b0ff": {
      "addr": "10.0.0.12:3901",
      "is_up": true,
      "last_seen_secs_ago": 1,
      "hostname": "node2"
    },
    "23ffd0cdd375ebff573b20cc5cef38996b51c1a7d6dbcf2c6e619876e507cf27": {
      "addr": "10.0.0.21:3901",
      "is_up": true,
      "last_seen_secs_ago": 7,
      "hostname": "node3"
    },
    "e2ee7984ee65b260682086ec70026165903c86e601a4a5a501c1900afe28d84b": {
      "addr": "10.0.0.22:3901",
      "is_up": true,
      "last_seen_secs_ago": 1,
      "hostname": "node4"
    }
  },
  "layout": {
    "version": 12,
    "roles": {
      "ec79480e0ce52ae26fd00c9da684e4fa56658d9c64cdcecb094e936de0bfe71f": {
        "zone": "dc1",
        "capacity": 4,
        "tags": [
          "node1"
        ]
      },
      "4a6ae5a1d0d33bf895f5bb4f0a418b7dc94c47c0dd2eb108d1158f3c8f60b0ff": {
        "zone": "dc1",
        "capacity": 6,
        "tags": [
          "node2"
        ]
      },
      "23ffd0cdd375ebff573b20cc5cef38996b51c1a7d6dbcf2c6e619876e507cf27": {
        "zone": "dc2",
        "capacity": 10,
        "tags": [
          "node3"
        ]
      }
    },
    "stagedRoleChanges": {
      "e2ee7984ee65b260682086ec70026165903c86e601a4a5a501c1900afe28d84b": {
        "zone": "dc2",
        "capacity": 5,
        "tags": [
          "node4"
        ]
      }
    }
  }
}

GetClusterLayout GET /layout

Returns the cluster's current layout in JSON, including:

• Currently configured cluster layout
• Staged changes to the cluster layout

(the info returned by this endpoint is a subset of the info returned by GetClusterStatus)

Example response body:

{
  "version": 12,
  "roles": {
    "ec79480e0ce52ae26fd00c9da684e4fa56658d9c64cdcecb094e936de0bfe71f": {
      "zone": "dc1",
      "capacity": 4,
      "tags": [
        "node1"
      ]
    },
    "4a6ae5a1d0d33bf895f5bb4f0a418b7dc94c47c0dd2eb108d1158f3c8f60b0ff": {
      "zone": "dc1",
      "capacity": 6,
      "tags": [
        "node2"
      ]
    },
    "23ffd0cdd375ebff573b20cc5cef38996b51c1a7d6dbcf2c6e619876e507cf27": {
      "zone": "dc2",
      "capacity": 10,
      "tags": [
        "node3"
      ]
    }
  },
  "stagedRoleChanges": {
    "e2ee7984ee65b260682086ec70026165903c86e601a4a5a501c1900afe28d84b": {
      "zone": "dc2",
      "capacity": 5,
      "tags": [
        "node4"
      ]
    }
  }
}

UpdateClusterLayout POST /layout

Send modifications to the cluster layout. These modifications will be included in the staged role changes, visible in subsequent calls of GetClusterLayout. Once the set of staged changes is satisfactory, the user may call ApplyClusterLayout to apply the changed changes, or Revert ClusterLayout to clear all of the staged changes in the layout.

Request body format:

{
  <node_id>: {
    "capacity": <new_capacity>,
    "zone": <new_zone>,
    "tags": [
      <new_tag>,
      ...
    ]
  },
  <node_id_to_remove>: null,
  ...
}

Contrary to the CLI that may update only a subset of the fields capacity, zone and tags, when calling this API all of these values must be specified.

ApplyClusterLayout POST /layout/apply

Applies to the cluster the layout changes currently registered as staged layout changes.

Request body format:

{
  "version": 13
}

Similarly to the CLI, the body must include the version of the new layout that will be created, which MUST be 1 + the value of the currently existing layout in the cluster.

RevertClusterLayout POST /layout/revert

Clears all of the staged layout changes.

Request body format:

{
  "version": 13
}

Reverting the staged changes is done by incrementing the version number and clearing the contents of the staged change list. Similarly to the CLI, the body must include the incremented version number, which MUST be 1 + the value of the currently existing layout in the cluster.

Access key operations

ListKeys GET /key

Returns all API access keys in the cluster.

Example response:

[
  {
    "id": "GK31c2f218a2e44f485b94239e",
    "name": "test"
  },
  {
    "id": "GKe10061ac9c2921f09e4c5540",
    "name": "test2"
  }
]

CreateKey POST /key

Creates a new API access key.

Request body format:

{
	"name": "NameOfMyKey"
}

GetKeyInfo GET /key?id=<acces key id>

GetKeyInfo GET /key?search=<pattern>

Returns information about the requested API access key.

If id is set, the key is looked up using its exact identifier (faster). If search is set, the key is looked up using its name or prefix of identifier (slower, all keys are enumerated to do this).

Example response:

{
  "name": "test",
  "accessKeyId": "GK31c2f218a2e44f485b94239e",
  "secretAccessKey": "b892c0665f0ada8a4755dae98baa3b133590e11dae3bcc1f9d769d67f16c3835",
  "permissions": {
    "createBucket": false
  },
  "buckets": [
    {
      "id": "70dc3bed7fe83a75e46b66e7ddef7d56e65f3c02f9f80b6749fb97eccb5e1033",
      "globalAliases": [
        "test2"
      ],
      "localAliases": [],
      "permissions": {
        "read": true,
        "write": true,
        "owner": false
      }
    },
    {
      "id": "d7452a935e663fc1914f3a5515163a6d3724010ce8dfd9e4743ca8be5974f995",
      "globalAliases": [
        "test3"
      ],
      "localAliases": [],
      "permissions": {
        "read": true,
        "write": true,
        "owner": false
      }
    },
    {
      "id": "e6a14cd6a27f48684579ec6b381c078ab11697e6bc8513b72b2f5307e25fff9b",
      "globalAliases": [],
      "localAliases": [
        "test"
      ],
      "permissions": {
        "read": true,
        "write": true,
        "owner": true
      }
    },
    {
      "id": "96470e0df00ec28807138daf01915cfda2bee8eccc91dea9558c0b4855b5bf95",
      "globalAliases": [
        "alex"
      ],
      "localAliases": [],
      "permissions": {
        "read": true,
        "write": true,
        "owner": true
      }
    }
  ]
}

DeleteKey DELETE /key?id=<acces key id>

Deletes an API access key.

UpdateKey POST /key?id=<acces key id>

Updates information about the specified API access key.

Request body format:

{
	"name": "NameOfMyKey",
	"allow": {
		"createBucket": true,
	},
	"deny": {}
}

All fields (name, allow and deny) are optionnal. If they are present, the corresponding modifications are applied to the key, otherwise nothing is changed. The possible flags in allow and deny are: createBucket.