Get Measurements for a MongoDB Process¶

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Resource
Response Elements
Example Request
Example Response

Note

Groups and projects are synonymous terms. Your {GROUP-ID} is the same as your project ID. For existing groups, your group/project ID remains the same. The resource and corresponding endpoints use the term groups.

Get measurements for a specific Atlas MongoDB process. A Atlas MongoDB process can be either a mongod or mongos.

The Atlas API authenticates using HTTP Digest Authentication. Provide a programmatic API public key and corresponding private key as the username and password when constructing the HTTP request.

To learn how to configure API access for an Atlas project, see Configure Atlas API Access.

Base URL: https://cloud.mongodb.com/api/atlas/v1.0

Resource¶

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GET /groups/{GROUP-ID}/processes/{HOST}:{PORT}/measurements

Request Path Parameters¶

Parameter	Required/Optional	Description
`GROUP-ID`	Required	ID of the project that owns this Atlas MongoDB process.
`HOST`	Required	The hostname of the machine running the Atlas MongoDB process.
`PORT`	Required	The port to which the Atlas MongoDB process listens.

Request Query Parameters¶

Field	Required/Optional	Description
`granularity`	Required	An ISO-8601-formatted time period that specifies the interval between measurement data points. For example, `PT1M` specifies 1-minute granularity. The following subset of ISO-8601-formatted time periods are supported: `PT1M` `PT5M` `PT1H` `P1D` When you specify `granularity`, you must specify either `period` or `start` and `end`.
`period`	Required	An ISO-8601-formatted time period that specifies the length of time in the past to query. For example, to request the last 36 hours, specify: `period=P1DT12H`. Mutually exclusive with `start` and `end`.
`start`	Required	The time at which to start retrieving measurements, as specified by an ISO-8601 timestamp string. If you specify `start` you must also specify `end`. Mutually exclusive with `period`.
`end`	Required	The time at which to stop retrieving measurements, as specified by an ISO-8601 timestamp string. If you specify `end` you must also specify `start`. Mutually exclusive with `period`.
`m`	Optional	Specifies which measurements to return. If `m` is not specified, all measurements are returned. To specify multiple values for `m`, you must repeat the `m` parameter. For example: copy ../measurements?m=<measurement>&m=<measurement>&m=... You must specify measurements that are valid for the host. Atlas returns an error if any specified measurements are invalid For available measurements, see Measurement Values.
`pageNum`	Optional.	The page to return. Defaults to `1`.
`itemsPerPage`	Optional.	Number of items to return per page, up to a maximum of 500. Defaults to `100`.
`includeCount`	Optional.	Specifies whether the response returns the `totalCount` field. Defaults to `true`.
`envelope`	Optional.	A boolean that specifies whether or not to wrap the response in an envelope. Defaults to `false`.
`pretty`	Optional	A boolean that specifies whether or not to return a “pretty-printed” JSON document. Defaults to `false`.

Request Body Parameters¶

This endpoint does not use HTTP request body parameters.

Response Elements¶

Free Tier

M0 Free Tier clusters return a subset of the metrics documented here.

If you set the query element envelope to true, the response is wrapped by the content object.

The HTTP response returns a JSON document that includes the following objects:

Name	Type	Description
`end`	string	Timestamp in ISO 8601 date and time format in UTC when the period for which to retrieve measurements ends.
`granularity`	string	Duration in ISO 8601 notation that specifies the size of each data point’s covered interval. Example `PT5M` specifies a 5-minute granularity.
`groupId`	string	Unique identifier of the project that owns the Atlas MongoDB process.
`hostId`	string	Hostname of the machine running the Atlas MongoDB process.
`links`	array of objects	An array of documents, representing a link to one or more sub-resources and/or related resources such as list pagination. See Linking for more information.
`measurements`	array of objects	An array of measurements and their data points.
`measurements` `.dataPoints`	array of objects	Each object represents a single data point. If there is no data point available for a particular moment in time (i.e., a timestamp), the `value` field is set to `null`.
`measurements` `.dataPoints` `.timestamp`	string	Timestamp of the beginning of the time interval represented by this data point.
`measurements` `.dataPoints` `.value`	float	Value of the data point.
`measurements` `.name`	string	Name of the measurement. For possible values, see Host Metrics.
`measurements` `.units`	string	Quanitifier of this measurement. You may use: `PERCENT` `MILLISECONDS` `BYTES` `GIGABYTES` `BYTES_PER_SECOND` `MEGABYTES_PER_SECOND` `GIGABYTES_PER_HOUR` `SCALAR_PER_SECOND` `SCALAR`
`processId`	string	Hostname and port of the machine running the Atlas MongoDB process.
`start`	string	Timestamp in ISO 8601 date and time format in UTC when the period for which to retrieve measurements starts.

Example Request¶

The following example request sets a granularity and period of one minute. Replace the information in brackets {} with your own Atlas information to execute this example request:

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curl -u "<ATLAS-USERNAME>:<API-KEY>" --digest -i "https://cloud.mongodb.com/api/atlas/v1.0/groups/{GROUP-ID}/processes/{HOST}:{PORT}}/measurements?granularity=PT1M&period=PT1M&pretty=true"

Example Response¶

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HTTP/1.1 200 OK
Vary: Accept-Encoding
Cache-Control: no-cache, no-transform, must-revalidate, proxy-revalidate, max-age=0
Content-Type: application/json
Strict-Transport-Security: max-age=300
Date: Tue, 22 Aug 2017 20:31:22 GMT
Connection: keep-alive
Content-Length: 16848

{
  "end" : "2017-08-22T20:31:14Z",
  "granularity" : "PT1M",
  "groupId" : "12345678",
  "hostId" : "shard-00-00.mongodb.net:27017",
  "links" : [ {
    "href" : "https://cloud.mongodb.com/api/atlas/v1.0/groups/12345678/processes/shard-00-00.mongodb.net:27017/measurements?granularity=PT1M&period=PT1M&pretty=true",
    "rel" : "self"
  }, {
    "href" : "https://cloud.mongodb.com/api/atlas/v1.0/groups/12345678/processes/shard-00-00.mongodb.net:27017",
    "rel" : "http://mms.mongodb.com/host"
  } ],
  "measurements" : [ {
    "dataPoints" : [ {
      "timestamp" : "2017-08-22T20:31:12Z",
      "value" : null
    }, {
      "timestamp" : "2017-08-22T20:31:14Z",
      "value" : null
    } ],
    "name" : "ASSERT_REGULAR",
    "units" : "SCALAR_PER_SECOND"
  }, {
    ...
  }],
  "processId" : "shard-00-00.mongodb.net:27017",
  "start" : "2017-08-22T20:30:45Z"
}

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