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Get Global Clusters Data

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  • Syntax
  • Request Path Parameters
  • Request Query Parameters
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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.

The Atlas Administration 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 Get Started with the Atlas Administration API.

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

Retrieve all managed namespaces and custom zone mappings associated with a Global Cluster.

GET /groups/{GROUP-ID}/clusters/{CLUSTER-NAME}/globalWrites
Path Element
Required/Optional
Description
GROUP-ID
Required.
The unique identifier for the project that contains the Global Cluster.
CLUSTER-NAME
Required.
The name of the Global Cluster.

This endpoint may use any of the HTTP request query parameters available to all Atlas Administration API resources. These are all optional.

Name
Type
Necessity
Description
Default
pageNum
integer
Optional
Page number, starting with one, that Atlas returns of the total number of objects.
1
itemsPerPage
integer
Optional
Number of items that Atlas returns per page, up to a maximum of 500.
100
includeCount
boolean
Optional
Flag that indicates whether Atlas returns the totalCount parameter in the response body.
true
pretty
boolean
Optional
Flag that indicates whether Atlas returns the JSON response in the prettyprint format.
false
envelope
boolean
Optional

Flag that indicates whether Atlas wraps the response in an envelope.

Some API clients cannot access the HTTP response headers or status code. To remediate this, set envelope=true in the query.

Endpoints that return a list of results use the results object as an envelope. Atlas adds the status parameter to the response body.

false

This endpoint does not use HTTP request body parameters.

Name
Type
Description
customZoneMapping
document
A comma-separated list of all custom zone mappings defined for the Global Cluster. Atlas automatically maps each location code to the closest geographical zone. Custom zone mappings allow administrators to override these automatic mappings. If your Global Cluster does not have any custom zone mappings, this document is empty.
managedNamespaces
array of documents
Each document specifies a namespace for a Global Cluster managed by Atlas.
managedNamespaces[n].collection
string
The name of the collection associated with the managed namespace.
managedNamespaces[n].customShardKey
string
The custom shard key for the collection. Global Clusters require a compound shard key consisting of a location field and a user-selected second key, the custom shard key.
managedNamespaces[n].db
string
The name of the database containing the collection.
managedNamespaces[n].isCustomShardKeyHashed
boolean

Flag that specifies whether the custom shard key for the collection is hashed. Value can be one of the following:

  • true - if custom shard key is hashed
  • false - if custom shard key is not hashed (default)

Default value is false. If false, Atlas uses ranged sharding. This is only available for Atlas clusters with MongoDB v4.4 and later.

managedNamespaces[n].isShardKeyUnique
boolean

Flag that specifies whether the underlying index enforces a unique constraint. Value can be one of the following:

  • true - if shard key is unique
  • false - if shard key is not unique (default)
managedNamespaces[n].numInitialChunks
integer
Minimum number of chunks to create initially when sharding an empty collection with a hashed shard key. To learn more, see Global Cluster Sharding Reference. This is only available for Atlas clusters with MongoDB v4.4 and later.
managedNamespaces[n].presplitHashedZones
boolean

Flag that specifies whether to perform initial chunk creation and distribution for an empty or non-existing collection based on the defined zones and zone ranges for the collection. Value can be one of the following:

  • true - to perform initial chunk creation and distribution
  • false - to not perform initial chunk creation and distribution (default)

Default value is false. This is only available for Atlas clusters with MongoDB v4.4 and later.

curl -X GET -i --digest --user "{PUBLIC-KEY}:{PRIVATE-KEY}" "https://cloud.mongodb.com/api/atlas/v1.0/groups/6c391af480eef519ea5deeb1/clusters/Cluster1/globalWrites?pretty=true"
{
"customZoneMapping" : {
"AF" : "5b48f5a780eef5236f689f94",
"AL" : "5b48f5a780eef5236f689f94",
"AU" : "5b48f5cddff5220000f7f375",
"AU-ACT" : "5b48f5cddff5220000f7f375",
"AU-NSW" : "5b48f5cddff5220000f7f375",
"AU-NT" : "5b48f5cddff5220000f7f375",
"AU-QLD" : "5b48f5cddff5220000f7f375",
"AU-SA" : "5b48f5cddff5220000f7f375",
"AU-TAS" : "5b48f5cddff5220000f7f375",
"AU-VIC" : "5b48f5cddff5220000f7f375",
"AU-WA" : "5b48f5cddff5220000f7f375",
"DZ" : "5b48f5a780eef5236f689f94"
},
"managedNamespaces" : [ {
"collection" : "zips",
"customShardKey" : "city",
"db" : "mydata",
"isCustomShardKeyHashed": false,
"isShardKeyUnique": false,
"numInitialChunks": null,
"presplitHashedZones": false
},{
"collection" : "stores",
"customShardKey" : "store_number",
"db" : "mydata",
"isCustomShardKeyHashed": false,
"isShardKeyUnique": false,
"numInitialChunks": null,
"presplitHashedZones": false
} ]
}
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