Understanding Amazon DocumentDB Amazon Resource Names (ARNs)

Resources that you create in Amazon are each uniquely identified with an Amazon Resource Name (ARN). For certain Amazon DocumentDB (with MongoDB compatibility) operations, you must uniquely identify an Amazon DocumentDB resource by specifying its ARN. For example, when you add a tag to a resource, you must provide the resource's ARN.

Constructing an ARN for an Amazon DocumentDB Resource

You can construct an ARN for an Amazon DocumentDB resource using the following syntax. Amazon DocumentDB shares the format of Amazon Relational Database Service (Amazon RDS) ARNS. Amazon DocumentDB ARNs contain rds and not docdb.

arn:aws:rds:region:account_number:resource_type:resource_id

Region Name	Region	Availability Zones (compute)
US East (Ohio)	`us-east-2`	3
US East (N. Virginia)	`us-east-1`	6
US West (Oregon)	`us-west-2`	4
South America (São Paulo)	`sa-east-1`	3
Asia Pacific (Hong Kong)	`ap-east-1`	3
Asia Pacific (Hyderabad)	`ap-south-2`	3
Asia Pacific (Mumbai)	`ap-south-1`	3
Asia Pacific (Seoul)	`ap-northeast-2`	4
Asia Pacific (Singapore)	`ap-southeast-1`	3
Asia Pacific (Sydney)	`ap-southeast-2`	3
Asia Pacific (Tokyo)	`ap-northeast-1`	3
Canada (Central)	`ca-central-1`	3
China (Beijing) Region	`cn-north-1`	3
China (Ningxia)	`cn-northwest-1`	3
Europe (Frankfurt)	`eu-central-1`	3
Europe (Ireland)	`eu-west-1`	3
Europe (London)	`eu-west-2`	3
Europe (Milan)	`eu-south-1`	3
Europe (Paris)	`eu-west-3`	3
Middle East (UAE)	`me-central-1`	3
Amazon GovCloud (US-West)	`us-gov-west-1`	3
Amazon GovCloud (US-East)	`us-gov-east-1`	3

Note

The Amazon DocumentDB architecture separates storage and compute. For the storage layer, Amazon DocumentDB replicates six copies of your data across three Amazon Availability Zones (AZs). The AZs listed in the table above are the number of AZs that you can use in a given region to provision compute instances. As an example, if you are launching an Amazon DocumentDB cluster in ap-northeast-1, your storage will be replicated six ways across three AZs but your compute instances will only be available in two AZs.

The following table shows the format that you should use when constructing an ARN for a particular Amazon DocumentDB resource. Amazon DocumentDB shares the format of Amazon RDS ARNS. Amazon DocumentDB ARNs contain rds and not docdb.

Resource Type	ARN Format / Example
Instance (`db`)	`arn:aws:rds:region:account_number:db:resource_id` `arn:aws:rds:us-east-1:1234567890:db:sample-db-instance`
Cluster (`cluster`)	`arn:aws:rds:region:account_number:cluster:resource_id` `arn:aws:rds:us-east-1:1234567890:cluster:sample-db-cluster`
Cluster parameter group (`cluster-pg`)	`arn:aws:rds:region:account_number:cluster-pg:resource_id` `arn:aws:rds:us-east-1:1234567890:cluster-pg:sample-db-cluster-parameter-group`
Security group (`secgrp`)	`arn:aws:rds:region:account_number:secgrp:resource_id` `arn:aws:rds:us-east-1:1234567890:secgrp:sample-public-secgrp`
Cluster snapshot (`cluster-snapshot`)	`arn:aws:rds:region:account_number:cluster-snapshot:resource_id` `arn:aws:rds:us-east-1:1234567890:cluster-snapshot:sample-db-cluster-snapshot`
Subnet group (`subgrp`)	`arn:aws:rds:region:account_number:subgrp:resource_id` `arn:aws:rds:us-east-1:1234567890:subgrp:sample-subnet-10`

Finding an Amazon DocumentDB Resource ARN

You can find the ARN of an Amazon DocumentDB resource using the Amazon Web Services Management Console or the Amazon CLI.

Using the Amazon Web Services Management Console

To find an ARN using the console, navigate to the resource that you want an ARN for, and view the details for that resource.

For example, you can get the ARN for a cluster in the Details pane for the cluster, as shown in the following screenshot.

Console screenshot showing an ARN in the configurations and status section of the details pane.

Using the Amazon CLI

To get an ARN using the Amazon CLI for a particular Amazon DocumentDB resource, use the describe operation for that resource. The following table shows each Amazon CLI operation and the ARN property that is used with the operation to get an ARN.

Amazon CLI Command	ARN Property
`describe-db-instances`	`DBInstanceArn`
`describe-db-clusters`	`DBClusterArn`
`describe-db-parameter-groups`	`DBParameterGroupArn`
`describe-db-cluster-parameter-groups`	`DBClusterParameterGroupArn`
`describe-db-security-groups`	`DBSecurityGroupArn`
`describe-db-snapshots`	`DBSnapshotArn`
`describe-db-cluster-snapshots`	`DBClusterSnapshotArn`
`describe-db-subnet-groups`	`DBSubnetGroupArn`

Example - Finding the ARN for a cluster

The following Amazon CLI operation finds the ARN for the cluster sample-cluster.

For Linux, macOS, or Unix:


aws docdb describe-db-clusters \
    --db-cluster-identifier sample-cluster \
    --query 'DBClusters[*].DBClusterArn'

For Windows:


aws docdb describe-db-clusters ^
    --db-cluster-identifier sample-cluster \
    --query 'DBClusters[*].DBClusterArn'

Output from this operation looks something like the following (JSON format).


[
    "arn:aws:rds:us-east-1:123456789012:cluster:sample-cluster"
]

Example - Finding ARNs for multiple parameter groups

For Linux, macOS, or Unix:


aws docdb describe-db-cluster-parameter-groups \
   --query 'DBClusterParameterGroups[*].DBClusterParameterGroupArn'

For Windows:


aws docdb describe-db-cluster-parameter-groups ^
   --query 'DBClusterParameterGroups[*].DBClusterParameterGroupArn'

Output from this operation looks something like the following (JSON format).


[
    "arn:aws:rds:us-east-1:123456789012:cluster-pg:custom3-6-param-grp",
    "arn:aws:rds:us-east-1:123456789012:cluster-pg:default.aurora5.6",
    "arn:aws:rds:us-east-1:123456789012:cluster-pg:default.docdb3.6"
]

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