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**To modify an Amazon DocumentDB instance**
The following ``modify-db-instance`` example modifies the Amazon DocumentDB instance ``sample-cluster2`` by changing its instance class to ``db.r4.4xlarge`` and its promotion tier to ``5``. The changes are applied immediately but can only be seen after the instances status is available. ::
aws docdb modify-db-instance \
--db-instance-identifier sample-cluster2 \
--apply-immediately \
--db-instance-class db.r4.4xlarge \
--promotion-tier 5
Output::
{
"DBInstance": {
"EngineVersion": "3.6.0",
"StorageEncrypted": false,
"DBInstanceClass": "db.r4.large",
"PreferredMaintenanceWindow": "mon:08:39-mon:09:09",
"AutoMinorVersionUpgrade": true,
"VpcSecurityGroups": [
{
"VpcSecurityGroupId": "sg-77186e0d",
"Status": "active"
}
],
"PreferredBackupWindow": "18:00-18:30",
"EnabledCloudwatchLogsExports": [
"audit"
],
"AvailabilityZone": "us-west-2f",
"DBInstanceIdentifier": "sample-cluster2",
"InstanceCreateTime": "2019-03-15T20:36:06.338Z",
"Engine": "docdb",
"BackupRetentionPeriod": 7,
"DBSubnetGroup": {
"DBSubnetGroupName": "default",
"DBSubnetGroupDescription": "default",
"SubnetGroupStatus": "Complete",
"Subnets": [
{
"SubnetIdentifier": "subnet-4e26d263",
"SubnetAvailabilityZone": {
"Name": "us-west-2a"
},
"SubnetStatus": "Active"
},
{
"SubnetIdentifier": "subnet-afc329f4",
"SubnetAvailabilityZone": {
"Name": "us-west-2c"
},
"SubnetStatus": "Active"
},
{
"SubnetIdentifier": "subnet-53ab3636",
"SubnetAvailabilityZone": {
"Name": "us-west-2d"
},
"SubnetStatus": "Active"
},
{
"SubnetIdentifier": "subnet-991cb8d0",
"SubnetAvailabilityZone": {
"Name": "us-west-2b"
},
"SubnetStatus": "Active"
}
],
"VpcId": "vpc-91280df6"
},
"PromotionTier": 2,
"Endpoint": {
"Address": "sample-cluster2.corcjozrlsfc.us-west-2.docdb.amazonaws.com",
"HostedZoneId": "ZNKXH85TT8WVW",
"Port": 27017
},
"DbiResourceId": "db-A2GIKUV6KPOHITGGKI2NHVISZA",
"DBClusterIdentifier": "sample-cluster",
"DBInstanceArn": "arn:aws:rds:us-west-2:123456789012:db:sample-cluster2",
"PendingModifiedValues": {
"DBInstanceClass": "db.r4.4xlarge"
},
"PubliclyAccessible": false,
"DBInstanceStatus": "available"
}
}
For more information, see `Modifying an Amazon DocumentDB Instance <https://docs.aws.amazon.com/documentdb/latest/developerguide/db-instance-modify.html>`__ in the *Amazon DocumentDB Developer Guide*.
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