**Example 1: To create a MySQL 5.7--compatible DB cluster** The following ``create-db-cluster`` example creates a MySQL 5.7-compatible DB cluster using the default engine version. Replace the sample password ``secret99`` with a secure password. When you use the console to create a DB cluster, Amazon RDS automatically creates the writer DB instance for your DB cluster. However, when you use the AWS CLI to create a DB cluster, you must explicitly create the writer DB instance for your DB cluster using the ``create-db-instance`` AWS CLI command. :: aws rds create-db-cluster \ --db-cluster-identifier sample-cluster \ --engine aurora-mysql \ --engine-version 5.7 \ --master-username admin \ --master-user-password secret99 \ --db-subnet-group-name default \ --vpc-security-group-ids sg-0b9130572daf3dc16 Output:: { "DBCluster": { "DBSubnetGroup": "default", "VpcSecurityGroups": [ { "VpcSecurityGroupId": "sg-0b9130572daf3dc16", "Status": "active" } ], "AllocatedStorage": 1, "AssociatedRoles": [], "PreferredBackupWindow": "09:12-09:42", "ClusterCreateTime": "2023-02-27T23:21:33.048Z", "DeletionProtection": false, "IAMDatabaseAuthenticationEnabled": false, "ReadReplicaIdentifiers": [], "EngineMode": "provisioned", "Engine": "aurora-mysql", "StorageEncrypted": false, "MultiAZ": false, "PreferredMaintenanceWindow": "mon:04:31-mon:05:01", "HttpEndpointEnabled": false, "BackupRetentionPeriod": 1, "DbClusterResourceId": "cluster-ANPAJ4AE5446DAEXAMPLE", "DBClusterIdentifier": "sample-cluster", "AvailabilityZones": [ "us-east-1a", "us-east-1b", "us-east-1e" ], "MasterUsername": "master", "EngineVersion": "5.7.mysql_aurora.2.11.1", "DBClusterArn": "arn:aws:rds:us-east-1:123456789012:cluster:sample-cluster", "DBClusterMembers": [], "Port": 3306, "Status": "creating", "Endpoint": "sample-cluster.cluster-cnpexample.us-east-1.rds.amazonaws.com", "DBClusterParameterGroup": "default.aurora-mysql5.7", "HostedZoneId": "Z2R2ITUGPM61AM", "ReaderEndpoint": "sample-cluster.cluster-ro-cnpexample.us-east-1.rds.amazonaws.com", "CopyTagsToSnapshot": false } } **Example 2: To create a PostgreSQL--compatible DB cluster** The following ``create-db-cluster`` example creates a PostgreSQL-compatible DB cluster using the default engine version. Replace the example password ``secret99`` with a secure password. When you use the console to create a DB cluster, Amazon RDS automatically creates the writer DB instance for your DB cluster. However, when you use the AWS CLI to create a DB cluster, you must explicitly create the writer DB instance for your DB cluster using the ``create-db-instance`` AWS CLI command. :: aws rds create-db-cluster \ --db-cluster-identifier sample-pg-cluster \ --engine aurora-postgresql \ --master-username master \ --master-user-password secret99 \ --db-subnet-group-name default \ --vpc-security-group-ids sg-0b9130572daf3dc16 Output:: { "DBCluster": { "Endpoint": "sample-pg-cluster.cluster-cnpexample.us-east-1.rds.amazonaws.com", "HttpEndpointEnabled": false, "DBClusterMembers": [], "EngineMode": "provisioned", "CopyTagsToSnapshot": false, "HostedZoneId": "Z2R2ITUGPM61AM", "IAMDatabaseAuthenticationEnabled": false, "AllocatedStorage": 1, "VpcSecurityGroups": [ { "VpcSecurityGroupId": "sg-0b9130572daf3dc16", "Status": "active" } ], "DeletionProtection": false, "StorageEncrypted": false, "BackupRetentionPeriod": 1, "PreferredBackupWindow": "09:56-10:26", "ClusterCreateTime": "2023-02-27T23:26:08.371Z", "DBClusterParameterGroup": "default.aurora-postgresql13", "EngineVersion": "13.7", "Engine": "aurora-postgresql", "Status": "creating", "DBClusterIdentifier": "sample-pg-cluster", "MultiAZ": false, "Port": 5432, "DBClusterArn": "arn:aws:rds:us-east-1:123456789012:cluster:sample-pg-cluster", "AssociatedRoles": [], "DbClusterResourceId": "cluster-ANPAJ4AE5446DAEXAMPLE", "PreferredMaintenanceWindow": "wed:03:33-wed:04:03", "ReaderEndpoint": "sample-pg-cluster.cluster-ro-cnpexample.us-east-1.rds.amazonaws.com", "MasterUsername": "master", "AvailabilityZones": [ "us-east-1a", "us-east-1b", "us-east-1c" ], "ReadReplicaIdentifiers": [], "DBSubnetGroup": "default" } } For more information, see `Creating an Amazon Aurora DB cluster <https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/Aurora.CreateInstance.html>`__ in the *Amazon Aurora User Guide*.