Before you can use the features of ApsaraDB MyBase, you must create a dedicated cluster in ApsaraDB MyBase.
For more information about ApsaraDB MyBase for PostgreSQL, see Overview.
- Each dedicated cluster in ApsaraDB MyBase can be deployed in a single region.
- Each dedicated cluster in ApsaraDB MyBase can be deployed in a single virtual private cloud (VPC).
- When you perform the Create Dedicated Cluster operation, the overcommit metrics are set to the default values and cannot be modified.
You can modify the overcommit metrics after you create a dedicated cluster. For more
information, see Configure resource overcommitment to reduce costs. By default, the following overcommit metrics are configured for an ApsaraDB MyBase
for PostgreSQL dedicated cluster:
- CPU Overcommit Ratio: 200%
- Storage Overcommit Ratio: 100%
- Maximum Memory Usage: 100%
- Log on to the ApsaraDB MyBase console.
- In the upper-left corner of the page, select the region where you want to create a dedicated cluster.
- On the Clusters page, click Create Dedicated Cluster.
- In the Create Dedicated Cluster panel, configure the parameters described in the following table.
Parameter Description Engine
The database engine of the dedicated cluster. Select PostgreSQL.
Dedicated Cluster Name The name of the dedicated cluster. VPC The VPC where you want to create the dedicated cluster.Note
- If no options are available or if you need to create a VPC, log on to the VPC console.
- After a dedicated cluster is created, you cannot change the VPC. Proceed with caution.
Resource Allocation Policy The default policy that is used to allocate resources in the dedicated cluster. Valid values:
- Balanced Allocation: The system preferentially creates database instances on the hosts that have the smallest load. This maximizes system stability.
- Compact Allocation: The system preferentially creates database instances on the hosts that are created earlier than the other hosts and have fewer resources than the other hosts in the dedicated cluster. This maximizes resource utilization.
Grant OS Permissions Specifies whether to grant the host operating system (OS) permissions.Note If the host OS permissions are granted on a dedicated cluster that runs the SQL Server database engine, you can log on to the hosts in the dedicated cluster to perform operations such as uploads, downloads, and installation of software. After you create a dedicated cluster, you cannot change Grant OS Permissions. Proceed with caution.
- The first time you create a dedicated cluster in ApsaraDB MyBase, you must perform
The first time you create an ApsaraDB MyBase dedicated cluster, the following message appears in the lower part of the panel. You must grant permissions on elastic network interfaces (ENIs) and security groups of Elastic Compute Service (ECS). Click Authorize Now. On the Cloud Resource Access Authorization page, click Confirm Authorization Policy.Note After you grant permissions, the AliyunRDSDedicatedHostGroupRole role is displayed on the Roles page in the RAM console. If you want to use ApsaraDB MyBase dedicated clusters, retain this role. If this role is deleted, you must grant the permissions again to create a dedicated cluster.
- Click OK.