| Region |
The region where the cluster is deployed. The region cannot be changed after the cluster
is created.
Note Make sure that the PolarDB cluster is created in the same region as the Elastic Compute Service (ECS) instance
to which you want to connect. Otherwise, the cluster and the ECS instance can communicate
only over the Internet. As a result, the performance of the cluster may be compromised.
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| Creation Method |
The method used to create the PolarDB cluster.
- Create Primary Cluster: creates a PolarDB cluster.
- Restore from Recycle: creates a cluster by restoring a backup of a deleted cluster from the recycle bin.
- Source Version: the version of the deleted cluster that you want to restore.
- Deleted Clusters: the name of the deleted cluster that you want to restore.
- Backup History: the backup that you want to restore.
Note You can select other options to create databases of other engines.
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| Primary Availability Zone |
The primary zone where the cluster is deployed.
- Each zone is an independent geographical location in a region. All of the zones in
a region provide the same level of service performance.
- You can choose to create your PolarDB cluster in the same zone as an ECS instance or in a different zone from the zone
of the instance.
- You must specify only the primary zone. The system automatically selects a secondary
zone.
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| Network Type |
This parameter can be set only to VPC. You do not need to specify this parameter.
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| VPC VSwitch
|
Make sure that the PolarDB cluster is created in the same VPC as the ECS instance to which you want to connect.
Otherwise, the cluster and the ECS instance cannot communicate over the internal network
to achieve optimal performance.
- If you have an existing VPC that meets your network requirements, select the VPC.
For example, if you have an existing ECS instance and the VPC to which the ECS instance
belongs meets your network requirements, select this VPC.
- Otherwise, use the default VPC and the default vSwitch.
- Default VPC:
- Only one VPC is specified as the default VPC in the region that you select.
- The default VPC uses a 16-bit subnet mask. For example, the CIDR block 172.31.0.0/16
provides up to 65,536 private IP addresses.
- The default VPC does not count towards the quota of VPCs that you can create on Alibaba
Cloud.
- Default vSwitch:
- Only one vSwitch is specified as the default vSwitch in the zone that you select.
- The default VPC uses a 20-bit subnet mask. For example, the CIDR block 172.16.0.0/20
provides up to 4,096 private IP addresses.
- The default vSwitch does not count towards the quota of vSwitches that you can create
in a VPC.
- If the default VPC and vSwitch cannot meet your requirements, you can create your
own VPC and vSwitch. For more information, see Create and manage a VPC.
|
| Compatibility |
- MySQL 8.0: fully compatible with MySQL 8.0. MySQL 8.0 supports parallel queries. In specific
scenarios, the database performance increases by 10 times. For more information, see
Parallel query.
- MySQL 5.7: fully compatible with MySQL 5.7.
- MySQL 5.6: fully compatible with MySQL 5.6.
- PostgreSQL 11: fully compatible with PostgreSQL 11.
- Compatible with Oracle: highly compatible with Oracle. For more information, see Oracle compatibility.
Note PostgreSQL 11 and Compatible with Oracle are not supported in the following regions: China (Qingdao), US (Virginia), UK (London),
and Australia (Sydney).
|
| Edition |
By default, this parameter is set to Cluster .
|
| Node Specification |
Select node specifications based on your requirements. All nodes in the PolarDB cluster
are dedicated nodes with stable and reliable performance.
For more information about compute node specifications, see Specifications and pricing.
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| Nodes |
If the source cluster edition is Cluster , the system creates a primary node and a read-only node that have the same specifications.
In this case, you do not need to specify this parameter.
Note If the primary node fails, the system uses the read-only node as the primary node
and creates another read-only node. For more information about read-only nodes, see
Architecture.
|
| Storage Cost |
You do not need to specify this parameter. The system charges you on an hourly basis
based on the amount of storage that is consumed by your data. For more information,
see Specifications and pricing.
Note You do not need to specify the storage capacity when you create a cluster. The system
automatically scales storage resources based on data volume.
|
| Enable TDE |
Specify whether to enable Transparent Data Encryption (TDE). After TDE is enabled,
PolarDB encrypts the data files of your cluster. You do not need to modify the code to allow
access to your cluster. However, TDE reduces the performance of your cluster by 5%
to 10%.
Note TDE cannot be disabled after it is enabled.
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| Cluster Name |
Enter the name of the cluster. The name must meet the following requirements:
- The name cannot start with
http:// or https://.
- The name must be 2 to 256 characters in length.
If this parameter is left empty, the system automatically generates a cluster name.
You can change the cluster name after the cluster is created.
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| Resource Group |
Select a resource group from available resource groups. For more information, see
Create a resource group.
Note A resource group is a group of resources that belong to an Alibaba Cloud account.
Resource groups allow you to manage these resources in a centralized manner. A resource
belongs to only one resource group. For more information, see Use RAM to create and authorize resource groups.
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