Step 1: Create a DB Instance¶
Scenarios¶
You can create DB instances using the RDS console or APIs. For details about how to create DB instances using APIs, see the "Creating a DB Instance" section in the Relational Database Service API Reference. This section describes how to create a DB instance on the RDS console.
The DB instance class and storage space you need depend on your processing power and memory requirements.
Procedure¶
Log in to the management console.
Click in the upper left corner and select a region and a project.
Click Service List. Under Database, click Relational Database Service. The RDS console is displayed.
On the Instances page, click Create DB Instance.
On the displayed page, configure information about your DB instance. Then, click Create Now.
¶ Parameter
Description
Region
The region where your RDS resources will be located. You can change it on the creation page, or go back to the Instances page and change it in the upper left corner.
Note
Products in different regions cannot communicate with each other through a private network and you cannot change the region of a DB instance after creating the instance. Therefore, exercise caution when selecting a region.
DB Instance Name
Must start with a letter and consist of 4 to 64 characters. Only letters, digits, hyphens (-), and underscores (_) are allowed.
DB Engine
Set to Microsoft SQL Server.
DB Engine Version
For details, see DB Engines and Versions.
Different DB engine versions are supported in different regions.
You are advised to select the latest available version because it is more stable, reliable, and secure.
DB Instance Type
Primary/Standby: uses an HA architecture with a primary DB instance and a synchronous standby DB instance. It is suitable for production databases of large- and medium-sized enterprises in Internet, Internet of Things (IoT), retail e-commerce sales, logistics, gaming, and other sectors. The standby DB instance improves instance reliability and is invisible to you after being created.
An AZ is a physical region where resources use independent power supply and networks. AZs are physically isolated but interconnected through an internal network.
You can deploy primary and standby DB instances in a single AZ or across AZs to achieve failover and high availability.
Single: uses a single-node architecture, which is more cost-effective than primary/standby DB instances. It is suitable for development and testing of microsites, and small- and medium-sized enterprises, or for learning about RDS.
Time Zone
Select your time zone when you are creating a DB instance. After the DB instance is created, the time zone cannot be modified.
Server Collation
Defines a collation of a database or table column, or a collation cast operation when applied to character string expression. It acts as the default collation for the DB instance.
Note
The SQL_Latin1_General_CP850_BIN2 collation is supported.
¶ Parameter
Description
Instance Class
Refers to the CPU and memory of a DB instance. Different instance classes have different numbers of database connections and different maximum IOPS.
For details about instance classes, see DB Instance Classes.
After a DB instance is created, you can change its CPU and memory. For details, see Changing a DB Instance Class.
Storage Type
Determines the DB instance read/write speed. The higher the maximum throughput is, the higher the DB instance read/write speed can be.
Common I/O: uses the SATA disk type that supports a maximum throughput of 90 MB/s.
Extreme SSD: uses 25GE network and RDMA technologies to provide you with up to 1,000 MB/s throughput per disk and sub-millisecond latency.
Ultra-high I/O: uses the SSD disk type that supports a maximum throughput of 350 MB/s.
Storage Space (GB)
Contains the file system overhead required for inode, reserved block, and database operation. Storage space can range in size from 40 GB to 4,000 GB and can be scaled up only by a multiple of 10 GB.
After a DB instance is created, you can scale up its storage space. For details, see section Scaling up Storage Space.
Disk Encryption
Disable: indicates the encryption function is disabled.
Enable: indicates the encryption function is enabled, improving data security but affecting system performance.
Key Name: indicates the tenant key. You can create or select a key.
Note
Once the DB instance is created, you cannot modify the disk encryption status or change the key. The backup data stored in OBS is not encrypted.
After an RDS DB instance is created, do not disable or delete the key that is being used. Otherwise, database will be unavailable.
For details about how to create a key, see the "Creating a CMK" section in the Key Management Service User Guide.
¶ Parameter
Description
VPC
A dedicated virtual network in which your RDS DB instances are located. A VPC can isolate networks for different services. You can select an existing VPC or create a VPC. For details on how to create a VPC, see the "Creating a VPC" section in the Virtual Private Cloud User Guide.
If no VPC is available, RDS allocates a VPC to you by default.
Important
NOTICE: After the DB instance is created, the VPC cannot be changed.
Subnet
Improves network security by providing dedicated network resources that are logically isolated from other networks. Subnets take effect only within an AZ. The Dynamic Host Configuration Protocol (DHCP) function is enabled by default for subnets in which you plan to create RDS DB instances and cannot be disabled.
A floating IP address is automatically assigned when you create a DB instance. You can also enter an unused floating IP address in the subnet CIDR block. After the DB instance is created, the floating IP address cannot be changed.
Security Group
Enhances security by controlling access to RDS from other services. You need to add inbound rules to a security group so that you can connect to your DB instance.
If no security group is available, RDS allocates a security group to you by default.
¶ Parameter
Description
Administrator
The default login name for the database is rdsuser.
Administrator Password
Must consist of 8 to 32 characters and contain at least three types of the following characters: uppercase letters, lowercase letters, digits, and special characters
~!@#$%^*-_+?,
. Enter a strong password and periodically change it for security reasons.If provided password will be considered by system as weak, you will receive an error and you should provide stronger password.
Keep this password secure. The system cannot retrieve it.
After a DB instance is created, you can reset this password. For details, see section Resetting the Administrator Password.
Confirm Password
Must be the same as Administrator Password.
Parameter Template
Contains engine configuration values that can be applied to one or more DB instances. If you intend to create primary/standby DB instances, they use the same parameter template.
Important
NOTICE: If you use a custom parameter template when creating a DB instance, the specification-related parameter max server memory (MB) in the custom template is not delivered. Instead, the default value is used.
You can modify the instance parameters as required after the DB instance is created. For details, see Modifying Parameters.
¶ Parameter
Description
Tag
Tags an RDS DB instance. This configuration is optional. Adding tags to RDS DB instances helps you better identify and manage the DB instances. A maximum of 20 tags can be added for each DB instance.
After a DB instance is created, you can view its tag details on the Tags page. For details, see section Managing Tags.
¶ Parameter
Description
Quantity
RDS supports DB instance creation in batches. If you choose to create primary/standby DB instances and set Quantity to 1, a primary DB instance and a standby DB instance will be created synchronously.
If you create multiple DB instances at a time, they will be named with four digits appended to the DB instance name. For example, if you enter instance, the first instance will be named instance-0001, the second instance-0002, and so on.
After the configuration, click Price Calculator to view the RDS configuration fee.
Note
The performance of your DB instance depends on its configurations. Hardware configuration items include the instance specifications, storage type, and storage space.
Confirm the specifications.
If you need to modify your settings, click Previous.
If you do not need to modify your settings, click Submit.
To view and manage the DB instance, go to the Instances page.
During the creation process, the DB instance status is Creating. When the creation process is complete, the instance status will change to Available.
The automated backup policy is enabled by default. An automated full backup is immediately triggered after a DB instance is created.
The default database port number is 1433. After a DB instance is created, you can change its port number.
For details, see Changing a Database Port.