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Creating a Read Replica

Scenarios

Read replicas are used to enhance the read capabilities and reduce read pressure on DB instances.

After a DB instance is created, you can create read replicas for it.

  • If you select the single AZ type, read replicas are deployed in the same AZ as the primary node.
  • If you select the multi-AZ type, read replicas are deployed in different AZs from the primary node to ensure high reliability.

A DB instance contains up to 15 read replicas.

Procedure

  1. Log in to the management console.
  2. Click in the upper left corner and select a region and a project.
  3. Click Service List. Under Database, click GaussDB.
  4. On the Instance Management page, locate the target DB instance and choose More > Create Read Replica in the Operation column.

    Alternatively, click the target DB instance. In the topology on the Basic Information page, click to create read replicas.

  5. On the displayed page, specify Failover Priority and Quantity. For yearly/monthly DB instances, click Buy Now. For pay-per-use DB instances, click Next.
  6. Select a payment method for yearly/monthly DB instances and complete the payment.
  7. After read replicas are created, you can manage them following the instructions provided in Managing a Read Replica.
Parent topic: Read Replicas