FlexusRDS Overview

How to Use FlexusRDS

A web-based management console is provided for you to manage your FlexusRDS DB instances.

FlexusRDS supports MySQL 8.0 and 5.7. For details about how to buy a FlexusRDS DB instance, see Buying and Connecting to a FlexusRDS Instance.

For more information, see the official documentation at https://dev.mysql.com/doc/.

Basic Concepts

• DB Instance

  The smallest management unit of FlexusRDS is a DB instance. A DB instance is an isolated database environment on the cloud. You can create and manage FlexusRDS DB instances on the console.

• DB Engine

  FlexusRDS supports the MySQL DB engine.

• DB Instance Type
  FlexusRDS DB instances are classified into single instances and primary/standby instances.

  Table 1 DB instance types

  Type	Description	Notes
  Single	Uses a single-node architecture. It is less expensive than a primary/standby DB pair.	If a fault occurs on a single-node instance, the instance cannot recover in a timely manner.
  Primary/Standby	Uses an HA architecture. The primary and standby instances share the same IP address and can be deployed in different AZs.	When a primary instance is being created, a standby instance is provisioned synchronously to provide data redundancy. The standby instance is invisible to you after being created. If the primary instance fails, a failover occurs, during which database connection is interrupted. If there is a replication delay between the primary and standby instances, the failover takes an extended period of time. The client needs to be able to reconnect to the instance.

• Instance Class

  You can choose one of several database plans based on the vCPUs, memory, storage, and DB instance type you require. The following database plans are available:

  Table 2 Database plans

  Instance Class	DB Instance Type
  Standard 2U4G, 120 GB of storage	Single
  Standard 2U8G, 240 GB of storage	Single
  Standard 4U8G, 240 GB of storage	Single
  High-availability 2U4G, 120 GB of storage	Primary/Standby
  High-availability 2U8G, 240 GB of storage	Primary/Standby
  High-availability 4U8G, 240 GB of storage	Primary/Standby

• Automated Backup

  Automated backup is enabled by default when you create a FlexusRDS DB instance. The backup policy cannot be modified after instance creation.

• Manual Backup

  Manual backups are user-initiated full backups of DB instances. You can download and delete manual backup as needed. Or if you want, you can keep the manual backups until you unsubscribe from your instance.

Differences Between FlexusRDS and RDS for MySQL

Product Advantages

• Quick Setup

  You can create a FlexusRDS DB instance anytime you want to on the console. A FlexusRDS DB instance can be accessed from a FlexusX instance through a private network. This reduces the application response time and saves traffic fees.

• Solid Reliability

  FlexusRDS automatically backs up data every day and stores backups as packages in Object Storage Service (OBS). Automated backups are retained for seven days and can be used to restore data within that period.

  Point-in-time recovery (PITR) is supported. You can restore data to a new or original instance.

• Storage Autoscaling

  Storage autoscaling is disabled by default. You can enable it after purchasing a DB instance. With storage autoscaling enabled, FlexusRDS automatically scales up the storage of your instance when the storage usage reaches your preset limit. It works with Cloud Eye to monitor changes in database pressure and data volume.

• High Security

  FlexusRDS is protected by multiple layers of firewalls to defend against various malicious attacks, such as DDoS attacks and SQL injections.

• Simplified O&M

  With a web-based console, you can reboot DB instances, reset passwords, modify parameters, view error logs and slow query logs, and restore data. Instance metrics like CPU usage, IOPS, connections, and storage usage are monitored in real time, and an alarm is reported once any of the metrics becomes abnormal. You can always keep aware of your instance health.