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Commands Supported and Disabled by DCS for Redis 3.0 (Discontinued) DCS for Redis 3.0 is developed based on Redis 3.0.7 and is compatible with open-source protocols and commands. This section describes DCS for Redis 3.0's compatibility with Redis commands, including supported commands
Can Multiple ECSs Connect to the Same RDS DB Instance? Multiple ECSs can connect to the same RDS DB instance as long as the capability limits of a database are not exceeded. Parent Topic: Product Consulting
Why Is Available Memory of Unused DCS Instances Less Than Total Memory and Why Is Memory Usage of Unused DCS Instances Greater Than Zero? For DCS Redis 3.0 instances and Memcached instances, the available memory is less than the total memory because some memory is reserved for system
What Can I Do If I Fail to Purchase a BCS Instance? General Checks Detailed Checks Parent topic: Instance Management
Can I Use ECSs to Create a Dedicated Resource Pool for ModelArts? No. This operation is not allowed. When creating a resource pool, you can only select available node flavors provided on the console. These node flavors in dedicated resource pools are from ECSs. However, the ECSs purchased
Returning the Real IP Addresses of a Client to DCS (IP Pass-through) When a client of a DCS Redis 4.0 or later instance connects to the server through a VPC endpoint, the source IP address displayed on the server belongs to the VPC endpoint (starting with 198.19), and it is not the
Will I Be Charged for the EIP Used for Public Access to a DCS Redis Instance? Yes. You must pay for the EIP used for public access to a DCS Redis 3.0 instance. Before enabling public access, you must have an available EIP. For the billing details, see the EIP pricing details. Parent
Why Does It Take a Long Time to Start a Cluster DCS Instance? Possible cause: When a cluster instance is started, status and data are synchronized between the nodes of the instance. If a large amount of data is continuously written into the instance before the synchronization is complete
Is All Data in a DCS Redis Instance Migrated During Online Migration? Migration among multi-DB single-node, read/write splitting, or master/standby instances involves the full set of data. After the migration, a given key will remain in the same DB as it was before the migration.
What Policies Does DCS for Memcached Use to Deal with Expired Data? DCS for Memcached allows you to set the expiration time for stored data based on service requirements. For example, you can set the expire time when performing the add operation. By default, data is not evicted from
Does DCS Support External Extensions, Plug-ins, or Modules? No. DCS for Redis does not support external extensions, plug-ins, or modules. There is no plan for supporting modules. Parent topic: Redis Usage
Why Can't an IAM User See a New DCS Redis Instance? Symptom An IAM user cannot see a newly created DCS Redis instance. Possible Cause The IAM user does not have permissions for the enterprise project to which the new instance belongs. Solution Log in to the DCS console. In the upper
Can I Migrate Data Between DCS Memcached and Redis Instances? No. Memcached and Redis are different cache databases and do not support data migration between each other. Parent topic: Data Backup, Export, and Migration
Can I Obtain the Addresses of the Nodes in a Cluster DCS Redis Instance? Cluster DCS Redis 3.0 instances (Proxy Cluster type) are used in the same way that you use single-node or master/standby instances. You do not need to know the backend node addresses. For a cluster DCS Redis
Which Ports of a Security Group Are Opened When I Create a BCS Instance? Currently, port 22 for SSH login and ports ranging from 30000 to 40000 are opened for BCS. Parent topic: Service Usage
What Should I Do If My BCS Instance Remains in the Creating State? The possible cause is that the disk fails to be mounted. Solution Log in to the node in the Cloud Container Engine (CCE) cluster where the BCS instance is deployed, and run the following command to check the DNS address
How Do I Unsubscribe from a Yearly/Monthly BCS Instance? Choose More > Unsubscribe on the instance card. After the unsubscription application is approved, the remaining fees paid for the instance will be refunded. Parent topic: Billing FAQs
[Notice] Adjustment on the EOS Date of Huawei Cloud RDS for MySQL 5.7 Release Date This notice is released on March 27, 2025. EOS Date Adjustment Huawei Cloud adjusted the end-of-service (EOS) date of RDS for MySQL 5.7 to October 31, 2028. Scope All regions Impact You have more time
What Should I Do If Access to DCS Fails After Server Disconnects? Analysis: If persistent connections ("pconnect" in Redis terminology) or connection pooling is used and connections are closed after being used for connecting to DCS instances, errors will be returned at attempts to
Why Is Public Access of My DCS Redis 3.0 Instance Unintentionally Disabled? Symptom: Public access has been enabled for a DCS Redis 3.0 instance but is suddenly disabled. Possible cause: The EIP bound to the DCS Redis instance is unbound. As a result, public access is automatically
