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Why Is CPU Usage of a DCS Redis Instance 100%? Symptom The CPU usage of a Redis instance increases dramatically within a short period of time. If the CPU usage is too high, connections may time out, and master/standby switchover may be triggered. Possible Causes The service QPS is
Can I Change the VPC and Subnet for a DCS Redis Instance? No. Once an instance is created, its VPC and subnet cannot be changed. To use a different set of VPC and subnet, create another instance with a desired set of VPC and subnet and then migrate data as required. For details about
Do DCS Redis Instances Limit the Size of a Key or Value? The maximum allowed size of a key is 512 MB. To reduce memory usage and facilitate key query, ensure that each key does not exceed 1 KB. The maximum allowed size of a string is 512 MB. The maximum allowed size of a Set, List
Can I Modify the Connection Addresses for Accessing a DCS Instance? After a DCS instance is created, its IP address and domain name for intra-VPC access cannot be modified. If public access has been enabled for the instance, the elastic IP address (EIP) bound to the instance can be
Why Do I Fail to Modify the Specifications for a DCS Instance? Check whether other tasks are running. Specifications of a DCS instance cannot be modified if another task of the instance is still running. For example, you cannot delete or scale up an instance while it is being restarted
Why Do I Fail to Create a DCS Redis Instance? The subnet does not have sufficient IP addresses. Analysis: Each node in a DCS instance must be assigned an IP address. Therefore, a single-node instance requires one IP address, a master/standby instance requires two IP addresses, and
Can I Dump DCS Memcached Instance Data for Analysis? No. Parent topic: Memcached Usage
Can I Modify Configuration Parameters of DCS Memcached Instances? Parameter configuration is allowed only when DCS instances are in the Running state. For details, see Modifying Configuration Parameters. Parent topic: Memcached Usage
Can I Customize or Change the Port for Accessing a DCS Instance? You cannot customize or change the port for accessing a DCS Redis 3.0, 6.0 enterprise, or Memcached instance. You can customize and change the port for accessing a DCS Redis 4.0, 5.0, 6.0, or 7.0 basic instance. Redis
How Do I View the Version of a DCS Redis Instance? Connect to the instance and run the INFO command. Figure 1 Querying instance information Parent topic: Instance Types/Versions
How Do I Export DCS Redis Instance Data? Instance data of DCS instances other than single-node ones can be exported on the console: Go to the Cache Manager page on the DCS console. Click the name of the desired instance. The instance details page is displayed. Choose Backups & Restorations
Does DCS for Redis Support Read/Write Splitting? The following table describes DCS's support for read/write splitting. Instance Type Read/Write Splitting Read/write splitting Supported. NOTE: To implement read/write splitting without client configurations, use read/write splitting
ECC Error Occurs in the Log, Causing Training Job Failure Symptom The following error occurs during the running of the training job log: RuntimeError: CUDA error: uncorrectable ECC error encountered Possible Cause ECC errors Solution If there are more than 64 ECC errors, the system
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
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
Can Multiple ECSs Connect to the Same RDS for MariaDB 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
This course introduces knowledge about GaussDB backup and restoration, including how the functions work and how to configure automated backup policies, back up data, and restore instances. It also provides the troubleshooting procedures and cases.
This course covers how to upgrade GaussDB, the principles involved, various upgrade features, and how to locate faults.
This course introduces the GaussDB database scaling principles, performance metrics, specifications constraints, and precautions and also describes how to scale a GaussDB database step by step.
