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How Do I Reduce the Size of an Image Created Locally or on ECS? Choose a smaller image that fits your needs. For instance, if you are creating a PyTorch 2.1 + CUDA 12.2 image and cannot find an exact match from Huawei Cloud, avoid selecting an image with unrelated components (like
How Do I Mount a File System to a Linux ECS as a Non-root User Scenarios By default, a Linux ECS allows only the root user to use the mount command to mount file systems, but you can grant the permissions of user root to other users. Such users can then use the mount command to mount
What Should I Do If a SAP Application on an ECS Cannot Be Started? Symptom The /etc/hosts file contains "127.0.0.1 host name host name". As a result, the SAP application installed on the ECS cannot be started. You need to log in to the ECS where the SAP application is deployed to
What Should I Do If an ECS Can't Connect to a TaurusDB Instance? Perform the following steps to identify the problem: Check whether the ECS and TaurusDB instance are in the same VPC. If they are in the same VPC, go to 2. If they are in different VPCs, create an ECS in the VPC where
Why Is Sysprep Required for Creating a Private Image from a Windows ECS? Why Is Sysprep Required? Sysprep is used to generalize images. It removes server-specific information, like the security identifier (SID), from an image so that ECSs created from this image can have unique SIDs
How Do I Migrate an ECS to a Different Region of Another Account? You can perform the migration in either of the following ways: Use the ECS to create a private image, migrate the image to a different region of another account, and then use the image to create a new ECS. You can migrate
How Can I Access an ECS Using Its Host Name? The DNS service allows you to create private zones for any top-level domain names except .com. If you set the name of an ECS to ecs01, you can create a private zone for ecs01 and add an A record to map ecs01 to the private IP address of
Changing an ECS OS (Using an Image Without Cloud-Init Installed) Function This API is used to change the OS of an ECS. This API is an asynchronous API. After the OS change request is successfully delivered, a job ID is returned. This does not mean the OS change is complete. You need
Reinstalling an ECS OS (Using an Image Without Cloud-Init Installed) Function This API is used to reinstall an ECS OS. This API is an asynchronous API. After the OS reinstallation request is successfully delivered, a job ID is returned. This does not mean the reinstallation is complete
Unbinding a Virtual IP Address from an ECS NIC (Discarded) Function A virtual IP address provides another IP address for one or multiple ECS NICs, improving high availability between the ECSs. This API is used to unbind a virtual IP address from an ECS NIC. After the NIC is unbound
How Can I Back Up an RDS for PostgreSQL Database to an ECS? You can back up data to an ECS the same way you export SQL statements. The ECS service does not have restrictions on the types of data to be backed up as long as the data complies with local laws and regulations. You can
How Can I Back Up an RDS for MariaDB Database to an ECS? You can back up data to an ECS the same way you export SQL statements. The ECS service does not have restrictions on the types of data to be backed up as long as the data complies with local laws and regulations. You can store
How Do I View and Modify ECS Security Group Rules? To enable DAS to access the self-built DB instances on ECSs, you need to add an inbound rule with the port set to 3306 (example) and source to 100.125.0.0/16 and 100.79.0.0/16. On the ECS details page, click the Security Groups tab
Can I Select Another OS During ECS OS Reinstallation? No. You can only use the original image of the ECS to reinstall the OS. If you want to use a new OS image, change the OS. For details, see Changing the OS. Parent topic: OS Change
Should I Choose Windows OS or Linux OS for My ECS? Difference Between Windows OS and Linux OS The following table shows the difference between Windows OS and Linux OS. Select an OS based on your service requirements. Table 1 Differences OS Developer Language Database Windows ASP.NET
What Should I Do If the ECS Resources to Be Purchased Are Sold Out? When you are purchasing ECSs, the selected specifications may be sold out. In this case, the specifications cannot be purchased in the current region or AZ. Instance specifications vary in different regions and AZs
How Can I Obtain the Permission to Remotely Log In to a Windows ECS? Symptom When you connect a remote desktop to a Windows ECS, the system prompts that you need to be granted the right to sign in through Remote Desktop Services. Figure 1 Remote login right missing. Solution Open
How Can I Recover a Windows ECS with an Abnormal Virtualization Driver? Background An error occurs in the virtualization driver on a Windows ECS because of improper running of Tools. To ensure proper ECS running, handle this issue by following the instructions provided in this section
How Can I Install a GUI on an ECS Running CentOS 6? Scenarios To provide a pure system, the ECSs running CentOS 6 do not have a GUI installed by default. You can install a GUI on such ECSs as needed. Constraints Before installing a GUI on an ECS, ensure that the idle memory is greater
How Can I Install a GUI on an ECS Running CentOS 7? Scenarios You want to install a GUI on an ECS running CentOS 7 series. Constraints Before installing a GUI on an ECS, ensure that the idle memory is greater than or equal to 2 GB. Otherwise, the GUI installation may fail or the ECS