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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
Why Do I Fail to Connect to a Linux ECS Using WinSCP? Symptom Connecting to a Linux ECS using WinSCP fails, while using SSH tools like Xshell succeeds. Figure 1 Connection error using WinSCP Root Cause If you can connect to a Linux ECS using SSH tools, the SSH tools run properly.
Why Does a Linux ECS with a SCSI Disk Attached Fails to Be Restarted? Symptom For a Linux ECS with a SCSI disk attached, if you have enabled automatic SCSI disk attachment upon ECS startup in /etc/fstab and the disk drive letter (for example, /dev/sdb) is used, the ECS fails to restart
How Can I Obtain the Key Pair Used by My ECS? Symptom You have created multiple key pairs, and you are trying to find the key pair to log in to the target ECS. Procedure Log in to the management console. Click in the upper left corner and select your region and project. Under Compute
How Can I View and Modify Kernel Parameters of a Linux ECS? This document describes common Linux kernel parameters and how to view and modify them. Modify the kernel parameters only if the parameter settings affect your services. If the parameter settings must be modified, perform
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
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
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 Do I Restore Data in the Event of a Startup Failure on a Windows ECS? Symptom If logging in to a Windows ECS failed, the system automatically starts the recovery option. However, an error is reported after the recovery option is selected, and the system recovery cannot continue
How Do I Troubleshoot Slow Connections to a Website Hosted on My ECS? Symptom A complete HTTP request includes domain name resolution, TCP connection establishment, request initiation, processing of the request and returning a processing result by the server, parsing of the HTML code
What Should I Do If the IP Settings of My Linux ECS Are Lost? Symptom When an ECS has been running continuously for a long time without being restarted, the IP address settings may be lost, ECSs may be disconnected, or the network may break down. Figure 1 Symptom Possible Causes The
Why Can't I Open the Start Menu and Search Box on a Windows ECS? Symptom You can log in to the newly created Windows ECS, but the system does not respond when you click Start menu button and the search box. Possible Causes The AppX Deployment Service (AppXSVC) uses too many system
Why Does the NIC Names Change After I Start a Linux ECS? Scenarios After an ECS running CentOS 6 created using a private image starts, the first NIC is named as eth1, rather than eth0. This solution provided in this section involves restarting the ECS. Restarting the ECS will interrupt
How Do I Attach an Extension NIC to a Windows ECS for Accessing the Internet? Scenarios A Windows ECS has one primary NIC and one extension NIC attached. Both the NICs have an EIP bound to access the Internet. Constraints Do not modify the primary NIC settings. Procedure Log in to
Why Is the Space Not Released After I Delete a Large File on a Linux ECS? Symptom The space usage of the root directory on a Linux ECS is too high, for example, 96%, as shown in Figure 1. Figure 1 Too high space usage of the root directory You find that the access_log file generated
How Do I Apply for a License for Authenticating Multi-User Sessions and Activate an ECS? Scenarios This section describes how to configure remote desktop services and activate an ECS. The ECS running Windows Server 2012 is used as an example. Procedure Applying for a License for Authenticating
Why Can't I Use the Local Computer to Connect to My Windows ECS? Symptom An error message is displayed indicating that your local computer cannot connect to the remote computer. Figure 1 Cannot connect to the remote computer Possible Causes Port 3389 of the security group on the ECS
Why Cannot the EIP Bound to the Extension NIC of My ECS Access the Internet? Symptom Your ECS has one primary NIC and one extension NIC in the same subnet. Both the NICs have an EIP bound to access the Internet. The EIP bound to the primary NIC can access the Internet, but that bound
How Can I Transfer Data Between a Local Computer and a Windows ECS? Method 1: Install a Data Transfer Tool Install a data transfer tool, such as FileZilla on both the local computer and the Windows ECS to transmit data. Method 2: Configure Local Disk Mapping Use MSTSC to transfer
