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How Do I Disable Login to an ECS Using SSH Password? Scenarios To ensure ECS security, you need to change the access key of an ECS regularly, or disable the SSH password login. This section describes how to disable the SSH password authentication. After disabling SSH password login
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
Why Does the OS Fail to Respond When kdump Occurs on a Linux ECS? Symptom When kdump occurs on a Xen Linux ECS, the OS fails to respond and cannot be automatically recovered. For example, if you run the echo c>/proc/sysrq-trigger command to trigger kdump, this fault occurs. Figure
How Can I Transfer Files from a Local Mac to a Windows ECS? Scenarios This section describes how to use Microsoft Remote Desktop for Mac to transfer files from a local Mac to a Windows ECS. Prerequisites The remote access tool supported by Mac has been installed on the local Mac.
Why Is the Memory of an ECS Obtained by Running the free Command Inconsistent with the Actual Memory? Symptom After you create an ECS, you run the free -m command to view the ECS memory. The ECS memory is less than the memory configured during ECS creation. For example: When you are
Why Does the Login to My Linux ECS Using a Key File Fail? Symptom When you use the key file created during your Linux ECS creation to log in to the ECS, the login fails. Possible Causes Possible causes vary depending on the image used to create the Linux ECS. Cause 1: The image that
How Do I Query the Egress Public IP Address of My ECS? Scenarios After servers are migrated to the cloud, they usually use EIPs to access the Internet. You can log in to the management console and view the EIP bound to the ECS in the ECS list. For details, see Viewing ECS Details
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
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
Can I Migrate an ECS to Another Region, AZ, or Account? After an ECS is created, it cannot be directly migrated to another region, AZ, or account. To migrate an ECS across accounts or regions, create an image using the ECS and migrate the image to the target accounts or regions. For
How Can I Add ECSs Using Local Disks to an ECS Group? An ECS group logically isolates ECSs. ECSs in the same ECS group support anti-affinity and they are allocated on different hosts. You can add an ECS to an ECS group in either of the following ways: During purchase: When purchasing
What Do I Do If I Selected an Incorrect Image for My ECS? You can change the image for your ECS on the ECS console. Select the target ECS and click Stop in the upper left corner of the ECS list. Locate the row that contains the target ECS, choose More > Manage Image > Change OS in
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 eth0, rather than eth1. This solution provided in this section involves restarting the ECS. Restarting the ECS will interrupt
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
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
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
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
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
