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Why Does the System Display Error Code 0x1104 When I Log In to a Windows ECS? Symptom The system displays an error message indicating that a protocol error (code: 0x1104) is detected when you use MSTSC to access an ECS running Windows Server 2008. Figure 1 Protocol error (code: 0x1104
Why Does the System Display Error Code 122.112... When I Log In to a Windows ECS? Symptom The system displays error 122.112... when you use RDC to locally access an ECS running Windows Server 2012. The ECS is frequently disconnected and the Windows login process is unexpectedly interrupted
What Should I Do If NIC Flapping Occurs After My ECS Specifications Are Modified? Symptom Take a Linux ECS as an example. After the user modified ECS specifications and ran the ifconfig command, the user found that the original eth0 and eth1 NICs were changed to eth2 and eth3 NICs
How Can I Obtain the Mapping Between Disk Partitions and Disk Devices on a Windows ECS? This section uses an ECS running Windows Server 2019 64-bit as an example to describe how to obtain the mapping between disk partitions and disk devices. For KVM or QingTian instances, see How
Why Does the System Display Error Code 0x112f When I Log In to a Windows ECS? Symptom When you log in to a Windows ECS, the system displays error code 0x112f, as shown in Figure 1. Figure 1 Error message (code: 0x112f) Possible Causes The ECS memory is insufficient. Solution Method
How Can I Obtain the Mapping Between Disk Partitions and Disk Devices on a Linux ECS? For a Xen ECS running Linux, its disk partitions correspond to disk devices. This section uses a Linux ECS running Red Hat Enterprise Linux 7 as an example to describe how to obtain the mapping between
Why an Entry Is Automatically Added to /etc/hosts After a Linux ECS Is Restarted? Symptom After an ECS is restarted, an entry that maps its host name to 127.0.0.1 is automatically added to /etc/hosts. As a result, the host name fails to be resolved. Root Cause /etc/cloud/cloud.cfg
What Can I Do If the Buffer and Cache Occupy Too Much Memory of a Linux ECS? Symptom When querying the system memory usage using free after the Linux ECS runs for a long period, you have found that most of the memory is used by buffers and cache. Possible Cause In Linux memory management
Why Does It Takes a Long Time to Connect to an ECS Using SSH After UseDNS Is Enabled? Symptom It takes a long time to connect to an ECS using SSH. Possible Causes After the UseDNS option is enabled for the sshd service on the SSH server, when a client attempts to connect to the server
What Can I Do If the Permissions on the Root Directory of My CentOS ECS Changed to 777? Symptom You executed the chmod -R 777 / command on your ECS running CentOS, and the permissions on the root directory were changed to 777. As a result, most services were unavailable and most commands
How Do I Change the Login Mode of a Linux ECS from Key Pair to Password? Scenarios This section describes how to change the login mode of a Linux ECS from key pair to password. Procedure Use the key to log in to the Linux ECS and set the password of user root. sudo passwd root If
How Do I Troubleshoot Blue Screen or Black Screen Errors After an ECS Is Started? Symptom When you are remotely logging in to an ECS, a screen that's black or blue is displayed. Root Cause The blue screen or black screen errors are caused by explorer.exe errors in Windows. explorer.exe
Why Does BSOD Occur When I Log In to an ECS Using Remote Desktop Connection? Symptom When you attempt to use a remote desktop connection to log in to an ECS running Windows Server 2012 R2 from a local computer with redirected drive enabled, blue screen of death (BSOD) occurs. Root
What Can I Do If My Windows ECS Can Ping a Website but Cannot Access it? Symptom Your Windows ECS cannot access websites or applications after running for a long time. You can remotely log in to the ECS and ping websites using the ECS, but it failed to access websites or applications
Why Does an ECS Fail to Be Remotely Connected Using RDP and Internal Error Code 4 Is Displayed? Symptom An internal error is displayed when you log in to a Windows ECS and you fail to connect to the ECS remotely. Generally, this problem occurs because the Remote Desktop Services is
What Should I Do If I Cannot View Data After Logging In to an ECS Using VNC? After you log in to an ECS using VNC and view data, for example, play videos or run the cat command to view large files in Linux OSs, VNC may become unavailable due to the high memory usage of the browser
What Should I Do If Executing a Driver Installation Script Failed on an ECS Running CentOS 5? Scenarios After executing the script for installing the Virtio driver on an ECS running CentOS 5, users cannot determine whether the driver has been successfully installed. This section describes
How Can I Use SCP to Transfer Files Between a Local Linux Computer and a Linux ECS? Scenarios You want to use SCP to transfer files between a local Linux computer and a Linux ECS. Procedure Log in to the management console. On the Elastic Cloud Server page, obtain the EIP bound to
How Can I Rectify the Fault That May Occur on a Linux ECS with an NVMe SSD Disk Attached? Symptom When a Linux ECS with an NVMe SSD disk attached, such as a P1 ECS, becomes faulty, you must contact the administrator to remotely rebuild the ECS again. If automatic NVMe SSD disk attachment
Why Are Disk Error Logs Printed After a Disk Attached to an ECS Is Formatted with the ext4 File System? Symptom When a VBD disk is attached to an ECS and the partition is in ext4 format, the following log may be displayed on the console: blk_update_request: operation not supported