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Why Can't I Obtain the Password for Logging In to My Windows ECS Authenticated Using a Key Pair? Symptom A private key cannot be used to obtain the password for logging in to a Windows ECS that is authenticated using a key pair. Possible Causes The password fails to inject using Cloudbase-Init
How Can I Use WinSCP to Transfer Files from a Local Windows Computer to a Linux ECS? Scenarios WinSCP can be used to securely copy-paste files across local and remote computers. Compared with FTP, WinSCP allows you to use a username and password to access the destination server without
How Can I Use SFTP to Transfer Files Between a Local Linux Computer and a Linux ECS? Scenarios You want to use SFTP to transfer files between a local Linux computer and a Linux ECS. The following uses CentOS as an example. Procedure Log in to the ECS as user root. Run the following
What Should I Do If an ECS Error Occurs When I Create and Deploy a Component on a VM? Symptom The ECS service may be unavailable when you create and deploy a component on a ServiceStage VM. For example, calling the ECS interface times out during component deployment, and the following
Manually Configuring IPv4 and IPv6 Policy-based Routes for a Linux ECS with Multiple Network Interfaces (CentOS) Scenarios This section describes how to configure policy-based routes for a CentOS 8.0 64-bit ECS with two network interfaces. IPv4: If IPv4 communication between cloud
Manually Configuring IPv4 and IPv6 Policy-based Routes for a Linux ECS with Multiple Network Interfaces (Ubuntu) Scenarios This section describes how to configure policy-based routes for an Ubuntu 22.04 server 64-bit ECS with two network interfaces. IPv4: If IPv4 communication between
How Do I Change Default DNS Servers of an ECS to Huawei Cloud Private DNS Servers? Huawei Cloud provides private DNS servers for domain name resolution. ECSs use public domain names to access the Internet, but use private domain names to access cloud services like OBS and SMN, with
What Should I Do If an ECS Cannot Connect to an RDS DB Instance Through a Private Network? Perform the following steps to identify the problem: Check whether the ECS and RDS DB instances are located in the same VPC. If they are in the same VPC, go to 2. If they are in different VPCs
How Do I Handle the Startup Failure of a Windows ECS Created from a Windows Image Generalized by Sysprep? Symptom When you start the ECS, information similar to the following is displayed. Figure 1 Message displayed Then, the following information is displayed in the dialog box: Windows
What Do I Do If a Partition Is Not Found During the Startup of an ECS Created from an Imported Private Image? Cause Disk partition IDs are changed after the cross-platform image import. As a result, no partition can be found at startup. In this case, you need to change disk partition
Can I Use the System Disk Image of an ECS on a BMS After I Export It from the Cloud Platform? No. The system disk image of an ECS is a VM file that contains a system running environment and does not have an installation boot program. So, it cannot be used on a BMS. For how to create
How Can I Allow or Deny Login from Specific Users or IP Addresses to an ECS Using SSH? Scenarios This section describes how to allow or deny specific users or IP addresses to access an ECS using SSH. Constraints DenyHosts has been installed on the ECS. The sshd service should be restarted
Why Does My Linux ECS Fail to Access the Internet After Port 80 Is Allowed by the Firewall Rules? Symptom The Linux ECS cannot access the Internet after port 80 is allowed by the firewall rules. After the firewall is disabled, access to the Internet succeeds. Possible Causes The possible
What Can I Do If /etc/resolv.conf Is Restored After an ECS Running Ubuntu Is Restarted? Symptom After an ECS running Ubuntu or network-related services are restarted, the /etc/resolv.conf file is updated, and the nameserver field is restored to 127.0.0.53. Figure 1 Symptom Possible
Why Does the System Display a Message Indicating Invalid Credentials When I Attempt to Access a Windows ECS? Symptom When you use a local PC running Windows to access a Windows ECS using RDP (for example, MSTSC), the system displays a message indicating that the credentials are invalid
Why Do the Modifications to /etc/security/limits.conf Not Take Effect After the ECS Restarts? Symptom Modifications to the /etc/security/limits.conf file become invalid after the ECS restarts. Possible Causes In Linux, file /etc/security/limits.conf and directory /etc/security/limits.d
Why Does the System Display a Message Indicating Invalid Credentials When I Attempt to Access a Windows ECS? Symptom When you use a local PC running Windows to access a Windows ECS using RDP (for example, MSTSC), the system displays a message indicating that the credentials are invalid
How Can I Use FTP to Transfer Files from a Local Windows Computer to a Windows or Linux ECS? Scenarios You want to use FTP to transfer files from a local Windows computer to an ECS. Prerequisites An EIP has been bound to the ECS and access to TCP port 21 is allowed in the inbound
EdgeSec.00000019 Frozen Resources Cannot Be Migrated to or from an Enterprise Project (frozen cannot create eps tag) Root Cause Frozen resources cannot be added to or removed from an enterprise project. Troubleshooting Methods Check whether the resource is frozen. Procedure Log in
Do I Need to Install IPsec Software on Each Server That Needs to Access an ECS to Establish a VPN Connection? No. VPN connects two LANs. Multiple servers in the on-premises data center use the same public IP address to access the cloud. If you install IPsec software on the on-premises
