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Changing an ECS OS (Using an Image with Cloud-Init Installed) Function This API is used to change an ECS OS. During the system disk reinstallation using a new image, the data disks of the ECS remain unchanged. This API is an asynchronous API. After the OS change request is successfully
Resetting the Password for Logging In to an ECS with a Few Clicks (Discarded) Function This API is used to reset the password of the ECS management account, root or Administrator. This API has been discarded. Use the API described in Resetting the Password for Logging In to an ECS
ECS Management Through Console (OpenStack Nova API) Obtaining ECS Management Console Logs (Discarded) Obtaining a VNC-based Remote Login Address (Microversion 2.6 or Later) (Discarded) Parent topic: Out-of-Date APIs
Binding a Virtual IP Address to 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 bind a virtual IP address to an ECS NIC. If the specified IP address is
How Can I Enable Virtual Memory on a Windows ECS? Enabling ECS virtual memory will deteriorate I/O performance. If the ECS memory is insufficient, increase the memory by performing the operations in Modifying Individual ECS Specifications. If you really need to enable virtual memory
Can I Change the Region or AZ After an ECS Is Purchased? Sorry, you cannot change the region after the ECS is purchased. During the ECS purchase, you are advised to select the region nearest to your services for lower network latency and quick resource access. If you need to change
How Can I Install a GUI on an ECS Running Ubuntu? Scenarios To provide a pure system, the ECSs running Ubuntu do not have a GUI installed by default. You can install a GUI on such ECSs as needed. For GPU-accelerated ECSs, after installing a GUI, you need to configure X Server, x11vnc
Why Can I Remotely Access an ECS But Cannot Ping It? Symptom You can remotely access an ECS, but when you ping the EIP bound to the ECS, the ping operation fails. Possible Causes A desired inbound rule is not added for the security group, and ICMP is not enabled. Solution Log in to
Why Does a Disk Attached to a Windows ECS Go Offline? Symptom A disk attached to a Windows ECS goes offline, and the system displays the message "The disk is offline because of policy set by an administrator.", as shown in Figure 1. Figure 1 Offline disk Possible Causes Windows has
Why Accessing a Website Outside the Chinese Mainland Is Slow on an ECS? Symptom Websites outside the Chinese mainland, including those in Hong Kong (China), Macao (China), Taiwan (China), and other countries and regions, may be slow to access. Generally, an international line is used
Why Does Internet Access to an ECS Deployed with FTP Fail? Symptom You cannot access a Windows ECS with FTP deployed by using an EIP. The FTP client cannot access the FTP server, and the connection times out. It takes a lot of time to upload files. Possible Causes The security group
How Can I Configure the NTP and DNS Servers for an ECS? For Linux OSs Take the NTP and DNS servers running SUSE as an example. Configure the NTP server for the ECS. Log in to the Linux ECS. Run the following command to switch to user root: sudo su - Run the following command to edit
Why Did I Fail to Configure an Anti-Affinity ECS Group? When you configure an anti-affinity ECS group during ECS purchase, an error occurred. This may be caused by insufficient resources. In this case, you can try the following measures: Wait for a while and try again. Purchase ECSs
How Can I Enable SELinux on an ECS Running CentOS? Symptom SELinux is disabled on ECSs running CentOS 7.5 by default. After I enable SELinux by running /etc/selinux/config and enter the login password, the login failed. This section describes how to resolve this issue based on enabled
How Do I View the GPU Usage of a GPU-accelerated ECS? Symptom The GPU usage of GPU-accelerated ECSs running Windows Server 2012 and Windows Server 2016 cannot be viewed in Task Manager. This section provides two methods for you to view the GPU usage. One is to run a command in the
How Can I Install a GUI on an ECS Running Debian? Scenarios To provide a pure system, the ECSs running Debian do not have a GUI installed by default. You can install a GUI on such ECSs as needed. Constraints The operations described in this section apply to ECSs running Debian 8,
How Can I Change the Password for Logging In to a Linux ECS? Solution Use the existing key file to log in to the Linux ECS as user root. Run the following command to reset the password of user root: passwd To reset the password of another user, replace passwd with passwd username.
How Do I Change the CIDR Block of an ECS Subnet? Scenarios You want to change the CIDR block of an ECS subnet. After you create a subnet, you cannot directly change its CIDR block. To change a CIDR block, you need to change the subnet. Prerequisites The ECS has been stopped. Procedure
How Can I Obtain the MAC Address of My ECS? This section describes how to obtain the MAC address of an ECS. The MAC address of an ECS cannot be changed. Linux (CentOS 6) Log in to the Linux ECS. Run the following command to view the MAC address of the ECS: ifconfig Figure 1 Obtaining
Why Does My Linux ECS Fail to Access the Internet? Symptom Your attempt to access the Internet from your Linux ECS failed. Fault Locating The following fault causes are sequenced based on their occurrence probability. If the fault persists after you have ruled out a cause, check other
