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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
How Do I Troubleshoot an Unresponsive Website Hosted on My ECS? Symptom Websites running on an ECS might become unreachable for multiple reasons. Check whether the configurations of network, port, firewall, or security group of the ECS are correct. Fault Locating If an error is displayed
What Should I Do If Emails Configured on an ECS Cannot Be Sent? Solution For the emails sent using the browser: When you use a browser to log in to your mailbox, HTTP is used, and the default port number is 80. However, SMTP is used between email servers. If you use a browser to send
Why Does Login to My ECS Using the Reset Password Fail? Scenarios You cannot use the new password that you set to log in to the ECS. Ensure that the one-click password reset plug-in is not blocked by security software. Otherwise, the one-click password reset function is unavailable
Resetting the Password for Logging In to a Windows ECS Without the Password Reset Plug-in Installed Scenarios If the password reset plug-in is not installed on a Windows ECS or a password reset does not take effect, you can reset the password following the instructions provided in
Resetting the Password for Logging In to a Linux ECS Without the Password Reset Plug-in Installed Scenarios If the password reset plug-in is not installed on a Linux ECS or a password reset does not take effect, you can reset the password following the instructions provided in this
Why Is the ECS IP Address Released After the System Time Is Changed? Cause If the new ECS system time is later than the DHCP lease expiration time, the system will attempt to renew the DHCP lease. If the renewal fails, the IP address will be released. Solution If you need to set the
How Do I Access an ECS with an EIP Bound from the Internet? Each ECS is automatically added to a security group after being created to ensure its security. The security group denies access traffic from the Internet by default (except TCP traffic from port 22 through SSH to a Linux
How Do I Migrate an ECS from One Account to Another? To migrate an ECS from one account to another, perform the following operations: Install the Agent on the ECS under the original account, but when starting the Agent, enter the AK/SK pair of the destination account. To learn how
Elastic Cloud Servers (ECSs) help you build secure, flexible, and efficient applications for websites, e-commerce, graphics rendering, data analysis, and high-performance cloud computing.
How Do I Migrate ECS Data Across Regions Using CSBS? Context A user has an ECS with only one system disk in CN South-Guangzhou. To implement cross-region DR and fast service deployment in a different region, the user needs to create a same ECS with the same data in that region. In
Why Can't My ECS Access the Internet Even After an EIP Is Bound? Symptom An ECS with an EIP bound cannot access the Internet. Troubleshooting Checking Whether EIPs Are Blocked or Frozen Check whether the EIP is blocked. For details, see How Do I Unblock an EIP? Check whether the EIP
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
