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Why Does My ECS Running CentOS 7 Fail to Obtain an IP Address Using dhclient? Symptom After an ECS was started, it failed to obtain an IP address because dhclient did not run. Possible Cause The possible causes are as follows: NetworkManager is not configured to start at boot. The
How Can I Resolve ECS Login Failures Due to Corrupt /etc/passwd? Scenarios This section describes how to handle login failures caused by corrupt /etc/passwd on a Linux ECS. The emergency recovery solution in this section requires you to replace the corrupt /etc/passwd with the initial
What Can I Do If the ECS Startup or Remote Login Fails Due to Incorrect System Configurations? Symptom Linux ECSs cannot be started or logged in to due to incorrect configurations. When you cannot log in to a Linux ECS using SSH or VNC, you can use a common method to modify the incorrect
Codec Exception Occurs After a Plug-In Package Developed Offline That Has Been Checked Is Uploaded to the IoT Platform This fault is caused by the plug-in code. Generally, the dependency is not introduced or the code logic is incorrect. You can rectify the fault based on the Java
What Should I Do If the ECS and DDS Are Deployed in Different VPCs and They Cannot Communicate with Each Other? Change the VPC hosting the ECS to the same as that hosting the DDS by referring to Changing a VPC. Create a VPC peering connection. For details, see VPC Peering Connection
Can I Migrate Data from a Multi-DB Source Redis Instance to a Cluster DCS Redis Instance? A total of 256 DBs (DB 0 to DB 255) can be configured for a single-node, read/write splitting, or master/standby DCS instance. If the target is a Redis Cluster instance (a Redis Cluster instance
What Should I Do If I Cannot Create Connections for a VPN Gateway That Has No Bandwidth Information? If a VPN gateway has no bandwidth information, the VPN is of the earlier edition. This type of VPN cannot be created on the cloud anymore. Only one VPN connection can be created for
What Should I Do If I Cannot Create Connections for a VPN Gateway That Has No Bandwidth Information? If a VPN gateway has no bandwidth information, the VPN is of the earlier edition. This type of VPN cannot be created on the cloud anymore. Only one VPN connection can be created for
What Should I Do If I Can't Connect to My ECS (PostgreSQL) Instance? Error message: Connection refused (Connection refused). Error cause: The port number of the self-built database is incorrect, or the network is disconnected. Solution: Ensure that the port number of the self-built
What Should I Do If I Can't Connect to My ECS (MySQL) Instance? Error message: Access denied for user 'user_name'@'100.xxx.xx.xx' (using password: YES) Error cause: The username or password of the ECS-hosted database is incorrect. Solution: Check whether the username and password
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
Can I Change the Specifications Defined by a Private Image When I Use the Image to Create an ECS? Yes. You can specify the CPU, memory, bandwidth, system and data disks of the ECS you are creating. The system disk must be smaller than 1,024 GB but no less than the system disk capacity
Is There Any Difference Between the Image Created from a CSBS/CBR Backup and That Created from an ECS? No. You can create a full-ECS image from an ECS, a CSBS backup, or a CBR backup. When you create a full-ECS image from an ECS, the system first creates a backup for the ECS and then
Why Is a Message Indicating that the Video Has Been Deleted Displayed When I Open a Recording File? After the meeting ends, the recording file needs to be parsed and transcoded. The time required for parsing and transcoding is estimated to be the same as the recording duration. Open
Do Equipment Room Personnel Has the Super Administrator Role to Steal Information by Using a Privileged UKey? UKeys are owned only by users who purchased Dedicated HSM instances. Equipment room personnel do not have the super administrator role. Sensitive data (keys) is stored in
What Should I Do If an ECS Cannot Connect to an RDS for PostgreSQL Instance Through a Private Network? Perform the following steps to identify the problem: Check whether the ECS and RDS for PostgreSQL instance are located in the same VPC. If they are in the same VPC, go to 2. If they
What Should I Do If an ECS Cannot Connect to an RDS for MariaDB Instance over a Private Network? Perform the following steps to identify the problem: Check whether the ECS and RDS for MariaDB instance are located in the same VPC. If they are in the same VPC, go to 2. If they are in
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
SMS.0515 Migration Failed. Source Disk Information Has Changed. Delete Target Server Configuration and Restart the Agent Symptom When you started the migration, you got the error message "SMS.0515 Migration failed. Source disk information has changed. Delete target server configuration
Why Does Login Fail When an Account That Has Mobile OTP Application Bound Is Used to Log In? Symptom When you log in to a CBH system using an account bound with a mobile OTP, the message "You cannot log in to the system using the mobile token. Try other login methods" is displayed
