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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
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 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
Why Are Two deleteMetadata Traces Generated When I Buy an ECS in Pay-per-Use or Yearly/Monthly? During ECS creation, metadata is used to store temporary information. When the creation is finished, the information is automatically deleted. Thus, two traces named deleteMetadata are
What Should I Do If an Error Is Reported When I Switch Images for ECS Resources in Batches? Issue Description When switching image for batch ECS resources, "code":"Ecs.0021","message":"Failed to check Cinder quotas because the number of Gigabytes exceeded the upper limit." or CreateRootVolumeTask-fail
A Pipeline Cannot Be Executed and a Message Is Displayed, Indicating that Tenant Has Hit Its Maximum Concurrent Pipelines Symptom When a pipeline is executed, a system message is displayed, indicating that the tenant has hit its maximum concurrent pipelines. However, running pipelines
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 Use a VBS Backup to Restore an EVS Disk Whose Capacity Has Been Expanded? Yes. After restoration, the capacity of the expanded EVS disk goes back to the original capacity before expansion. If you want to use the capacity added to the disk, you need to attach the restored disk
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
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
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
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 an Xid Error Is Displayed in the Message Log When a GPU-accelerated ECS Is Faulty? Possible Causes XID Description 32 Invalid or corrupted push buffer stream 74 NVLINK Error, which indicates that the GPU hardware is faulty and needs to be brought offline for repair
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
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
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
How Do I Delete a Backup That Has Been Used to Create an Image While Retaining the Image? You can create an ECS using an image. Then create a new image from the ECS. Delete the original image and then delete the backup. For details, see section "Creating an Image from a Cloud Server
