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What Should I Do If Attaching a Disk to a Windows ECS Failed But There Are Still Available Device Names? Symptom On the Windows ECS details page, the system displays a message indicating that at most n more disks can be attached to the ECS. However, after you clicked Attach Disk,
How Can I Rectify the Fault That May Occur on a Linux ECS with an NVMe SSD Disk Attached? Symptom When a Linux ECS with an NVMe SSD disk attached, such as a P1 ECS, becomes faulty, you must contact the administrator to remotely rebuild the ECS again. If automatic NVMe SSD disk attachment
Why Are Disk Error Logs Printed After a Disk Attached to an ECS Is Formatted with the ext4 File System? Symptom When a VBD disk is attached to an ECS and the partition is in ext4 format, the following log may be displayed on the console: blk_update_request: operation not supported
What Should I Do If the One-Click Password Reset Plug-ins Installed on a Linux ECS Fail to Be Started? Scenarios The one-click password reset plug-ins installed on a Linux ECS fail to be started. Symptom When a user ran sudo sh setup.sh to install one-click password reset plug-ins
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
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
Will My Access Be Restricted by Bandwidth When I Connect to My Instance from an ECS over a Private Network? No. Parent topic: Database Connection
How Do I Revoke the Permission of a User If grant select on table t1 to public Has Been Executed on a Table Symptom Assume that there are two common users user1 and user2, and there are two tables t1 and t2 in the database. Run the following statement: 1 GRANT SELECT ON table t1 TO
Why Is the New Package Still Built from the Old Code Even After the Code Has Been Updated? Symptoms The local code is committed to a remote repository and the code in the remote repository has been updated. However, the code in the package generated after the build is decompressed
How Can I View Data on My Disk If Its Yearly/Monthly Server Has Expired? You can purchase a pay-per-use server in the same region and AZ of the disk, attach the disk to this server, and log in to the server to view the data on the disk. Do not initialize the disk. Or, the data on
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. Restarting the sshd service
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
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
Do I Need to Configure an EIP in an AS Configuration When a Load Balancer Has Been Enabled for an AS Group? No. If you have enabled a load balancer for an AS group, you do not have to configure an EIP in the AS configuration. The system automatically associates instances in the AS
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
Do I Need to Configure an EIP in an AS Configuration When a Load Balancer Has Been Enabled for an AS Group? No. If you have enabled a load balancer for an AS group, you do not have to configure an EIP in the AS configuration. The system automatically associates instances in the AS
Why Does HTTPS Access Fail When an HTTPS Certificate Has Been Configured for My Domain Name? Check whether the certificate matches your domain name. For example, a single-domain certificate push.yourdomain.com can match only the domain name push.yourdomain.com. A wildcard-domain certificate
Why Is the EVS Disk Size Not Updated in the BMS OS After the EVS Disk Capacity Has Been Expanded? If this occurs, scan block devices in the BMS OS. Take the sdh disk of Red Hat as an example, run the echo 1 > /sys/block/sdh/device/rescan command. Parent topic: Disk FAQ
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
How Do I Check Whether a Back-to-Origin IP Address Has Been Whitelisted on My Origin Server? Check servers and security devices to ensure that they have whitelisted the back-to-origin IP addresses and will not limit or block access traffic. For example: If your origin servers are
