How to troubleshoot problems after the main program is interrupted abnormally or prompts that the migration is unsuccessful.

The content of this article is about how to troubleshoot problems after the main program is interrupted abnormally or the migration is unsuccessful. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

Troubleshooting

The cloud migration tool supports breakpoint recovery, and the file transfer process supports breakpoint resume transfer. Generally speaking, if the main program is interrupted abnormally or prompts that the migration is unsuccessful, after troubleshooting and solving the problem, you can run the main program again to resume the cloud migration work.

After successfully migrating Windows Server 2008 and above versions of Windows servers, after starting the instance, you need to use the Reset File Permission tool to repair the default file system permissions to ensure that the instance services and components are normal.

Log error message IllegalTimestamp

Please check whether the system time is the correct time.

Log error message UnKnownError

Please check whether the value of the parameter platform in the configuration file user_config.json is correct.

Log error prompt OperationDenied

When the log file prompts an error message such as rsync: send_files failed to open "…": Permission denied (13), it indicates that Alibaba Cloud Migration The cloud tool does not have permission to access the directory or folder, causing rsync to fail. At this time, you can filter the directory or folder by configuring rsync_excludes_linux.txt or Rsync/etc/rsync_excludes_win.txt, and then try again.

Log error message InvalidAccountStatus.NotEnoughBalance

The default payment mode of the transit instance is Pay-As-You-Go. When your account balance is insufficient , unable to successfully migrate to the cloud. You need to update your account status and try again.

Log error message Forbidden.RAM

The RAM account you are using does not have sufficient permissions to use the relevant API.

You need to be granted ECS and VPC access permissions AliyunECSFullAccess and AliyunVPCFullAccess. For more details, see the RAM documentation Authorization Policy Management.

Log error message InvalidImageName.Duplicated

The specified parameter image_name cannot be the same as your existing image name.

Log error message Connect to Server Failed

This error indicates that the transit instance cannot be connected. You can check by following these steps:

View log file details.

Check in sequence:

Whether the status of the transit instance is normal.

Is the local network service normal? The cloud migration tool needs to access communication ports 80, 443, 8703, and 8080. Please make sure that your server has released these ports.

After the problem is solved, run the main program again and try again.

Log error message Do Rsync Disk x Failed

This error indicates that the file transfer was interrupted. You can check by following these steps:

View error log file details. If return: 3072 or return: 7680 information prompts appear multiple times in the error log file, please confirm whether the source server database service or container service is not turned on, for example, services such as Oracle, MySQL, MS SQL Server, MongoDB, and Docker. You need to pause the service or exclude the relevant data file directories before migrating to the cloud.

Check

in sequence to see if the status of the transit instance is normal.

Is the local network service normal? The cloud migration tool needs to access communication ports 80, 443, 8703, and 8080. Please make sure that your server has released these ports.

After the problem is solved, run the main program again and try again.

Windows server is stuck at Prepare For Rsync Disk 0 stage

Windows server cloud migration is stuck at Prepare For Rsync Disk 0 stage. After checking the log file, it is found that VssSnapshotProperties::VssSnapshotProperties GetSnapshotProperties Failed: 0x80042308. At this time you can:

Enable the Volume Shadow Copy service:

Click Start in the server, enter service in the search box, and press Enter to confirm.

Find the Volume Shadow Copy service and click to start this service.

Uninstall the QEMU Guest Agent software:

Click Start on the server, enter services in the search box, and press Enter to confirm.

Check whether there is QEMU Guest Agent VSS Provider service. If there is no such service, you can directly re-run the cloud migration tool.

Find the uninstall script, which is probably located in the C:\Program Files (x86)\virtio\monitor\uninstall.bat directory, and execute the script to uninstall the QEMU Guest Agent software.

Rerun the cloud migration tool.

After migrating a Windows server, I am prompted to activate Windows when starting an instance?

You can reinstall Windows KMS Client Key and activate Windows services through KMS.

Remotely log in to the Windows instance.

Query the KMS Client Key corresponding to the Windows server on the Microsoft KMS Client Keys page, which is assumed to be xxxx-xxxx-xxxx-xxxx-xxxx.

Open the command line tool with administrator rights and run the following command:

slmgr /upk
slmgr /ipk xxxx-xxxx-xxxx-xxxx-xxxx

Use KMS to activate Windows. For more details, please refer to ECS Windows system activation method in VPC environment.

After migrating a Windows server, you start the instance and find that the data disk is missing or the drive letter is confused?

If the data disk drive letter is missing, you can open Disk Manager and add it again.

Open Control Panel > System and Security > Administrative Tools > Computer Management.

Find and right-click the data disk with missing drive letter, and click Change drive and path.

Click Add and add the data drive letter.

If the data disk drive letter is wrong, you can open Disk Manager and change it again.

Open Control Panel > System and Security > Administrative Tools > Computer Management.

Find and right-click the data disk with missing drive letter, and click Change drive and path.

Click Change and change the data drive letter.

Linux server log error message check rsync failed

Please check whether the rsync component has been installed on the system.

Linux server log error message check virtio failed

Please check whether the virtio driver is installed on the system.

Linux server log error message check selinux failed

Please check whether SElinux has been disabled.

You can run setenforce 0 to temporarily turn off SELinux.

Linux server log error message Do Grub Failed

When the log file prompts an error message such as Do Grub Failed, make sure that the source server has installed the system boot program GRUB (GRand Unified Bootloader). You can install the system boot program GRUB of version 1.9 or above and try again.

After migrating a Linux server, you start the instance and find that there is no data in the original data disk directory?

After migrating a Linux server with a data disk, the data disk will not be mounted by default when starting the instance. You can run the ls /dev/vd* command after starting the ECS instance to view the data disk device, mount it manually according to actual needs, and edit /etc/fstab to configure automatic mounting at startup.

After migrating the Linux server, why can’t the instance created based on the custom image be started?

Check the driver. When creating an I/O optimized instance, make sure the source server has the virtio driver installed.

Check whether the source system boot configuration is correct.

If your source server system is CentOS 5 or Debian 7 with a lower kernel version, and the built-in GRUB program version is lower than 1.99, and you remotely connect to the ECS console to log in to the instance, you will find that the startup interface is as shown below Show.

You can install the system boot program GRUB of version 1.9 or above and try again.

After starting the Others Linux instance, the network service is not normal?

When importing Others Linux type image, Alibaba Cloud will not do any configuration work on the instance created by the custom image, including related network configuration, SSH configuration, etc. At this time, you need to modify the system-related network configuration yourself.

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