Creating Scripts in Agent Images

Precautions

• You need to prepare scripts based on the OS of the servers to be migrated.
• You need to prepare required scripts on your own. If you need help, contact the technical support.
• The methods of creating Windows and Linux agent images are based on the script examples provided by the migration team. The script examples are only for reference.
• You can download test scripts from the Huawei Support website for reference.

Windows

1. Create the C:\smsWindowesAgent folder, and create the bin, Python, and smsAgent sub-folders in this folder.

   

   Name	Function	Location
   bin	Stores the automatic startup scripts and the peagent folder.	C:\smsWiondowesAgent\bin
   python	The Python installation directory	C:\smsWiondowesAgent\python
   smsAgent	Stores Python scripts for obtaining metadata.	C:\smsWiondowesAgent\smsAgent
   peagent	Stores the migration components transferred from source servers to target servers.	C:\smsWiondowesAgent\bin\peagent

2. In the smsAgent folder, store the scripts used for obtaining certificates and keys.

   The SMS-Agent uploads SSH public and private keys to metadata of target servers. The scripts you prepared here will be used to obtain the keys from the metadata. The table below shows the three types of metadata.

   Name	Function	Destination File
   sms_rsa_part (to be deprecated)	SSH public keys (for server and identity authentication)	C:\Users\Administrator\.ssh\authorized_keys and C:\ProgramData\ssh\ssh_host_rsa_key.pub
   sms_rsa_pri_part (to be deprecated)	SSH private keys (for server and identity authentication)	C:\ProgramData\ssh\ssh_host_rsa_key
   sms_rsa_host_old	New SSH public keys (for server authentication)	C:\ProgramData\ssh\ssh_host_rsa_key.pub
   sms_rsa_host_old_pri	New SSH private keys (for server authentication)	C:\ProgramData\ssh\ssh_host_rsa_key
   sms_rsa_identity	SSH public key certificates (for identity authentication)	C:\Users\Administrator.ssh\authorized_keys
   cert_part (to be deprecated)	Public keys for TLS 1.2 authentication	C:\smsWindowesAgent\bin\peAgent\config\cert.pem
   prikey_part (to be deprecated)	Private keys for TLS 1.2 authentication	C:\smsWindowesAgent\bin\peAgent\config\prikey.pem

   sms_rsa_part and sms_rsa_pri_part are SSH public keys and private keys required for communications. The public and private keys are obtained from the metadata of target servers and then written to the destination files listed in the table above.

3. In the bin directory, add a script to check whether peagent.exe is running.

   'tasklist /nh /fi "imagename eq peAgent.exe'

   • If it is not running, add the following command to start it.

     start cmd /k "C:\smsWindowesAgent\bin\peAgent\peAgent.exe"

   • If it is running, end the script.

   This script should be executed after the scripts in the smsAgent folder are executed.

Linux

1. Create the ~\smsMetadataAgent directory, and create the bin, Python, and smsAgent folders in it.

   Name	Function	Location
   bin	Stores the automatic startup scripts and the peagent folder.	~\smsMetadataAgent\bin
   smsAgent	Stores Python scripts for obtaining metadata.	~\smsMetadataAgent\smsAgent

2. Prepare scripts for obtaining public and private keys from metadata by referring to the Windows section.

   Name	Function	Destination File
   sms_rsa_part (to be deprecated)	SSH public keys (for server and identity authentication)	root/.ssh/authorized_keys and /etc/ssh/ssh_host_rsa_key.pub
   sms_rsa_pri_part (to be deprecated)	SSH private keys (for server and identity authentication)	/etc/ssh/ssh_host_rsa_key
   sms_rsa_host_old	New SSH public keys (for server authentication)	/etc/ssh/ssh_host_rsa_key.pub
   sms_rsa_host_old_pri	New SSH private keys (for server authentication)	/etc/ssh/ssh_host_rsa_key
   sms_rsa_identity	SSH public key certificates (for identity authentication)	/root/.ssh/authorized_keys
   cert_part (to be deprecated)	Public keys for TLS 1.2 authentication	/home/config/cert.pem
   prikey_part (to be deprecated)	Private keys for TLS 1.2 authentication	/home/config/prikey.pem

   Prepare automatic startup scripts by referring to the Windows section.