- Plesk Onyx for Linux
Migration or website importing of a domain to Plesk fails with error:
CONFIG_TEXT: [INFO] START: Check connections
[ERROR] Failed to perform action: Check connections
Error while checking connection settings: 'Failed to connect to the source server by SSH: Incompatible ssh server (no acceptable macs)'
Migration was stopped.
A source server is connected through Paramiko implementation of SSH2.
SSH is configured without Paramiko preferred Message Authentication Code (MAC) algorithms on the source server:
# grep "MACs" /etc/ssh/sshd_config
- #PMT-4361 "Plesk Migrator no longer fails if the source server has customized SSH config and allows only new secure MACs."
- Plesk Obsidian 23 October 2018 (fixed as PPP-36076, Linux)
If update is not possible for some reason you may try the following
Connect to the source server using SSH.
Open the file
/etc/ssh/sshd_configin any text editor and add the following MACs, e.g:
CONFIG_TEXT: MACs hmac-sha1,hmac-md5,hmac-sha1-96,hmac-md5-96
Note: MACs should be appended to existing string with MACs declaration
Reload SSH service:
# service sshd reload
Restart migration or website importing.