Symptoms
Migration via SSH key fails with one of the following errors in Tools & Settings > Migration and Transfer Manager:
Failed to connect to the source server 'source' (203.0.113.2) by SSH: encountered RSA key, expected OPENSSH key
Failed to check SSH connection to the source server 'source' (203.0.113.2): q must be exactly 160, 224, or 256 bits long
Failed to check SSH connection to the source server 'source' (203.0.113.2): p must be exactly 1024, 2048, or 3072 bits long
Paramiko version 2.9 or above is installed on the target server:
Debian-based OS (Debian, Ubuntu, etc.):
# dpkg --list | grep paramiko
ii plesk-py27-paramiko 2.10.3-ubuntu.20.04.220330.1131 amd64 SSH2 protocol libraryRPM-based OS (CentOS, RHEL, CloudLinux, AlmaLinux, etc.):
# rpm -qa | grep paramiko
plesk-py27-paramiko-2.10.3-1centos.7.220330.1131.x86_64OpenSSH version 5.9 or lower is installed on the source server:
# ssh -V
OpenSSH_5.3p1, OpenSSL 1.0.1e-fips 11 Feb 2013
Cause
Product issue:
- #PMT-5041
Workaround
Regardless of which Linux distributive is in use, before applying the personalized steps below, add the SSH-RSA support to the SSH client's config file at /etc/ssh/ssh_config
- Connect to the target server via SSH;
open the file
# vi /etc/ssh/ssh_config
Add the following line
# PubkeyAcceptedKeyTypes +ssh-rsa
For Debian-based distributions (Debian, Ubuntu, etc)
On Plesk's PMM repository, find the folder for your Linux Distribution and get the URL for Paramiko 2.7.
Replace the URL from the command below and fetch the Paramiko package:
# wget http://autoinstall.plesk.com/PMM_0.1.11/dist-deb-Debian-10.0-x86_64/packages/plesk-py27-paramiko_2.7.1-debian.10.200520.1813_amd64.deb
Downgrade Paramiko with the following commands:
# dpkg -r --force-depends plesk-py27-paramiko
# dpkg -i plesk-py27-paramiko_2.7.1-debian.10.200520.1813_amd64.deb
For RPM-based distributions (CentOS, RHEL, Cloudlinux, etc.)
Connect to the target server via SSH;
On Plesk's PMM repository, find the folder for your Linux Distribution and get the URL for Paramiko 2.7.
Remove the current paramiko package from the server:
# rpm -e plesk-py27-paramiko --nodeps
Replace the URL from the command below with the one from step 2 and install the Paramiko package:
# rpm -i --nodeps http://autoinstall.plesk.com/PMM_0.1.11/dist-rpm-CentOS-7-x86_64/packages/plesk-py27-paramiko-2.7.1-1centos.7.200210.1834.x86_64.rpm
