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Unable to start Plesk migration due to invalid permissions on .ssh files: Permission denied (publickey,gssapi-with-mic,password)

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Kuzma Ivanov
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Plesk for Linux kb: technical ext: migrator ABT: Group B

Applicable to:

  • Plesk for Linux

Symptoms

  • Plesk migration fails with the following error message in Plesk:

    PLESK_ERROR: Failed to fetch basic information about resellers, clients and domains data from source servers
    <...>
    stderr: Permission denied (publickey,gssapi-with-mic,password).
    rsync: connection unexpectedly closed (0 bytes received so far) [sender]
    rsync error: unexplained error (code 255) at io.c(605) [sender=3.0.9]

  • One of the following error messages appears in the logfile /var/log/secure (CentOS/RHEL) or /var/log/auth.log (Debian/Ubuntu) on the source server:

    CONFIG_TEXT: Authentication refused: bad ownership or modes for directory /root

    CONFIG_TEXT: Authentication refused: bad ownership or modes for directory /root/.ssh

    CONFIG_TEXT: Authentication refused: bad ownership or modes for file /root/.ssh/authorized_keys

Cause

Wrong permissions on the directories /root or /root/.ssh or files inside /root/.ssh.

Resolution

  1. Connect to the source server via SSH.

  2. Run the commands below to correct permissions:

    • on the /root directory:

      # chmod 550 /root
      # chown root:root /root

    • on the /root/.ssh directory:

      # chown -R root:root /root/.ssh
      # chmod 600 /root/.ssh

    • on the files inside /root/.ssh:

      # chmod 644 /root/.ssh/*

Comments

4 comments

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    webmaster

    thanks, that was the issue

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  • Avatar
    Christoph Fritz

    Does not work, starting migration on ubuntu22 to old ubuntu14 host still fails!

    (Direct login with ssh works)

    Failed to fetch basic information about resellers, clients and domains data from source servers
    Cause: Command execution failed on the local server with non-zero exit code.
    command: rsync -r --chmod=Fu=r,Du=rwx,go= --timeout=30 -e 'ssh -i /usr/local/psa/var/modules/panel-migrator/sessions/20220914173656/ssh-keys/id_rsa.XXX.XXX.XXX.XXX -p 22 -o PasswordAuthentication=no -o StrictHostKeyChecking=no -o GSSAPIAuthentication=no' /usr/local/psa/admin/plib/modules/panel-migrator/backend/lib/python/parallels/plesk/source/legacy/extras/plesk_17_0_pmm_shared/ root@XXX.XXX.XXX.XXX:/root/plesk_migrator/plesk_migrator-9sfrgaycf6qd06uhzgmcvdxpufr7k9x4/pmm_agent
    exit code: 255
    stdout:
    stderr: root@XXX.XXX.XXX.XXX: Permission denied (publickey,password).
    rsync: connection unexpectedly closed (0 bytes received so far) [sender]
    rsync error: unexplained error (code 255) at io.c(228) [sender=3.2.3]

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  • Avatar
    Casimir Albert

    Does not work, starting migration on ubuntu22 to old ubuntu14 host still fails!

    Same here. We solved the problem by directly connecting the servers via ECDSA 256bit key: https://docs.plesk.com/en-US/onyx/migration-guide/migrating-from-supported-hosting-platfoms/authentication-by-ssh-linux.77996/

    Generate the key with  

    ssh-keygen -t ecdsa -b 256
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  • Avatar
    Kuzma Ivanov

    Hi Christoph Fritz!

    There are other KB articles that address the same error message. Please check them out:

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