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FTP backup functionality is not working after Plesk upgrade to Obsidian 18.0.33 version: Failed EPSV attempt. Disabling EPSV

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Ivan Kamnev
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kb: fixed kb: bug Plesk Obsidian for Linux

Applicable to:

  • Plesk Obsidian for Linux

Symptoms

  • Plesk was upgraded to the Obsidian 18.0.33 version.

  • In an attempt to create a backup to remote FTP storage or add the remote FTP backup storage in Plesk > Tools & Settings > Backup Manager > Remote Storage Settings, the process fails with the error below:

    PLESK_ERROR: Transport error: unable to list directory: Curl error: (7) Couldn't connect to server: Last FTP request: PASV Last FTP response: 227 Entering Passive Mode
    Make sure you have entered the correct storage settings. You can check them independently with the command: curl -v -P - -u jdoe 'ftp://203.0.113.2/'

  • The manual connection to the remote FTP backup storage from the server-side fails after switching from EPSV to PASV mode:

    # curl -v -P - -u johndoe 'ftp://203.0.113.2/'
    > EPSV
    * Connect data stream passively
    * ftp_perform ends with SECONDARY: 0
    < 502 command not implemented
    * Failed EPSV attempt. Disabling EPSV
    > PASV

Cause

Product issue:

  • #PPPM-12699 "It is now again possible to create backups stored in FTP storage. This feature was broken since Plesk 18.0.33."
    Fixed in:

Resolution

  1. Upgrade Plesk to 18.0.34 version.
  2. Log into Plesk.
  3. Go to Extensions > My Extensions > Panel.ini Editor > Open > Editor.

    Note: in case the Panel.ini Editor extension is missing, install it using this article.

  4. Add the line below under the [pmm] section:

    ftpAllowPassiveIpChange = 1

  5. Scroll down and press the Save button.
In case an upgrade is not possible 

Note: apply the workaround below only if the remote FTP storage supports active mode.

  1. Log into Plesk.
  2. Go to  Tools & Settings > Backup Manager > Remote Storage Settings.
  3. Uncheck the Use passive mode option and press the OK button to apply the changes:
    remote.png

Comments

7 comments

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  • Avatar
    Admin (Edited )

    I've upgraded to 18.0.34 and the error is still there. I tried the workaround 1 and it didn't work. I can't use the workaround 2 since the ftp server doesn't have active mode and is controlled by my hosting company. 

    Can you help? Thanks

    1
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  • Avatar
    Yannick Abehssera

    I also upgraded to 18.0.34 and cant connect to FTP, Workaround 1 is not working for me.

    1
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  • Avatar
    FGP

    The problem persist.

    0
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  • Avatar
    Ivan Kamnev

    Hello FGP,

    Please submit the request to Plesk support that we can check such a case directly.
    Here is how: https://support.plesk.com/hc/en-us/articles/213608509

    0
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  • Avatar
    FGP

    I finally found what was the problem. I had a '@' on my password. It's a problem of libcurl, because other plesk installation all works as expected. 

    0
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  • Avatar
    Admin

    The solution is now working, thanks

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  • Avatar
    Kuzma Ivanov

    Hi there FGP,

    Thanks for sharing your solution with us!

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