How to check Plesk server for possible issues before upgrade?

Connect to the server using SSH or RDP.

Use the pre-upgrade checker:

• To list available upgrades:

  # plesk listupgrade

• To run the pre-upgrade checker for checking the upgrade to the latest available version:

  # plesk checkupgrade

• To run the pre-upgrade checker for checking the upgrade to specific version:

  # plesk checkupgrade 18.0.33

Connect to the server using SSH or RDP.

Download the archive with the pre-upgrade checker and unpack it:

• on Linux:

  # wget https://support.plesk.com/hc/en-us/article_attachments/12377929412759/preupgrade_checker_linux.tar.gz
  # tar -xzvf preupgrade_checker_linux.tar.gz

• on Windows: use the URL https://support.plesk.com/hc/en-us/article_attachments/12377929344151/preupgrade_checker_windows.zip and unpack the archive using a preferred tool.

Use the pre-upgrade checker:

Note: On 32-bit operating systems, use the binary preupgrade.386 instead of preupgrade.x64.

• on Linux:

  • To list available upgrades:

    # ./preupgrade.x64 list

  • To run the pre-upgrade checker for checking the upgrade to the latest available version:

    # ./preupgrade.x64

  • To run the pre-upgrade checker for checking the upgrade to specific version:

    # ./preupgrade.x64 18.0.33

• on Windows:

  Note: On 32-bit operating systems, use the binary preupgrade_x32.exe instead of preupgrade_x64.exe.

  • To list available upgrades:

    .\preupgrade_x64.exe list

  • To run the pre-upgrade checker for checking the upgrade to the latest available version:

    .\preupgrade_x64.exe

  • To run the pre-upgrade checker for checking the upgrade to specific version:

    .\preupgrade_x64.exe 18.0.33