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.. _tutorial_intro-to-autoinstall:
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2023-07-07 15:56:22 +00:00
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Introduction to autoinstall
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2024-04-05 11:27:14 +00:00
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===========================
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2023-07-07 15:56:22 +00:00
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Automatic Ubuntu installation is performed with the autoinstall format.
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You might also know this feature as "unattended", "hands-off" or "preseeded"
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installation.
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This format is supported in the following installers:
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* Ubuntu Server, version 20.04 and later
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* Ubuntu Desktop, version 23.04 and later
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Automatic installation lets you answer all configuration questions ahead of
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time with an *autoinstall configuration* and lets the installation process run without
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any interaction.
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For more details on the relationship between autoinstall and cloud-init, as well as their respective functions, go to:
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* :ref:`Cloud-init and autoinstall interaction <cloudinit-autoinstall-interaction>`
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* :ref:`Providing autoinstall configuration <providing-autoinstall>`
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2023-11-02 16:14:00 +00:00
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Differences from `debian-installer` preseeding
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----------------------------------------------
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2023-11-02 16:14:00 +00:00
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*preseeds* are the way to automate an installer based on `debian-installer`
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(also known as d-i).
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Autoinstalls differ from preseeds in the following ways:
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* The format is different: autoinstalls use YAML instead of the preseed
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debconf-set-selections.
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* When the answer to a question is not present in a preseed, d-i stops and
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asks the user for input. By comparison, if there is any autoinstall
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configuration at all, the autoinstall takes the default for any
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unanswered question (and fails if there is no default).
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* You can designate particular sections in the autoinstall configuration as
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"interactive", which means the installer will still stop and ask about
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those.
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Error handling
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--------------
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Progress through the installer is reported via the :ref:`ai-reporting` system,
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including errors. In addition, when a fatal error occurs, the
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:ref:`ai-error-commands` are executed and the traceback printed to the console.
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The server then just waits.
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