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85 lines
4.5 KiB
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Basic server installation
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=========================
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This chapter provides an overview of how to install Ubuntu Server Edition. See also the guide on :ref:`how to operate the installer <operate-server-installer>` for more information on using the installer, and the :doc:`screen-by-screen guide <screen-by-screen>` for more information about each of the installer screens.
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Preparing to install
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--------------------
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This section explains various aspects to consider before starting the installation.
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System requirements
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~~~~~~~~~~~~~~~~~~~
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Ubuntu Server Edition provides a common, minimalist base for a variety of server applications, such as file or print services, web hosting, email hosting, etc. This version supports four 64-bit architectures:
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* amd64 (AMD64, Intel 64)
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* arm64 (AArch64)
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* ppc64el (POWER8 and POWER9)
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* s390x (IBM Z and LinuxONE)
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Recommended system requirements:
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* CPU: 1 GHz or better
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* RAM: 1 GB or more
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* Disk: 2.5 GB or more
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Perform a system backup
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~~~~~~~~~~~~~~~~~~~~~~~
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Before installing Ubuntu Server Edition, back up all system data.
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.. warning:: Power failures, configuration mistakes, and other problems occurring during disk (re-)partitioning can result in complete data loss. Always back up your data before performing an installation of a new system.
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Download the Server ISO
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~~~~~~~~~~~~~~~~~~~~~~~
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Download the amd64 Server Edition from `releases.ubuntu.com <https://releases.ubuntu.com/>`_. Choose the version to install and select the :guilabel:`Server install image` download. Note that the Server download includes the installer.
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There are platform-specific how-to guides for installations on:
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* `s390x LPAR <https://discourse.ubuntu.com/t/interactive-live-server-installation-on-ibm-z-lpar-s390x/16601>`_
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* `z/VM <https://discourse.ubuntu.com/t/interactive-live-server-installation-on-ibm-z-vm-s390x/16604>`_
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* `ppc64el <https://discourse.ubuntu.com/t/using-a-virtual-cdrom-and-petitboot-to-start-a-live-server-installation-on-ibm-power-ppc64el/16694>`_
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Create a bootable USB
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~~~~~~~~~~~~~~~~~~~~~
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There are many ways to boot the installer but the simplest and most common way is to `create a bootable USB stick <https://ubuntu.com/tutorials/create-a-usb-stick-on-ubuntu>`_ (`tutorials for other operating systems <https://ubuntu.com/search?q=%22create+a+bootable+USB+stick%22>`_ are also available).
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Perform the installation
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------------------------
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Now that you have prepared your installation medium, you are ready to install.
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Boot the installer
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~~~~~~~~~~~~~~~~~~
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Plug the USB stick into the system to be installed and (re)start it.
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Many computers automatically boot from available USB or DVD media. If you don't see the boot message and
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the :guilabel:`Welcome` screen, set your computer to boot from the installation media.
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.. note:: See your computer manual for instructions on how to select the boot source. You can also watch the screen during computer (re)start for a message with what key to press to access settings or a boot menu. Depending on the manufacturer, this can be :kbd:`Escape`, :kbd:`Enter`, :kbd:`F2`, :kbd:`F10` or :kbd:`F12`. Restart your computer and hold down this key until the boot menu appears, then select the drive with the Ubuntu installation medium. See also `Ubuntu Community documentation on booting from CD/DVD <https://help.ubuntu.com/community/BootFromCD>`_.
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After a few moments, the installer starts in its language selection screen.
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.. image:: figures/basic-installation-start-screen.png
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:alt: Welcome screen of the Server installer showing the language selection options
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Using the installer
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~~~~~~~~~~~~~~~~~~~
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The installer is designed to be easy to use and have sensible default settings. For a first installation, you can accept the defaults:
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#. Choose your language.
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#. Update the installer (if offered).
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#. Select your keyboard layout.
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#. Do not configure networking (the installer attempts to configure wired network interfaces via DHCP, but you can continue without networking if this fails).
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#. Do not configure a proxy or custom mirror unless you have to in your network.
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#. For storage, leave :guilabel:`Use an entire disk` checked, and choose a disk to install to, then select :guilabel:`Done` on the configuration screen and confirm the installation.
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#. Enter a username, hostname and password.
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#. On the :guilabel:`SSH Setup` and :guilabel:`Featured Server Snaps` screens, select :guilabel:`Done`.
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#. You now see log messages as the installation is completed.
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#. Select :guilabel:`Reboot` when this is complete, and log in using the username and password provided.
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