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Applies to openSUSE Leap 15.1

3 Installation Steps Edit source


This chapter describes the procedure in which the data for openSUSE Leap is copied to the target device. Some basic configuration parameters for the newly installed system are set during the procedure. A graphical user interface will guide you through the installation. The text mode installation has the same steps and only looks different. For information about performing non-interactive automated installations, see Book “AutoYaST Guide.

If you are a first-time user of openSUSE Leap, you should follow the default YaST proposals in most parts, but you can also adjust the settings as described here to fine-tune your system according to your preferences. Help for each installation step is provided by clicking Help.

Tip: Installation Without a Mouse

If the installer does not detect your mouse correctly, use →| for navigation, arrow keys to scroll, and Enter to confirm a selection. Various buttons or selection fields contain a letter with an underscore. Use AltLetter to select a button or a selection directly instead of navigating there with →|.

3.1 Overview Edit source

This section provides an overview of all installation steps. Each step contains a link to a more detailed description.

  1. Before the installation starts, the installer can update itself. For details, see Section 3.2, “Installer Self-Update”.

  2. The actual installation starts with choosing the language and accepting the license agreement. For details, see Section 3.3, “ Language, Keyboard, and License Agreement.

  3. Configure the network. This is only required when you need network access during the installation and the automatic network configuration via DHCP failed. If the automatic network configuration succeeded, this step is skipped. For details, see Section 3.4, “Network Settings”.

  4. Configure the online repositories. By adding official openSUSE repositories, you get access to more software and get the latest security updates already during installation. For details, see Section 3.5, “Online Repositories”. This step is optional and can be skipped.

  5. Select a desktop or a role for your system. Among other things, this defines the default list of packages to install and makes a suggestion for partitioning the hard disks. For details, see Section 3.6, “System Role”.

  6. Partition the hard disks of your system. For details, see Section 3.7, “Partitioning”.

  7. Choose a time zone. For details, see Section 3.8, “Clock and Time Zone”.

  8. Create a user. For details, see Section 3.9, “Create New User”.

  9. Optionally, set a different password for the system administrator root. For details, see Section 3.10, “Authentication for the System Administrator root.

  10. In a final step, the installer presents an overview of all settings. If required, you can change them. For details, see Section 3.11, “Installation Settings”.

  11. The installer copies all required data and informs you about the progress. For details, see Section 3.12, “Performing the Installation”.

3.2 Installer Self-Update Edit source

During the installation and upgrade process, YaST can update itself to solve bugs in the installer that were discovered after the release. This functionality is enabled by default; to disable it, set the boot parameter self_update to 0. For more information, see Section 2.4.4, “Enabling the Installer Self-Update”.

Important: Quarterly Media Update: Self-Update Disabled

The installer self-update is only available if you use the GM images of the Unified Installer and Packages ISOs. If you install from the ISOs published as quarterly update (they can be identified by the string QU in the name), the installer cannot update itself, because this feature has been disabled in the updated media.

Important: Networking during Self-Update

To download installer updates, YaST needs network access. By default, it tries to use DHCP on all network interfaces. If there is a DHCP server in the network, it will work automatically.

If you need a static IP setup, you can use the ifcfg boot argument. For more details, see the linuxrc documentation at https://en.opensuse.org/Linuxrc.

Tip: Language Selection

The installer self-update is executed before the language selection step. This means that progress and errors which happen during this process are displayed in English by default.

To use another language for this part of the installer, use the language boot parameter if available for your architecture, for example, language=de_DE. On machines equipped with a traditional BIOS, alternatively, press F2 in the boot menu and select the language from the list.

Although this feature was designed to run without user intervention, it is worth knowing how it works. If you are not interested, you can jump directly to Section 3.3, “ Language, Keyboard, and License Agreement and skip the rest of this section.

3.2.1 Self-Update Process Edit source

The process can be broken down into two different parts:

  1. Determine the update repository location.

  2. Download and apply the updates to the installation system. Determining the Update Repository Location Edit source

Installer Self-Updates are distributed as regular RPM packages via a dedicated repository, so the first step is to find out the repository URL.

Important: Installer Self-Update Repository Only

No matter which of the following options you use, only the installer self-update repository URL is expected, for example:


Do not supply any other repository URL—for example the URL of the software update repository.

YaST will try the following sources of information:

  1. The self_update boot parameter. (For more details, see Section 2.4.4, “Enabling the Installer Self-Update”.) If you specify a URL, it will take precedence over any other method.

  2. The /general/self_update_url profile element in case you are using AutoYaST.

  3. If none of the previous attempts worked, the fallback URL (defined in the installation media) will be used. Downloading and Applying the Updates Edit source

When the updates repository is determined, YaST will check whether an update is available. If so, all the updates will be downloaded and applied to the installation system.

Finally, YaST will be restarted to load the new version and the welcome screen will be shown. If no updates were available, the installation will continue without restarting YaST.

Note: Update Integrity

Update signatures will be checked to ensure integrity and authorship. If a signature is missing or invalid, you will be asked whether you want to apply the update. Temporary Self-Update Add-on Repository Edit source

Some packages distributed in the self-update repository provide additional data for the installer, like the installation defaults, system role definitions and similar. If the installer finds such packages in the self-update repository, a local temporary repository is created, to which those packages are copied. They are used during the installation process, but at the end of the installation, the temporary local repository is removed. Its packages are not installed onto the target system.

This additional repository is not displayed in the list of add-on products, but during installation it may still be visible as SelfUpdate0 repository in the package management.

3.2.2 Custom Self-Update Repositories Edit source

YaST can use a user-defined repository instead of the official one by specifying a URL through the self_update boot parameter. However, the following points should be considered:

  • Only HTTP/HTTPS and FTP repositories are supported.

  • Only RPM-MD repositories are supported (required by RMT).

  • Packages are not installed in the usual way: They are uncompressed only and no scripts are executed.

  • No dependency checks are performed. Packages are installed in alphabetical order.

  • Files from the packages override the files from the original installation media. This means that the update packages might not need to contain all files, only files that have changed. Unchanged files are omitted to save memory and download bandwidth.

Note: Only One Repository

Currently, it is not possible to use more than one repository as source for installer self-updates.

3.3 Language, Keyboard, and License Agreement Edit source

Language, Keyboard, and Product Selection
Figure 3.1: Language, Keyboard, and License Agreement

The Language and Keyboard Layout settings are initialized with the language you chose on the boot screen. If you did not change the default, it will be English (US). Change the settings here, if necessary.

Changing the language will automatically preselect a corresponding keyboard layout. Override this proposal by selecting a different keyboard layout from the drop-down box. Use the Keyboard Test text box to test the layout. The language selected here is also used to assume a time zone for the system clock. This setting can be modified later in the installed system as described in Chapter 6, Changing Language and Country Settings with YaST.

Read the license agreement. It is presented in the language you have. Translations are available via the License Language drop-down box. Proceed with Next if you agree to the terms and conditions. If you do not agree, click Abort to terminate the installation.

3.4 Network Settings Edit source

After booting into the installation, the installation routine is set up. During this setup, an attempt to configure at least one network interface with DHCP is made. In case this attempt has failed, the Network Settings dialog launches now.

Network Settings
Figure 3.2: Network Settings

Choose a network interface from the list and click Edit to change its settings. Use the tabs to configure DNS and routing. See Book “Reference”, Chapter 13 “Basic Networking”, Section 13.4 “Configuring a Network Connection with YaST” for more details.

In case DHCP was successfully configured during installation setup, you can also access this dialog by clicking Network Configuration at the the Installation Settings step. It lets you change the automatically provided settings.

Note: Network Configuration with Boot Parameters

If at least one network interface has been configured via boot parameters (see Section 2.3.2, “Configuring the Network Interface”), automatic DHCP configuration is disabled and the boot parameter configuration is imported and used.

Tip: Accessing Network Storage or Local RAID

To access a SAN or a local RAID during the installation, you can use the libstorage command line client for this purpose:

  1. Switch to a console with CtrlAltF2.

  2. Install the libstoragemgmt extension by running extend libstoragemgmt.

  3. Now you have access to the lsmcli command. For more information, run lsmcli --help.

  4. To return to the installer, press AltF7

Supported are Netapp Ontap, all SMI-S compatible SAN providers, and LSI MegaRAID.

3.5 Online Repositories Edit source

A system analysis is performed, where the installer probes for storage devices, and tries to find other installed systems. If a network connection with Internet access is available, you will be asked to activate the online repositories. Answer with Yes to proceed. In case you do not have Internet access, this step will be skipped.

The online repositories are official openSUSE package sources. They not only offer additional packages not included on the installation media, but also the update repositories containing security and bug fixes. Using the default selection is recommended. Add at least the Main Update Repository, because it makes sure the system is installed with the latest security patches.

You have the following choices:

  • The Main Repository (OSS) contains open source software (OSS). Compared to the DVD installation media, it contains many additional software packages, among them many additional desktop systems.

  • The Main Update Repository contains security updates and fixes for packages from the Main Repository (OSS) and the DVD installation media. Choosing this repository is recommended for all installation scenarios.

  • The Main Repository (Non-OSS) contains packages with a proprietary software license. Choosing it is not required for installing a custom desktop system.

  • Choosing Main Update Repository (Non-OSS) is recommended when also having chosen the Main Repository (Non-OSS). It contains the respective updates and security fixes.

  • All other repositories are intended for experienced users and developers. Click on a repository name to get more information.

Confirm your selection with Next. Depending on your choice, you need to confirm one or more license agreements. Do so by choosing Next until you proceed to the System Role screen. Now choose Next to proceed.

3.6 System Role Edit source

openSUSE Leap supports a broad range of features. To simplify the installation, the installer offers predefined use cases which adjust the system to be installed so it is tailored for the selected scenario.

System Role
Figure 3.3: System Role

Choose the System Role that meets your requirements best. The availability of system roles depends on your selection of modules and extensions. Therefore, the dialog is omitted under the following conditions:

  • If from the enabled modules no role is suitable for the respective base product. In this case, the installation proceeds with the default settings for this product.

  • If from the enabled modules only one role is suitable for the respective base product. In this case, the installation proceeds with the settings of this particular role.

With the default selection, the following system roles are available:

Desktop with KDE Plasma

A powerful desktop environment with a complete PIM suite (mail, calendar, tasks, notes, and feeds), widgets running on the desktop and many more features. If you are familiar with Windows, KDE is the recommended choice. For more information see https://kde.org/.

Desktop with GNOME

A desktop environment offering an alternative, innovative user experience. GNOME was designed with usability and productivity in mind. For more information see https://www.gnome.org/.

Generic Desktop

In case you prefer an alternative to the KDE or GNOME desktops, choose this option. You will be able to choose between the following alternatives later in the installation process by selecting Software in the Installation Settings dialog:

Enlightenment (https://www.enlightenment.org/)
LXDE (https://lxde.org/)
LXQT (https://lxqt.org/)
MATE (https://mate-desktop.org/)
XFCE (https://xfce.org/)

Note that when installing from the DVD all these desktop systems except XFCE are only available when having enabled the MAIN Repository (OSS) in the Online Repositories step. You can still enable this repository now by using the Back button until you reach the welcome screen. From there, choose Next and then agree to add online repositories.


If setting up a server, you probably do not need a graphical user interface and desktop applications such as an office suite. This option gives you a reduced set of packages suitable for servers.

Transactional Server

Similar to the server role, but with a read-only root partition and transactional updates. This selection also is a prerequisite for setting up openSUSE Kubic. See https://kubic.opensuse.org/blog/2018-04-04-transactionalupdates/ for more information on transactional updates.

3.7 Partitioning Edit source

3.7.1 Important Information Edit source

Warning: Read this Section Carefully

Read this section carefully before continuing with Section 3.7.2, “Suggested Partitioning”.

Custom Partitioning on UEFI Machines

A UEFI machine requires an EFI system partition that must be mounted to /boot/efi. This partition must be formatted with the FAT32 file system.

If an EFI system partition is already present on your system (for example from a previous Windows installation) use it by mounting it to /boot/efi without formatting it.

If no EFI system partition is present on your UEFI machine, make sure to create it. The EFI system partition must be a physical partition or RAID 1. Other RAID levels, LVM and other technologies are not supported. It needs to be formatted with the FAT32 file system.

Custom Partitioning and Snapper

If the root partition is larger than 16 GB, openSUSE Leap by default enables file system snapshots.

openSUSE Leap uses Snapper together with Btrfs for this feature. Btrfs needs to be set up with snapshots enabled for the root partition.

If the disk is smaller than 16 GB, all Snapper features and automatic snapshots are disabled to prevent the system partition / from running out of space.

Being able to create system snapshots that enable rollbacks requires important system directories to be mounted on a single partition, for example /usr and /var. Only directories that are excluded from snapshots may reside on separate partitions, for example /usr/local, /var/log, and /tmp.

For details, see Book “Reference”, Chapter 3 “System Recovery and Snapshot Management with Snapper”.

Important: Btrfs Snapshots and Root Partition Size

Snapshots occupy space on their partition. As a rule of thumb, the older a snapshot is, or the bigger the changeset they cover is, the bigger the snapshot. Plus, the more snapshots you keep, the more diskspace you need.

To prevent the root partition running full with snapshot data, you need to make sure it is big enough. In case you do frequent updates or other installations, consider at least 30 GB for the root partition. If you plan to keep snapshots activated for a system upgrade (to be able to roll back), you should consider 40 GB or more.

Btrfs Data Volumes

Using Btrfs for data volumes is supported on openSUSE Leap 15.1. For applications that require Btrfs as a data volume, consider creating a separate file system with quota groups disabled. This is already the default for non-root file systems.

Btrfs on an Encrypted Root Partition

The default partitioning setup suggests the root partition as Btrfs. To encrypt the root partition, make sure to use the GPT partition table type instead of the MSDOS type. Otherwise the GRUB2 boot loader may not have enough space for the second stage loader.

Supported Software RAID Volumes

Installing to and booting from existing software RAID volumes is supported for Disk Data Format (DDF) volumes and Intel Matrix Storage Manager (IMSM) volumes. IMSM is also known by the following names:

Mount Points for FCoE and iSCSI Devices

FCoE and iSCSI devices will appear asynchronously during the boot process. While the initrd guarantees that those devices are set up correctly for the root file system, there are no such guarantees for any other file systems or mount points like /usr. Hence any system mount points like /usr or /var are not supported. To use those devices, ensure correct synchronization of the respective services and devices.

Handling of Windows Partitions in Proposals

In case the disk selected for the suggested partitioning proposal contains a large Windows FAT or NTFS partition, it will automatically be resized to make room for the openSUSE Leap installation. To avoid data loss it is strongly recommended to

  • make sure the partition is not fragmented (run a defragmentation program from Windows prior to the openSUSE Leap installation)

  • double-check the suggested size for the Windows partition is big enough

  • back up your data prior to the openSUSE Leap installation

To adjust the proposed size of the Windows partition, use the Expert Partitioner.

Proposal with a Separate Home Partition

The default proposal no longer suggests to create a separate partition for /home. The /home directory contains the user's data and personal configuration files. Placing it on a separate directory makes it easier to rebuild the system in the future, or allows to share it with different Linux installations on the same machine.

In case you want to change the proposal to create a separate partition for /home, choose Guided Setup and click Next until you reach the Filesystem Options screen. Check Propose Separate Home Partition. By default it will be formatted with XFS, but you can choose to use a different file system. Close the dialog by clicking Next again.

3.7.2 Suggested Partitioning Edit source

Define a partition setup for openSUSE Leap in this step.

Suggested Partitioning
Figure 3.4: Suggested Partitioning

The installer creates a proposal for one of the available disks containing a root partition formatted with Btrfs and a swap partition. If one or more swap partitions have been detected on the available hard disks, these partitions will be used. You have several options to proceed:


To accept the proposal without any changes, click Next to proceed with the installation workflow.

Guided Setup

To adjust the proposal, choose Guided Setup. First, choose which hard disks and partitions to use. In the Partitioning Scheme screen, you can enable Logical Volume Management (LVM) and activate disk encryption. Afterwards specify the Filesystem Options. You can adjust the file system for the root partition and create a separate home and swap partitions. If you plan to suspend your machine, make sure to create a separate swap partition and check Enlarge to RAM Size for Suspend. If the root file system format is Btrfs, you can also enable or disable Btrfs snapshots here.

Expert Partitioner

To create a custom partition setup click Expert Partitioner. Select either Start with Current Proposal if you want start with the suggested disk layout, or Start with Existing Partitions to ignore the suggested layout and start with the existing layout on the disk. You can Add, Edit, Resize, or Delete partitions.

You can also set up Logical Volumes (LVM), configure software RAID and device mapping (DM), encrypt Partitions, mount NFS shares and manage tmpfs volumes with the Expert Partitioner. To fine-tune settings such as the subvolume and snapshot handling for each Btrfs partition, choose Btrfs. For more information about custom partitioning and configuring advanced features, refer to Book “Reference”, Chapter 5 “Expert Partitioner”, Section 5.1 “Using the Expert Partitioner”.

3.8 Clock and Time Zone Edit source

In this dialog, select your region and time zone. Both are preselected according to the installation language.

Clock and Time Zone
Figure 3.5: Clock and Time Zone

To change the preselected values, either use the map or the drop-down boxes for Region and Time Zone. When using the map, point the cursor at the rough direction of your region and left-click to zoom. Now choose your country or region by left-clicking. Right-click to return to the world map.

To set up the clock, choose whether the Hardware Clock is Set to UTC. If you run another operating system on your machine, such as Microsoft Windows, it is likely your system uses local time instead. If you run Linux on your machine, set the hardware clock to UTC and have the switch from standard time to daylight saving time performed automatically.

Important: Set the Hardware Clock to UTC

The switch from standard time to daylight saving time (and vice versa) can only be performed automatically when the hardware clock (CMOS clock) is set to UTC. This also applies if you use automatic time synchronization with NTP, because automatic synchronization will only be performed if the time difference between the hardware and system clock is less than 15 minutes.

Since a wrong system time can cause serious problems (missed backups, dropped mail messages, mount failures on remote file systems, etc.), it is strongly recommended to always set the hardware clock to UTC.

If a network is already configured, you can configure time synchronization with an NTP server. Click Other Settings to either alter the NTP settings or to Manually set the time. See Book “Reference”, Chapter 18 “Time Synchronization with NTP” for more information on configuring the NTP service. When finished, click Accept to continue the installation.

If running without NTP configured, consider setting SYSTOHC=no (sysconfig variable) to avoid saving unsynchronized time into the hardware clock.

3.9 Create New User Edit source

Create a local user in this step.

Create New User
Figure 3.6: Create New User

After entering the first name and last name, either accept the proposal or specify a new User name that will be used to log in. Only use lowercase letters (a-z), digits (0-9) and the characters . (dot), - (hyphen) and _ (underscore). Special characters, umlauts and accented characters are not allowed.

Finally, enter a password for the user. Re-enter it for confirmation (to ensure that you did not type something else by mistake). To provide effective security, a password should be at least six characters long and consist of uppercase and lowercase letters, numbers and special characters (7-bit ASCII). Umlauts or accented characters are not allowed. Passwords you enter are checked for weakness. When entering a password that is easy to guess (such as a dictionary word or a name) you will see a warning. It is a good security practice to use strong passwords.

Important: User Name and Password

Remember both your user name and the password because they are needed each time you log in to the system.

If you install openSUSE Leap on a machine with one or more existing Linux installations, YaST allows you to import user data such as user names and passwords. Select Import User Data from a Previous Installation and then Choose Users for import.

If you do not want to configure any local users (for example when setting up a client on a network with centralized user authentication), skip this step by choosing Next and confirming the warning. Network user authentication can be configured at any time later in the installed system; refer to Chapter 5, Managing Users with YaST for instructions.

Two additional options are available:

Use this Password for System Administrator

If checked, the same password you have entered for the user will be used for the system administrator root. This option is suitable for stand-alone workstations or machines in a home network that are administrated by a single user. When not checked, you are prompted for a system administrator password in the next step of the installation workflow (see Section 3.10, “Authentication for the System Administrator root).

Automatic Login

This option automatically logs the current user in to the system when it starts. This is mainly useful if the computer is operated by only one user.

Warning: Automatic Login

With the automatic login enabled, the system boots straight into your desktop with no authentication. If you store sensitive data on your system, you should not enable this option if the computer can also be accessed by others.

In an environment where users are centrally managed (for example by NIS or LDAP) you may want to skip the creation of local users. Select Skip User Creation in this case.

3.10 Authentication for the System Administrator root Edit source

If you have not chosen Use this Password for System Administrator in the previous step, you will be prompted to enter a password for the System Administrator root or provide a public SSH key. Otherwise this configuration step is skipped.

Authentication for the System Administrator root
Figure 3.7: Authentication for the System Administrator root

root is the name of the superuser, or the administrator of the system. Unlike regular users, root has unlimited rights to change the system configuration, install programs, and set up new hardware. If users forget their passwords or have other problems with the system, root can help. The root account should only be used for system administration, maintenance, and repair. Logging in as root for daily work is rather risky: a single mistake could lead to irretrievable loss of system files.

For verification purposes, the password for root must be entered twice. Do not forget the root password. After having been entered, this password cannot be retrieved.

Tip: Passwords and Keyboard Layout

It is recommended to only use characters that are available on an English keyboard. In case of a system error or when you need to start your system in rescue mode a localized keyboard might not be available.

The root password can be changed any time later in the installed system. To do so run YaST and start Security and Users › User and Group Management.

Important: The root User

The user root has all the permissions needed to make changes to the system. To carry out such tasks, the root password is required. You cannot carry out any administrative tasks without this password.

In some situations it is preferred to access the system remotely via SSH using a public key. This screen allows you to select a public key from a medium.

The following procedure describes how to add a public SSH key from a USB stick. It works the same way with CD/DVD-ROM or from an existing partition. Proceed as follows:

Procedure 3.1: Adding a Public SSH Key for User root
  1. Insert into your computer the USB storage device containing the public SSH key. The public SSH key has the file extension .pub.

  2. Click Refresh. You should see the device in the list selector under Import Public Key.

  3. Click Browse and select the public SSH key.

  4. Proceed with Next.

  5. In the Installation Settings summary, make sure to check under Firewall and SSH the SSH port. Click open so it reads SSH port will be open.

After the installation is finished, you can log in through SSH using the provided public SSH key.

3.11 Installation Settings Edit source

On the last step before the real installation takes place, you can alter installation settings suggested by the installer. To modify the suggestions, click the respective headline. After having made changes to a particular setting, you are always returned to the Installation Settings window, which is updated accordingly.

If you have added an SSH key for your root as mentioned in Procedure 3.1, make sure to open the SSH port in the Firewall and SSH settings.

Installation Settings
Figure 3.8: Installation Settings

3.11.1 Software Edit source

openSUSE Leap contains several software patterns for various application purposes. The available choice of patterns and packages depends on your selection of modules and extensions.

Click Software to open the Software Selection and System Tasks screen where you can modify the pattern selection according to your needs. Select a pattern from the list and see a description in the right-hand part of the window.

Each pattern contains several software packages needed for specific functions (for example Multimedia or Office software). If you chose Generic Desktop in the System Role dialog choose a desktop environment from the list of available Graphical Environments. For a more detailed selection based on software packages to install, select Details to switch to the YaST Software Manager.

Software Selection and System Tasks
Figure 3.9: Software Selection and System Tasks

You can also install additional software packages or remove software packages from your system at any later time with the YaST Software Manager. For more information, refer to Chapter 10, Installing or Removing Software.

By default, openSUSE Leap uses the Wayland display server protocol.

Tip: Adding Secondary Languages

The language you selected with the first step of the installation will be used as the primary (default) language for the system. You can add secondary languages from within the Software dialog by choosing Details › View › Languages.

3.11.2 Booting Edit source

The installer proposes a boot configuration for your system. Other operating systems found on your computer, such as Microsoft Windows or other Linux installations, will automatically be detected and added to the boot loader. However, openSUSE Leap will be booted by default. Normally, you can leave these settings unchanged. If you need a custom setup, modify the proposal according to your needs. For information, see Book “Reference”, Chapter 12 “The Boot Loader GRUB 2”, Section 12.3 “Configuring the Boot Loader with YaST”.

Important: Software RAID 1

Booting a configuration where /boot resides on a software RAID 1 device is supported, but it requires to install the boot loader into the MBR (Boot Loader Location › Boot from Master Boot Record). Having /boot on software RAID devices with a level other than RAID 1 is not supported.

3.11.3 Security Edit source

The CPU Mitigations refer to kernel boot command line parameters for software mitigations that have been deployed to prevent CPU side-channel attacks. Click the highlighted entry to choose a different option. For details, see Book “Reference”, Chapter 12 “The Boot Loader GRUB 2” CPU Mitigations.

By default firewalld is enabled on all configured network interfaces. To globally disable the firewall for this computer, click Disable (not recommended).

Note: Firewall Settings

If the firewall is activated, all interfaces are configured to be in the External Zone, where all ports are closed by default, ensuring maximum security. The only port you can open during the installation is port 22 (SSH), to allow remote access. All other services requiring network access (such as FTP, Samba, Web server, etc.) will only work after having adjusted the firewall settings. Refer to Book “Security Guide”, Chapter 17 “Masquerading and Firewalls” for more information.

To enable remote access via the secure shell (SSH), make sure the SSH service is enabled and the SSH port is open.

Tip: Existing SSH Host Keys

If you install openSUSE Leap on a machine with existing Linux installations, the installation routine imports an SSH host key. It chooses the host key with the most recent access time by default.

If you are performing a remote administration over VNC, you can also specify whether the machine should be accessible via VNC after the installation. Note that enabling VNC also requires you to set the Default systemd Target to graphical.

3.11.4 Network Configuration Edit source

This category displays the current network settings (as automatically configured after booting into the installation, see Section 3.4) or as manually configured from the Registration or Add-On Product dialog during the respective steps of the installation process. If you want to check or adjust the network settings at this stage (before performing the installation), click Network Configuration. This takes you to the YaST Network Settings module. For details, see Book “Reference”, Chapter 13 “Basic Networking”, Section 13.4 “Configuring a Network Connection with YaST”.

3.11.5 Default systemd Target Edit source

openSUSE Leap can boot into two different targets (formerly known as runlevels). The graphical target starts a display manager, whereas the multi-user target starts the command line interface.

The default target is graphical. In case you have not installed the X Window System patterns, you need to change it to multi-user. If the system should be accessible via VNC, you need to choose graphical.

3.11.6 Import SSH Host Keys and Configuration Edit source

If an existing Linux installation on your computer was detected, YaST will import the most recent SSH host key found in /etc/ssh by default, optionally including other files in the directory as well. This makes it possible to reuse the SSH identity of the existing installation, avoiding the REMOTE HOST IDENTIFICATION HAS CHANGED warning on the first connection. Note that this item is not shown in the installation summary if YaST has not discovered any other installations. You have the following choices:

I would like to import SSH keys from a previous install:

Select this option to import the SSH host key and optionally the configuration of an installed system. You can select the installation to import from in the option list below.

Import SSH Configuration

Enable this to copy other files in /etc/ssh to the installed system in addition to the host keys.

3.11.7 System Edit source

This screen lists all the hardware information the installer could obtain about your computer. When opened for the first time, the hardware detection is started. Depending on your system, this may take some time. Select any item in the list and click Details to see detailed information about the selected item. Use Save to File to save a detailed list to either the local file system or a removable device.

Advanced users can also change the PCI ID Setup and kernel settings by choosing Kernel Settings. A screen with two tabs opens:

PCI ID Setup

Each kernel driver contains a list of device IDs of all devices it supports. If a new device is not in any driver's database, the device is treated as unsupported, even if it can be used with an existing driver. You can add PCI IDs to a device driver here. Only advanced users should attempt to do so.

To add an ID, click Add and select whether to Manually enter the data, or whether to choose from a list. Enter the required data. The SysFS Dir is the directory name from /sys/bus/pci/drivers—if empty, the driver name is used as the directory name. Existing entries can be managed with Edit and Delete.

Kernel Settings

Change the Global I/O Scheduler here. If Not Configured is chosen, the default setting for the respective architecture will be used. This setting can also be changed at any time later from the installed system. Refer to Book “System Analysis and Tuning Guide”, Chapter 12 “Tuning I/O Performance” for details on I/O tuning.

Also activate the Enable SysRq Keys here. These keys will let you issue basic commands (such as rebooting the system or writing kernel dumps) in case the system crashes. Enabling these keys is recommended when doing kernel development. Refer to https://www.kernel.org/doc/html/latest/admin-guide/sysrq.html for details.

3.12 Performing the Installation Edit source

After configuring all installation settings, click Install in the Installation Settings window to start the installation. Some software may require a license confirmation. If your software selection includes such software, license confirmation dialogs are displayed. Click Accept to install the software package. When not agreeing to the license, click I Disagree and the software package will not be installed. In the dialog that follows, confirm with Install again.

The installation usually takes between 15 and 30 minutes, depending on the system performance and the selected software scope. After having prepared the hard disk and having saved and restored the user settings, the software installation starts. Choose Details to switch to the installation log or Release Notes to read important up-to-date information that was not available when the manuals were printed.

After the software installation has completed, the system reboots into the new installation where you can log in. To customize the system configuration or to install additional software packages, start YaST.

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