Anaconda configuration files¶
The installer loads its default configuration from the Anaconda configuration files. The configuration can be modified by kernel arguments and cmdline options and the result is written into a runtime configuration file. The configuration is not supposed to change after that. The runtime configuration file is loaded by the Anaconda DBus modules when they are started. It means that all Anaconda processes are running with the same configuration.
The software selected for the installation doesn’t change the Anaconda configuration and profiles in any way.
interactive-defaults.ks file will be replaced by the Anaconda configuration
files in the future. Kickstart files should be used only for the automatic installation.
The Anaconda configuration files are written in the INI format that can be processed by
configparser. The files consist
of sections, options and comments. Each section is defined by a
[section] header. Each
option is defined by a key and optionally a value separated by the
= sign. Each comment
has to start on a new line prefixed by the
See an example of a section:
[Storage Constraints] # Minimal size of the total memory. min_ram = 320 MiB # Should we recommend to specify a swap partition? swap_is_recommended = False # Recommended minimal sizes of partitions. # Specify a mount point and a size on each line. min_partition_sizes = / 250 MiB /usr 250 MiB # Required minimal sizes of partitions. # Specify a mount point and a size on each line. req_partition_sizes =
The supported sections and options are documented in the default configuration file.
Default configuration file¶
The default configuration file provides a full default configuration of the installer.
It defines and documents all supported sections and options. The file is located at
# Anaconda configuration file. # Version: unstable [Anaconda] # Run Anaconda in the debugging mode. debug = False # Enable Anaconda addons. # This option is deprecated and will be removed in in the future. # addons_enabled = True # List of enabled Anaconda DBus modules. # This option is deprecated and will be removed in in the future. # kickstart_modules = # List of Anaconda DBus modules that can be activated. # Supported patterns: MODULE.PREFIX.*, MODULE.NAME activatable_modules = org.fedoraproject.Anaconda.Modules.* org.fedoraproject.Anaconda.Addons.* # List of Anaconda DBus modules that are not allowed to run. # Supported patterns: MODULE.PREFIX.*, MODULE.NAME forbidden_modules = # List of Anaconda DBus modules that can fail to run. # The installation won't be aborted because of them. # Supported patterns: MODULE.PREFIX.*, MODULE.NAME optional_modules = org.fedoraproject.Anaconda.Modules.Subscription org.fedoraproject.Anaconda.Addons.* [Installation System] # Type of the installation system. # FIXME: This is a temporary solution. type = UNKNOWN # Should the installer show a warning about enabled SMT? can_detect_enabled_smt = False [Installation Target] # Type of the installation target. type = HARDWARE # A path to the physical root of the target. physical_root = /mnt/sysimage # A path to the system root of the target. system_root = /mnt/sysroot # Should we install the network configuration? can_configure_network = True # Should we copy input kickstart to target system? can_copy_input_kickstart = True # Should we save kickstart equivalent to installation settings to the new system? can_save_output_kickstart = True # Should we save logs from the installation to the new system? can_save_installation_logs = True [Network] # Network device to be activated on boot if none was configured so. # Valid values: # # NONE No device # DEFAULT_ROUTE_DEVICE A default route device # FIRST_WIRED_WITH_LINK The first wired device with link # default_on_boot = NONE [Payload] # Default package environment. default_environment = # List of ignored packages. ignored_packages = # Names of repositories that provide latest updates. updates_repositories = # Names of repositories disabled by default. # Supported patterns: REPO-NAME, PREFIX*, *SUFFIX, *INFIX* disabled_repositories = *source* *debuginfo* updates-testing updates-testing-modular # List of .treeinfo variant types to enable. # Valid items: # # addon # optional # variant # enabled_repositories_from_treeinfo = addon optional variant # Enable installation from the closest mirror. enable_closest_mirror = True # Default installation source. # Valid values: # # CLOSEST_MIRROR Use closest public repository mirror. # CDN Use Content Delivery Network (CDN). # default_source = CLOSEST_MIRROR # Enable ssl verification for all HTTP connection verify_ssl = True # GPG keys to import to RPM database by default. # Specify paths on the installed system, each on a line. # Substitutions for $releasever and $basearch happen automatically. default_rpm_gpg_keys = [Security] # Enable SELinux usage in the installed system. # Valid values: # # -1 The value is not set. # 0 SELinux is disabled. # 1 SELinux is enabled. # selinux = -1 [Bootloader] # Type of the bootloader. # Supported values: # # DEFAULT Choose the type by platform. # EXTLINUX Use extlinux as the bootloader. # type = DEFAULT # Name of the EFI directory. efi_dir = default # Hide the GRUB menu. menu_auto_hide = False # Are non-iBFT iSCSI disks allowed? nonibft_iscsi_boot = False # Arguments preserved from the installation system. preserved_arguments = cio_ignore zfcp.allow_lun_scan speakup_synth apic noapic apm ide noht acpi video pci nodmraid nompath nomodeset noiswmd fips selinux biosdevname ipv6.disable net.ifnames net.ifnames.prefix nosmt [Storage] # Enable dmraid usage during the installation. dmraid = True # Enable iBFT usage during the installation. ibft = True # Tell multipathd to use user friendly names when naming devices during the installation. multipath_friendly_names = True # Do you want to allow imperfect devices (for example, degraded mdraid array devices)? allow_imperfect_devices = False # Btrfs compression algorithm and level. e.g. zstd:1 btrfs_compression = # Default disk label type. # Valid values: # # gpt Prefer creation of GPT disk labels. # mbr Prefer creation of MBR disk labels. # # If not specified, use whatever Blivet uses by default. # disk_label_type = gpt # Default file system type. Use whatever Blivet uses by default. file_system_type = # Default partitioning. # Specify a mount point and its attributes on each line. # # Valid attributes: # # size <SIZE> The size of the mount point. # min <MIN_SIZE> The size will grow from MIN_SIZE to MAX_SIZE. # max <MAX_SIZE> The max size is unlimited by default. # free <SIZE> The required available space. # btrfs The mount point will be created only for the Btrfs scheme # default_partitioning = / (min 1 GiB, max 70 GiB) /home (min 500 MiB, free 50 GiB) # Default partitioning scheme. # Valid values: # # PLAIN Create standard partitions. # BTRFS Use the Btrfs scheme. # LVM Use the LVM scheme. # LVM_THINP Use LVM Thin Provisioning. # default_scheme = LVM # Default version of LUKS. # Valid values: # # luks1 Use version 1 by default. # luks2 Use version 2 by default. # luks_version = luks2 [Storage Constraints] # Minimal size of the total memory. min_ram = 320 MiB # Minimal size of the available memory for LUKS2. luks2_min_ram = 128 MiB # Should we recommend to specify a swap partition? swap_is_recommended = False # Recommended minimal sizes of partitions. # Specify a mount point and a size on each line. min_partition_sizes = / 250 MiB /usr 250 MiB /tmp 50 MiB /var 384 MiB /home 100 MiB /boot 512 MiB # Required minimal sizes of partitions. # Specify a mount point and a size on each line. req_partition_sizes = # Allowed device types of the / partition if any. # Valid values: # # LVM Allow LVM. # MD Allow RAID. # PARTITION Allow standard partitions. # BTRFS Allow Btrfs. # DISK Allow disks. # LVM_THINP Allow LVM Thin Provisioning. # root_device_types = # Mount points that must be on a linux file system. # Specify a list of mount points. must_be_on_linuxfs = / /var /tmp /usr /home /usr/share /usr/lib # Paths that must be directories on the / file system. # Specify a list of paths. must_be_on_root = /bin /dev /sbin /etc /lib /root /mnt lost+found /proc # Paths that must NOT be directories on the / file system. # Specify a list of paths. must_not_be_on_root = # Mount points that are recommended to be reformatted. # # It will be recommended to create a new file system on a mount point # that has an allowed prefix, but doesn't have a blocked one. # Specify lists of mount points. reformat_allowlist = /boot /var /tmp /usr reformat_blocklist = /home /usr/local /opt /var/www [User Interface] # The path to a custom stylesheet. custom_stylesheet = # The path to a directory with help files. help_directory = /usr/share/anaconda/help # A list of spokes to hide in UI. # FIXME: Use other identification then names of the spokes. hidden_spokes = # Should the UI allow to change the configured root account? can_change_root = False # Should the UI allow to change the configured user accounts? can_change_users = False # Define the default password policies. # Specify a policy name and its attributes on each line. # # Valid attributes: # # quality <NUMBER> The minimum quality score (see libpwquality). # length <NUMBER> The minimum length of the password. # empty Allow an empty password. # strict Require the minimum quality. # password_policies = root (quality 1, length 6) user (quality 1, length 6, empty) luks (quality 1, length 6) [License] # A path to EULA (if any) # # If the given distribution has an EULA & feels the need to # tell the user about it fill in this variable by a path # pointing to a file with the EULA on the installed system. # # This is currently used just to show the path to the file to # the user at the end of the installation. eula = [Timezone] # URL for geolocation data provider. # This is used for automatic language and timezone detection. # # Known valid providers: # # https://geoip.fedoraproject.org/city # https://api.hostip.info/get_json.php # geolocation_provider = https://geoip.fedoraproject.org/city
Profile configuration files¶
The profile configuration files allow to override some of the configuration options for
specific profiles and products. The files are located at
Anaconda previously used so called install classes for the product-specific configuration. Install classes were completely removed and replaced by the profile configuration files. These configuration files used to be called product configuration files for some time.
Each profile has a unique profile id. It is a lower-case string with no spaces that identifies
the profile. The id can be arbitrary, but the convention is to use the name of the configuration
file (for example,
The profile can be specified by the
inst.profile boot option or the
option. Based on the provided profile id, the installer will look up the right configuration
file in the
Otherwise, the profile will be chosen based on the
os-release values of the installation
environment. These values are provided by the
containing operating system identification data. The profile can define os and variant ids
that should match
VARIANT_ID options of the
os-release files. The installer
will use a profile with the best match.
Profile configuration files have one or two extra sections that describe the profile.
[Profile] section defines a profile id of the profile. Optionally, it can specify a
profile id of a base profile. For example,
fedora is a base profile of
We support a simple inheritance of profile configurations. The installer loads configuration files
of the base profiles before it loads the configuration file of the specified profile. For example,
it will first load the configuration for
fedora and then the configuration for
We are not going to support multiple inheritance. It would significantly increase the complexity of the profile configuration files in an unintuitive way. You can easily compare two configuration files and verify the parts they are supposed to share. We do that in our unit tests.
[Profile Detection] defines the operating system id and the variant id that should match
os-release values of the expected installation environment. It is useful for assigning
the profile to a specific product (for example, Fedora Server). This section is optional.
We are not going to support wildcards in the profile detection. This used to be supported in install classes and it caused a lot of problems. Without the wildcards, we will always match at most one profile.
See an example of the profile configuration file for Fedora Server:
# Anaconda configuration file for Fedora Server. [Profile] # Define the profile. profile_id = fedora-server base_profile = fedora [Profile Detection] # Match os-release values. os_id = fedora variant_id = server [Payload] # Change payload-related options. default_environment = server-product-environment [Storage] # Change storage-related options. file_system_type = xfs default_scheme = LVM
Custom configuration files¶
The custom configuration files allow to override some of the configuration options for specific
installations. The files are located at
The installer finds all files with the
.conf extension in the
directory, sorts them by their name and loads them in this order. These files are loaded after
the profile configuration files, so they have a higher priority.
For example, the initial setup installs the
10-initial-setup.conf file with a custom
All configuration files have to be loaded before the installer starts to parse the
kickstart file, so it is not possible to generate a configuration file in the
section of the kickstart file. Please, use
Runtime configuration file¶
The runtime configuration file is a temporary file that provides a full configuration of the
current installer run. It is generated by the installer and it exists only during its lifetime.
The file is located at
The runtime configuration file is loaded by the Anaconda DBus modules when they are started. It allows us to run all Anaconda processes with the same configuration.
The installer makes the following steps to create the runtime configuration file. The configuration is not supposed to change after that.
Load the default configuration file from
Load the selected profile configuration files from
Load the custom configuration files from
Apply the kernel arguments.
Apply the cmdline options.
Generate the runtime configuration file
The Anaconda configuration is represented by the
conf object from
pyanaconda.core.configuration.anaconda. The configuration sections are represented by
properties of the
conf object. The configuration options are represented by properties
of the section representation. All these properties are read-only.
conf object is initialized on the first import. It loads the runtime configuration file,
if it exists, otherwise it loads the default configuration file. Its main purpose is to provide
access to the configuration of the current installer run.
It is safe to use the
conf object in the Anaconda DBus modules and in any other Python
processes that are started after a runtime configuration file has been generated.
See an example of a Python code:
from pyanaconda.core.configuration.anaconda import conf # Is Anaconda in the debugging mode? print(conf.anaconda.debug) # Is the type of the installation target hardware? print(conf.target.is_hardware) # A path to the system root of the target. print(conf.target.system_root)