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rpm-ostree/doc/treefile.md
Colin Walters 3a41c65c8a treecompose: Add initramfs-args to treefile 
We're building generic initramfs images on the server side, but dracut
has logic to pick up some things from the host, like filesystems.

In the absence of host-specific initramfs images, it needs to be up to
the generating system what kernel modules end up in the initramfs.
Provide a generic option to passthrough dracut arguments.
2014-12-02 17:12:34 -05:00

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Treefile

  • ref: string, mandatory: Holds a string which will be the name of the branch for the content.

  • gpg_key string, optional: Key ID for GPG signing; the secret key must be in the home directory of the building user. Defaults to none.

  • repos array of strings, mandatory: Names of yum repositories to use, from .repo files in the same directory as the treefile.

  • selinux: boolean, optional: Defaults to true. If false, then no SELinux labeling will be performed on the server side.

  • boot_location: string, optional: Historically, ostree put bootloader data in /boot. However, this has a few flaws; it gets shadowed at boot time, and also makes dealing with Anaconda installation harder. There are 3 possible values:

    • "legacy": the default, data goes in /boot
    • "both": Kernel data in /boot and /usr/lib/ostree-boot
    • "new": Kernel data in /usr/lib/ostree-boot

  • bootstrap_packages: Array of strings, mandatory: The glibc and nss-altfiles packages (and ideally nothing else) must be in this set; rpm-ostree will modify the /etc/nsswitch.conf in the target root to ensure that /usr/lib/passwd is used.

  • etc-group-members: Array of strings, optional: Unix groups in this list will be stored in /etc/group instead of /usr/lib/group. Use this option for groups for which humans should be a member.

  • install-langs: Array of strings, optional. This sets the RPM _install_langs macro. Set this to e.g. ["en_US", "fr_FR"].

  • packages: Array of strings, mandatory: Set of installed packages. Names prefixed with an @ (e.g. @core) are taken to be the names of comps groups.

  • units: Array of strings, optional: Systemd units to enable by default

  • default_target: String, optional: Set the default systemd target

  • initramfs-args: Array of strings, optional. Passed to the initramfs generation program (presently dracut). An example use case for this with Dracut is --filesystems xfs,ext4 to ensure specific filesystem drivers are included.

  • remove-files: Delete these files from the generated tree

  • remove-from-packages: Array, optional: Delete from specified packages files which match the provided array of regular expressions. This is safer than remove-files as it allows finer grained control with less risk of too-wide regular expressions.

    Each array element is an array, whose first member is a package name, and subsequent members are regular expressions (compatible with JavaScript).

    Example: remove-from-packages: [["cpio", "/usr/share/.*"], ["dhclient", "/usr/lib/.*", "/usr/share/.*"]]

    Note this does not alter the RPM database, so rpm -V will complain.

  • postprocess-script: String, optional: Full filesystem path to a script that will be executed in the context of the target tree. The script will be copied into the target into /tmp, and run as a container (a restricted chroot, with no network access). After execution is complete, it will be deleted.

    It is strongly recommended to avoid using this except as a last resort. Having the system generated through RPMs allows administrators to understand the inputs to the system. Any new files created through this mechanism will not have the versioning inherent in RPM.

    Only the script file will be copied in; thus if it has any dependencies, on data beyond what is in the target tree, you must embed them in the binary itself.

    An example use for this is working around bugs in the input RPMs that are hard to fix in stable releases.

    Note this does not alter the RPM database, so rpm -V will complain.

  • include: string, optional: Path to another treefile which will be used as an inheritance base. The semantics for inheritance are: Non-array values in child values override parent values. Array values are concatenated. Filenames will be resolved relative to the including treefile.