Treeinfo generator

Simple scripts to generate treeinfo files. Made for EuroLinux, but can be easily adapted for any other distro.

Usage

The usage is simple as you have to provide most of the data on the command line. You can find the examples in the ./tests.sh. To generate .treeinfo for the EuroLinux 9 aarch64 and its HA repository:

./gen_treeinfo.py repo --arch aarch64 --family EuroLinux --version 9 --variant HighAvailability --output-file /path/to/repo/os/.treeinfo

The BaseOS (main repository for EL 8 and EL 9) that contains images for network installation/pxe boot is a special case, to create them you first need to calculate checksums (sha256sum) for selected files. Note that the current implementation for BaseOS adds AppStream as the second variant. It's common practive for the Enterprise Linux family:

• AlmaLinux
• CentOS Stream
• EuroLinux
• Rocky Linux
• Oracle Linux

Example:

./gen_treeinfo.py baseos --arch x86_64 --family 'EuroLinux' --version 8 \
--variant BaseOS --output-file /repo/BaseOS/x86_64/os/.treeinfo \
--checksums images/boot.iso:sha256:$(sha256sum /repo/BaseOS/x86_64/os/images/boot.iso | awk '{print $1}') \
--checksums images/efiboot.img:sha256:$(sha256sum /repo/BaseOS/x86_64/os/images/efiboot.img | awk '{print $1}') \
--checksum images/install.img:sha256:$(sha256sum /repo/BaseOS/x86_64/os/images/install.img | awk '{print $1}') \
--checksum images/pxeboot/initrd.img:sha256:$(sha256sum /repo/BaseOS/x86_64/os/images/pxeboot/initrd.img | awk '{print $1}') \
--checksum images/pxeboot/vmlinuz:sha256:$(sha256sum /repo/BaseOS/x86_64/os/images/pxeboot/vmlinuz | awk '{print $1}')

Tests

Run ./tests.sh.

Why separate script?

Most distributions use pungi or another composer to automatically generate treeinfo files. With these tools the compose process is:

• slow (at least for pungi)
• tied to the ecosystem

At EuroLinux we are developing an independent build stack that uses a lot of smaller, easier-to-manage tools. This is one of them.