FDI iso boot options

[files]

Problem: I need to create custom Foreman Discovery Image iso (UEFI, legacy BIOS) with several additional startup scripts and kernel options. I have created FDI iso using latest version from: GitHub - theforeman/foreman-discovery-image: Foreman discovery image live distro
Server boots from iso and by default selects “Test this media & start FDI” which is second option in boot menu.

Expected outcome: How to make first option “Start FDI” default one? I cannot find where to change boot settings in image building scripts.
discovery-remaster script is provided in iso building scripts which can change boot options, but legacy BIOS mode stops working after running this script.

theforeman/foreman-discovery-image/blob/master/aux/remaster/discovery-remaster

Thanks!

[Marek_Hulan]

@files

How to make first option “Start FDI” default one? I cannot find where to change boot settings in image building scripts.

I have a feeling this comes from the livemedia-creator and is not under FDI control. You could experiment with the command based on the livemedia-creator docs, e.g. --extra-boot-args may help.

If that takes to build the FDI from scratch, these may help

Building Discovery Image on EL8

Hello, foreman discovery image is still based on EL7, but if you want to try to build it on EL8 feel free to do so and give us a feedback. Here is a tutorial: Checkout the repository and run ./build-livecd fdi-centos7.ks. Then edit the generated fdi-image.ks as follows. Change the following lines: network --bootproto=dhcp url --mirrorlist=http://mirrorlist.centos.org/?release=8&arch=$basearch&repo=baseos repo --name="AppStream" --mirrorlist=http://mirrorlist.centos.org/?release=8&arch=$base…

Discovery image based on CentOS 8

Ben, we did not want to rush this in because maintaining two versions of FDI is twice as much work and having an older version of discovery is safer when you want to install newer version of OS. With EL8 based FDI kexecing into EL7 kernel could not be even possible, I haven’t tried. But the main reason is that FDI has smart-proxy and it is not yet available for EL8, So actually to be able to ship FDI on EL8, we need to have Foreman on EL8, which is not available yet. Going forward, I’d like to…

Sorry, I can’t help anymore.

[lzap]

You do not need to rebuild FDI at all for this, discovery supports “extensions” which are ZIP files downloaded from TFTP or HTTP which are unpacked and added to PATH and FACTERLIB so you can write both facts in Ruby or run arbitrary commands. Use autostart.d directory to automatically start binaries via systemd.

If that is not enought, then simply checkout the repo, put anything you want into root subdirectory and build the image without any changes. You can put binaries there, systemd services or anything. You can install additional software by updating packages kickstart section as well.

Good luck!