echothrust / openbsd-patchrd

patch OpenBSD bsd.rd with auto_install and siteXX.tgz (rc.firsttime)

Patch OpenBSD bsd.rd with auto_install.conf & rc.firsttime

The script does the following:

• Downloads a bsd.rd image from an openbsd mirror
• Extracts the filesystem portion of the ramdisk
• Mount the filesystem
• Patch the filesystem with auto_install
• Put the filesystem back into bsd.rd
• Create a siteXX.tgz with rc.firsttime
• Create a bootable cd with the modified bsd.rd and siteXX.tgz

In order to preserve size the auto install configuration uses the 1st http mirror and then uses the siteXX.tgz from the created CD. This way our CD and bsd.rd are almost the same size.

Refs

• https://www.openbsd.org/faq/faq4.html#site
• https://github.com/ajacoutot/aws-openbsd
• https://github.com/joyent/openbsd-kvm-image-builder
• https://eradman.com/posts/openbsd-vps-installation.html