Installation not started after netboot with config_url

[SanekP]

Docs https://kairos.io/docs/installation/netboot/#boot-with-pre-built-isos stated that "Kairos releases include pre-built ISOs for netbooting" but I haven't found them.

I have extracted netboot artifacts with
docker run -v ./kairos-rockylinux-9-standard-amd64-generic-v3.4.2-k0sv1.32.4+k0s.0.iso:/iso -v ~/netboot:/nb --rm -ti quay.io/kairos/auroraboot netboot /iso /nb rocky
And load them via similar ipxe

#!ipxe

imgfree
set url http://d.l/my
kernel ${url}/rocky-kernel initrd=rocky-initrd rd.neednet=1 ip=dhcp rd.cos.disable root=live:${url}/rocky.squashfs netboot install-mode config_url=http://d.l/my/second.yaml console=tty1 console=ttyS0
initrd ${url}/rocky-initrd
boot

The installer loaded the same as via iso booting but it doesn't start installation. It even not touching config_url:

192.168.88.102 - - [26/May/2025:18:38:11 +0000] "GET /my/rocky-kernel HTTP/1.1" 200 14461768 "-" "iPXE/1.21.1+ (g0279)"
192.168.88.102 - - [26/May/2025:18:38:11 +0000] "GET /my/rocky-initrd HTTP/1.1" 200 83154012 "-" "iPXE/1.21.1+ (g0279)"
192.168.88.102 - - [26/May/2025:18:38:28 +0000] "GET /my/rocky.squashfs HTTP/1.1" 200 711274496 "-" "curl/7.76.1"

I assume https://kairos.io/docs/installation/automated/#via-config-url means that installation should automatically start as soon as it booted.

[jimmykarily]

The missing netboot iso is probably related to this ticket: #3425

Regarding the installation that didn't start, your example above sets config_url to http://d.l/my/second.yaml which doesn't use ${url} template like the other files do. Are you sure it's pointing to the same server? (I assume the reason you say it's not even touched is because you don't see a log line for it like you do for the others).

[SanekP]

Thanks, it works both ways config_url=${url}/second.yaml and config_url=http://d.l/my/second.yaml.
It was some glitch or tftp caching.

Regarding missing netboot iso I didn't get because I don't see them for v3.4.1 too.

[jimmykarily]

Yes, we need to update the documentation and probably only rely on ISOs to extract the netboot artifacts. There is no need to have them as separate ones.

[AlexanderTheGrey]

@jimmykarily Which past version combination of Kairos and AuroraBoot have netboot working?

[jimmykarily]

afaict, this is the last one having all the artifacts: https://github.com/kairos-io/kairos/releases/tag/v3.3.6