Installation Rancher OS: No grub-install?

Archive RancherOS
1

Hi guys,
I try to install Rancher OS on a RAID 1 configuration. I read this Medium article. At some point, the author is usinge grub-install but it cannot be found on my console when booting rancher os from the iso image (1.3.0 btw). Now, I am even more puzzled as I reviewed the official installation script that is also using grub-install in line 112.

What do I do wrong that I cannot find it by myself?

Thanks
Mathias

2

RancherOS used to use Grub, but uses syslinux now. You can generally follow that article except for the Grub part. After setting up your RAID and creating a RANCHER_STATE partition you should be able to do something like:

mkdir /mnt/boot
mount /dev/mdX /mnt/boot
mkdir -p /mnt/boot/boot/syslinux

INSTALLER_IMAGE=rancher/os:v1.3.0
# Setup each drive
system-docker run --privileged -v /mnt/boot:/mnt/boot --entrypoint /bin/sh ${INSTALLER_IMAGE} -c "dd bs=440 count=1 if=/usr/share/syslinux/gptmbr.bin of=/dev/sdX"

system-docker run --privileged -v /mnt/boot:/mnt/boot --entrypoint /bin/sh ${INSTALLER_IMAGE} -c "cp -a /usr/share/syslinux/* /mnt/boot/boot/syslinux/"
system-docker run --privileged -v /mnt/boot:/mnt/boot --entrypoint /bin/sh ${INSTALLER_IMAGE} -c "extlinux --install --raid /mnt/boot/boot/syslinux"
system-docker run --privileged -v /mnt/boot:/mnt/boot --entrypoint /bin/sh ${INSTALLER_IMAGE} -c "cp -a /dist/* /mnt/boot/boot/"
system-docker run --privileged -v /mnt/boot:/mnt/boot --entrypoint /bin/sh ${INSTALLER_IMAGE} -c "cp /dist/isolinux/isolinux.cfg /mnt/boot/boot/syslinux/syslinux.cfg"

echo "APPEND rancher.state.mdadm_scan rancher.state.dev=LABEL=RANCHER_STATE rancher.state.wait console=tty0" > /mnt/boot/global.cfg
cp /mnt/boot/global.cfg /mnt/boot/boot/global.cfg