Script to install Ubuntu so that it looks like a Scaleway installation

install_ubuntu.sh

for a in /dev/sda /dev/sdb /dev/sdc /dev/sdd ; do
wipefs -af $a
sgdisk -n1:1M:+1M -t1:EF02 $a
sgdisk -n2:0:+512M -t2:FD00 $a
sgdisk -n3:0:0 -t3:FD00 $a
done

mdadm --create /dev/md0 --level=raid1 --metadata=1.2 --raid-devices=4 /dev/sd[a-d]2
mdadm --create /dev/md1 --level=raid5 --metadata=1.2 --raid-devices=4 /dev/sd[a-d]3

sgdisk -n1:0:0 -t1:8300 /dev/md0
sgdisk -n1:0:0 -t1:8300 /dev/md1

apt install -y debootstrap

mkfs.ext4 /dev/md0p1
mkfs.ext4 /dev/md1p1

mount /dev/md1p1 /mnt
mkdir /mnt/boot
mount /dev/md0p1 /mnt/boot

debootstrap noble /mnt

mount --make-private --rbind /dev  /mnt/dev
mount --make-private --rbind /proc /mnt/proc
mount --make-private --rbind /sys  /mnt/sys

echo /dev/md1p1 / ext4 defaults 0 0 > /mnt/etc/fstab
echo /dev/md0p1 /boot ext4 defaults 0 0 >> /mnt/etc/fstab

chroot /mnt

apt update
apt upgrade -y
apt install -y mdadm gdisk rsync
apt install -y grub-pc linux-image-generic
apt install -y openssh-server

grub-install /dev/sda

passwd