inception_two.sh

#!/bin/bash
#Change this to hostname you like otherwise default will be used
HOSTNAME=$HOSTNAME #<-- here
echo $HOSTNAME > /etc/hostname

#timezone
ln -fs /usr/share/zoneinfo/Europe/Berlin /etc/localtime

#set locale
sed -i '/^#de_DE\|^#en_US/s/^#//' /etc/locale.gen
locale-gen
echo "LANG=en_US.utf8" > /etc/locale.conf

# Keyboard if needed
# echo "KEYMAP=de-latin1" > /etc/vconsole.conf

# install mdadm and config write RAID config file
pacman -S --noconfirm mdadm
mdadm --detail --scan >> /etc/mdadm.conf

# Add mdadm_udev hook
sed -i '/^HOOK/s/\(filesystems\)/mdadm_udev \1/' /etc/mkinitcpio.conf
mkinitcpio -p linux

#make fstab look better
#pacman -S --noconfirm arch-install-scripts
#genfstab -U / > /etc/fstab
#pacman -R --noconfirm arch-install-scripts

#GRUB2
pacman -S --noconfirm grub
sed -i '/^GRUB_TIMEOUT/s/\(GRUB_TIMEOUT=\)\d/\11/' /etc/grub.d/grub

if [ "$?" -ne "0" ]; then
	pacman -S --noconfirm grub
	sed -i '/^GRUB_TIMEOUT/s/\(GRUB_TIMEOUT=\)\d/\11/' /etc/grub.d/grub
fi

#set root to (/boot)
echo -e 'insmod mdraid\nset root=(md1)' >> /etc/grub.d/40_custom

#install grub and generate config
grub-install --target=i386-pc --recheck --debug /dev/sda && grub-install --target=i386-pc --recheck --debug /dev/sdb 
grub-mkconfig -o /boot/grub/grub.cfg

#enable dhcp (check if dhcp service exist and what is the name of it)
#by the time of writing this can change so make sure to check if overall everything is consistant
#check service with systemctl list-unit-files
#ln -s /dev/null /etc/udev/rules.d/80-net-name-slot.rules
systemctl enable dhcpcd.service

#load your network card module on boot just in case
#be aware that yours can be different!
echo 'e1000e' > /etc/modules-load.d/intel.conf

#install ssh
pacman -S --noconfirm openssh
systemctl enable sshd.service

#also change root password to something
passwd

#Add user to login via ssh !!
#useradd -m -g users -G wheel -s /bin/bash username
#passwd username

exit

#Congrats you just installed arch linux on hetzner's server