Use Ansible to migrate all my configuration and have a new Linux OS running in less that 20 minutes.
The first steps are actually external to the automatic configuration, as some of them need to have the OS running so that they can be executed with Ansible.
Select the disk where the partitions are going to be created:
fdisk -l
fdisk /dev/sdXCreate partitions root, swap and boot, and assign their types:
- New partition -> Primary -> Partition number -> First sector -> Last sector (offset)
- Change partition type -> Partition number -> Type of partition:
83- Linux filesystem82- Linux swapef- UEFI FAT 16/32
n p 1 <enter> +300M # Hex code ef00
t 1 ef <enter>
n p 2 <enter> +250M # Hex code 8300
t 2 83 <enter>
n p 3 <enter> +500G (to be encrypted) Hex code 8300
t 3 83 <enter>Format partitions:
mkfs.fat -F 32 /dev/sdX1
mkfs.ext4 /dev/sdX2Setup the encryption of the system:
cryptsetup --cipher aes-xts-plain64 --verify-passphrase --use-random luksFormat /dev/sdX3
cryptsetup luksOpen /dev/sdX3 luksCreate encrypted partitions - this creates on partition for root, modify if need /home or other partitions separate.
pvcreate /dev/mapper/luks
vgcreate vg0 /dev/mapper/luks
lvcreate --size 8G vg0 --name swap
lvcreate -l +100%FREE vg0 --name rootCreate filesystems on encrypted partitions:
mkfs.ext4 /dev/mapper/vg0-root
mkswap /dev/mapper/vg0-swapmount /dev/mapper/vg0-root /mnt # /mnt is the installed system
swapon /dev/mapper/vg0-swap # Not needed but a good thing to test
mkdir /mnt/boot
mount /dev/sdX2 /mnt/boot
mkdir /mnt/boot/efi
mount /dev/sdX1 /mnt/boot/efipacstrap /mnt base base-devel git vim lvm2 grub-efi-x86_64 efibootmgr os-prober linux linux-firmwaregenfstab -pU /mnt >> /mnt/etc/fstab
tmpfs /tmp tmpfs defaults,noatime,mode=1777 0 0
# Make /tmp a ramdisk (add the following line to /mnt/etc/fstab)
# Change relatime on all non-boot partitions to noatime (reduces wear if using an SSD)arch-chroot /mnt /bin/bashln -s /usr/share/zoneinfo/Europe/Madrid /etc/localtime
hwclock --systohc --utcecho HOSTNAME > /etc/hostnameecho LANG=en_US.UTF-8 >> /etc/locale.conf
echo LANGUAGE=en_US >> /etc/locale.conf
echo LC_ALL=C >> /etc/locale.confpasswdvim /etc/mkinitcpio.conf
# Add 'ext4' to MODULES
# Add 'encrypt' and 'lvm2' to HOOKS before filesystems
# Regenerate initrd image
mkinitcpio -p linuxgrub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-ud=GRUB
# In /etc/default/grub:
# - edit the line GRUB_CMDLINE_LINUX to GRUB_CMDLINE_LINUX="cryptdevice=/dev/sdX3:luks:allow-discards"
# - uncomment GRUB_DISABLE_OS_PROBER=false
# then run:
grub-mkconfig -o /boot/grub/grub.cfgFinally, you need to copy this repository and run the playbook
git clone https://github.com/PabloAceG/20min-migration.git
ansible-playbook run.yml
# Exit the newly created and configured system
exitUnmount all partitions and then reboot:
umount -R /mnt swapoff -a