sh/bash/ovh-rescue.sh
2023-05-13 03:18:59 +02:00

156 lines
4 KiB
Bash

function ovh-rescue-setup {
# apt / conf
echo -n "\
Acquire::AllowInsecureRepositories False;
Acquire::AllowWeakRepositories False;
Acquire::AllowDowngradeToInsecureRepositories False;
Acquire::Check-Valid-Until True;
APT::Install-Recommends False;
APT::Install-Suggests False;
APT::Get::Show-Versions True;
Dir::Etc::SourceParts '';
Dpkg::Progress True;
" > '/etc/apt/apt.conf'
# apt / sources
echo -n "\
deb https://deb.debian.org/debian buster main contrib non-free
deb https://deb.debian.org/debian buster-backports main contrib non-free
deb https://deb.debian.org/debian buster-updates main contrib non-free
deb https://deb.debian.org/debian-security buster/updates main contrib non-free
" > '/etc/apt/sources.list'
# bash / rc
link_bashrc
# host name
echo -n 'ovh' > '/etc/hostname'
# locales
echo -n "\
en_US.UTF-8 UTF-8
fr_FR.UTF-8 UTF-8
" > '/etc/locale.gen'
# fix alias
rm --force '/usr/share/locale/locale.alias'
ln --symbolic '/etc/locale.alias' '/usr/share/locale/locale.alias'
# generate locales
locale-gen
}
function ovh-rescue-install {
local release='buster'
local packages=(
'byobu' 'mosh'
'parted' 'mdadm' 'lvm2'
'lshw'
'file'
'grub-efi-amd64-bin' 'grub-pc-bin'
'htop' 'iotop' 'lsof'
'exa' 'ncdu' 'nnn' 'ranger' 'tree'
'squashfs-tools'
'uuid-runtime'
)
local backports=(
'cryptsetup-bin'
'git'
'rsync'
)
# update catalog
apt-get update
#
export DEBIAN_FRONTEND='noninteractive'
# upgrade packages
apt-get upgrade --assume-yes
# install packages
apt-get install --assume-yes "${packages[@]}"
# install backports
apt-get install --assume-yes \
--target-release "${release}-backports" "${backports[@]}"
# clean cache
apt-get clean
}
function ovh-rescue-upload {
local host="${1}"
if [ "${host}" ] ; then
local user='root'
#
local user_host="${user}@${host}"
# remove fingerprints
ssh-keygen -R "${host}"
# copy ssh id
ssh-copy-id \
-o 'StrictHostKeyChecking=accept-new' \
"${user_host}"
# upload root
rsync --delete --recursive "${MAIN_ROOT}/" "${user_host}:/etc/bash/"
# call setup
ssh "${user_host}" -- "source '/etc/bash/main.sh' ; ovh-rescue-setup"
# create session
ssh "${user_host}" -- byobu new-session -d
# attach session
mosh "${user_host}" -- byobu attach-session
else
echo 'Host?'
return 1
fi
}
function ovh-rescue-wipe-1-2TB {
local device='/dev/sda'
local unit='mib'
#
echo -n 'WIPE' "${device}" '/?\ OR CANCEL /!\'
read
#
parted "${device}" --script mktable gpt
#
parted "${device}" unit "${unit}" mkpart 'crypt' 65795 1907729
#
parted "${device}" unit "${unit}" mkpart 'boot' 259 65795
#
parted "${device}" unit "${unit}" mkpart 'esp' 2 259
parted "${device}" set 3 esp on
#
parted "${device}" unit "${unit}" mkpart bios 1 2
parted "${device}" set 4 bios_grub on
# wipe bios
dd if='/dev/zero' of='/dev/sda4'
# format esp
mkfs.vfat -F 32 -n 'esp' '/dev/sda3'
# format boot
mkfs.ext4 -L 'boot' '/dev/sda2'
# read passphrase
local passphrase
read passphrase
# encrypt
echo "${passphrase}" \
| cryptsetup \
--verbose \
--batch-mode \
--type 'luks2' \
--pbkdf 'argon2id' \
--cipher 'aes-xts-plain64' \
--iter-time 8192 \
--key-size 512 \
--hash 'sha512' \
--use-random \
luksFormat \
'/dev/sda1'
# open
echo "${passphrase}" \
| cryptsetup luksOpen '/dev/sda1' 'crypt'
# pv
pvcreate '/dev/mapper/crypt'
# vg
vgcreate 'crypt' '/dev/mapper/crypt'
# lv swap
lvcreate --name 'swap' --size '68719476736b' 'crypt'
# lv data
lvcreate --name 'data' --extents '100%FREE' 'crypt'
# format swap
mkswap --label 'swap' '/dev/mapper/crypt-swap'
# format data
mkfs.ext4 -L 'data' '/dev/mapper/crypt-data'
# vg off
vgchange --activate n 'crypt'
# close
cryptsetup luksClose 'crypt'
}