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OsMutationTight.sh
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OsMutationTight.sh
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#!/bin/bash
# Reinstall Any OpenVZ/LXC VPS to Debian/CentOS/Alpine
# Author: Lloyd@nodeseek.com
# WARNING: A fresh system will be installed and all old data will be wiped.
# License: GPLv3; Partly based on https://gist.github.com/trimsj/c1fefd650b5f49ceb8f3efc1b6a1404d
function print_help(){
echo -ne "\e[1;32m"
cat <<- EOF
██████╗ ███████╗███╗ ███╗██╗ ██╗████████╗ █████╗ ████████╗██╗ ██████╗ ███╗ ██╗
██╔═══██╗██╔════╝████╗ ████║██║ ██║╚══██╔══╝██╔══██╗╚══██╔══╝██║██╔═══██╗████╗ ██║
██║ ██║███████╗██╔████╔██║██║ ██║ ██║ ███████║ ██║ ██║██║ ██║██╔██╗ ██║
██║ ██║╚════██║██║╚██╔╝██║██║ ██║ ██║ ██╔══██║ ██║ ██║██║ ██║██║╚██╗██║
╚██████╔╝███████║██║ ╚═╝ ██║╚██████╔╝ ██║ ██║ ██║ ██║ ██║╚██████╔╝██║ ╚████║
╚═════╝ ╚══════╝╚═╝ ╚═╝ ╚═════╝ ╚═╝ ╚═╝ ╚═╝ ╚═╝ ╚═╝ ╚═════╝ ╚═╝ ╚═══╝
Reinstall Any OpenVZ/LXC VPS to Debian/CentOS/Alpine;
[warning] A fresh system will be installed and all old data will be wiped!
Author: Lloyd@nodeseek.com
EOF
echo -ne "\e[m"
}
function read_virt_tech(){
cttype=$(virt-what | sed -n 1p)
if [[ $cttype == "lxc" || $cttype == "openvz" ]]; then
[[ $cttype == "lxc" ]] && echo -e '\e[1;33mYour container type: lxc\e[m' || echo -e '\e[1;33mYour container type: openvz\e[m'
else
while [ "$cttype" != 'lxc' -a "$cttype" != 'openvz' ] ; do
echo -ne "\e[1;33mplease input container type (lxc/openvz):\e[m"
read cttype
done
fi
}
function install(){
if [ -n "$(command -v apt)" ] ; then
cmd1="apt-get"
cmd2="apt-get install -y"
elif [ -n "$(command -v yum)" ] ; then
cmd1="yum"
cmd2="yum install -y"
elif [ -n "$(command -v dnf)" ] ; then
cmd1="dnf"
cmd2="dnf install -y"
elif [ -n "$(command -v apk)" ] ; then
cmd1="apk"
cmd2="apk add"
else
echo "Error: Not Supported Os"
exit 1
fi
$cmd1 update
$cmd2 "$@"
}
function read_lxc_template(){
last_lxc_version=$(curl -Ls "https://api.github.com/repos/LloydAsp/OsMutation/releases/latest" | grep "LXC" | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/')
if [[ -n $last_lxc_version ]]; then
image_list=$(curl -Ls "https://api.github.com/repos/LloydAsp/OsMutation/releases/latest" | grep "LXC" | grep '"browser_download_url":' | sed -E 's/.*"([^"]+)".*/\1/')
os_list=$(curl -Ls "https://api.github.com/repos/LloydAsp/OsMutation/releases/latest" | grep "LXC" | grep '"browser_download_url":' | sed -E 's/.*"([^"]+)".*/\1/' | sed "s/https\:\/\/github.com\/LloydAsp\/OsMutation\/releases\/download\/${last_lxc_version}\///g" | sed "s/\.tar\.gz//g")
echo "$os_list" | nl
while [ -z "${os_index##*[!0-9]*}" ]; do
echo -ne "\e[1;33mplease select os (input number):\e[m"
read os_index
done
download_link=$(echo "$image_list" | head -n $os_index | tail -n 1)
else
server=http://images.linuxcontainers.org
path=$(wget -qO- ${server}/meta/1.0/index-system | \
grep -v edge | grep default | \
awk '-F;' '(( $1=="debian" || $1=="centos" || $1=="alpine") && ( $3=="amd64" || $3=="i386")) {print $NF}')
os_list=$( echo "$path" | sed -E 's%/images/(.*)/default/.*/%\1%g' | sed 's%/%-%g' )
echo "$os_list" | nl
while [ -z "${os_index##*[!0-9]*}" ]; do
echo -ne "\e[1;33mplease select os (input number):\e[m"
read os_index
done
path=$( echo "$path" | head -n $os_index | tail -n 1)
os_selected=$(echo "$os_list" | head -n $os_index | tail -n 1 )
download_link=${server}/${path}/rootfs.tar.xz
fi
}
function read_openvz_template(){
releasetag="v0.0.1"
os_list=$(wget -qO- "https://github.com/LloydAsp/OsMutation/releases/expanded_assets/v0.0.1" | \
sed -nE '/tar.gz/s/.*>([^<>]+)\.tar\.gz.*/\1/p' | \
grep -E "(debian)|(centos)|(alpine)" )
echo "$os_list" | nl
while [ -z "${os_index##*[!0-9]*}" ];
do
echo -n "please select os (input number):"
read os_index
done
os_selected=$( echo "$os_list" | head -n $os_index | tail -n 1)
download_link="https://github.com/LloydAsp/OsMutation/releases/download/${releasetag}/${os_selected}.tar.gz"
}
function download_rootfs(){
cd /oldroot;
rm -rf $(ls /oldroot | grep -vE "(^dev|^proc|^sys|^run|^x)") ;
if [ "$cttype" == 'lxc' ] ; then
#rootfs.tar.xz
wget -qO- $download_link | tar -C /oldroot -xJv --delay-directory-restore --exclude="dev" --exclude="proc" --exclude="run" --exclude="sys"
else
wget -qO- $download_link | tar -C /oldroot -xzv --delay-directory-restore --exclude="dev" --exclude="proc" --exclude="run" --exclude="sys"
fi
}
function migrate_configuration(){
dest_os_dir="$1"
# save root password and ssh directory
sed -i '/^root:/d' "/$dest_os_dir/etc/shadow"
grep '^root:' /etc/shadow >> "/$dest_os_dir/etc/shadow"
[ -d /root/.ssh ] && cp -a cp -a "/root/.ssh" "/$dest_os_dir/root/"
# save network configuration
dev=$(ip route get 8.8.8.8 | sed -n 's/.*dev \([^\ ]*\).*/\1/p' | head -n 1)
[ -d "/$dest_os_dir/etc/network/" ] || mkdir -p "/$dest_os_dir/etc/network/"
ipaddr_with_mask=$(ip addr show dev $dev | sed -nE '/global/s/.*inet (.+) brd.*$/\1/p' | head -n 1)
hostname=$(hostname)
route_part="$(ip route show default 0.0.0.0/0 | sed -E 's/^(.*dev [^ ]+).*$/\1/')"
gateway_line="up ip route add $route_part"
# manual save network
if [ -f /etc/network/interfaces ] && grep static /etc/network/interfaces > /dev/null ; then
cp -rf /etc/network/interfaces "/$dest_os_dir/etc/network/interfaces"
else
cat > "/$dest_os_dir/etc/network/interfaces" <<- EOF
auto lo
iface lo inet loopback
auto $dev
iface $dev inet static
address $ipaddr_with_mask
$gateway_line
hostname $hostname
EOF
fi
rm "/$dest_os_dir/etc/resolv.conf"
cat > "/$dest_os_dir/etc/resolv.conf" <<- EOF
nameserver 8.8.8.8
nameserver 2001:4860:4860::8888
EOF
}
function chroot_run(){
if grep -qi alpine /x/etc/issue; then
chroot "/x/" sh -c "[ -f /bin/bash ] || apk add bash"
fi
chroot "/x/" /bin/bash -c "$*"
}
function post_install(){
export PATH="/usr/sbin:/usr/bin:/sbin:/bin"
if grep -qi alpine /etc/issue; then
install openssh bash
rc-update add sshd default
rc-update add mdev sysinit
rc-update add devfs sysinit
if grep -qa container=lxc /proc/1/environ ; then
apk add ifupdown-ng
rc-update add networking default
sed -i 's/--auto/-a/' /etc/init.d/networking # fix bug in networking script of lxc
fi
elif grep -qi debian /etc/issue; then
install ssh
if grep -qa container=lxc /proc/1/environ ; then
install ifupdown
systemctl disable systemd-networkd.service
fi
elif grep -qi centos /etc/issue; then
install openssh
if grep -qa container=lxc /proc/1/environ ; then
install ifupdown
systemctl disable systemd-networkd.service
# To-Do: Network service of CentOS need modify
fi
fi
echo PermitRootLogin yes >> /etc/ssh/sshd_config
rm -rf /x
sync
while [ "$reboot_ans" != 'yes' -a "$reboot_ans" != 'no' ] ; do
echo -ne "\e[1;33mreboot now? (yes/no):\e[m"
read reboot_ans < /dev/tty
done
if [ "$reboot_ans" == 'yes' ] ; then
reboot -f
fi
}
function install_requirement(){
if [ -n "$(command -v apk)" ] ; then
install curl sed gawk wget gzip xz tar virt-what
else
install curl sed gawk wget gzip xz-utils virt-what
fi
}
function main(){
print_help
echo -e '\e[1;32minstall requirement...\e[m'
install_requirement
read_virt_tech
if [ "$cttype" == 'lxc' ] ; then
read_lxc_template
else
read_openvz_template
fi
echo -e '\e[1;32mdownloading template...\e[m'
download_rootfs
echo -e '\e[1;32mmigrating configuration\e[m'
migrate_configuration oldroot
}
function make_temp_os(){
# prevent no access on ipv6 only vps
ping -c 3 api.github.com || echo "nameserver 2a00:1098:2c::1" > /etc/resolv.conf
temp_os_url="https://github.com/LloydAsp/OsMutation/releases/download/utils/alpine-3.18-chroot.tar.gz"
mkdir /x
if [ -n "$(command -v wget)" ] ; then
wget -qO- $temp_os_url | tar -C /x -xz
elif [ -n "$(command -v curl)" ] ; then
curl -sL $temp_os_url | tar -C /x -xz
else
install wget
wget -qO- $temp_os_url | tar -C /x -xz
fi
# backup configuration
migrate_configuration x
cp OsMutation.sh /x/
mkdir /x/oldroot
mount --bind / /x/oldroot
chroot_run env main=1 ./OsMutation.sh
umount /x/oldroot
echo -e '\e[1;32mpost processing...\e[m'
post_install
}
if [ -z "$main" ]; then
make_temp_os 2>&1 | tee reinstall.log
exit 0
fi
main