usl-mm/setup-usl-mm

#!/bin/bash

pre_reboot_script () {
	echo "Setting timezone to Prague"
	timedatectl set-timezone Europe/Prague

	echo "Installing requirements"
	apt install cryptsetup ecryptfs-utils zfsutils-linux -y

	echo "Disabling zpool auto-scrub"
	sed -i 's/^/#/' /etc/cron.d/zfsutils-linux

	echo "Starting ecryptfs-setup-swap"
	ecryptfs-setup-swap

	echo "Starting lsblk"
	lsblk

	read -p "Enter partition to encrypt:" PARTITION
	pass_var=$(dialog --passwordbox "Enter password to crypted partition:" 25 25  --output-fd 1)

	echo "Starting luksFormat"
	echo -n "$pass_var" | cryptsetup luksFormat $PARTITION -

	echo "Opening crypted partition"
	echo "$pass_var" | cryptsetup open $PARTITION crypt -c -

	echo "Creating zpool"
	zpool create crypt /dev/mapper/crypt -o ashift=12

	echo "Enabling compression on zpool"
	zfs set compression=on crypt

	echo "Creating datasets crypt/lxd/dir crypt/lxd/storage"
	zfs create crypt/lxd
	zfs create crypt/lxd/dir
	zfs create crypt/lxd/storage

	echo "Stopping and disabling lxd"
	systemctl disable lxd
	systemctl disable lxd.socket
	systemctl stop lxd

	echo "Deleting everything in /var/lib/lxd/*"
	rm /var/lib/lxd/* -r

	echo "Creating mountpoint /var/lib/lxd to crypt/lxd/dir"
	zfs set mountpoint=/var/lib/lxd crypt/lxd/dir

	echo "Configuring sysctl"
	echo "vm.swappiness = 1" > /etc/sysctl.d/50-usl-mm.conf
	echo "vm.min_free_kbytes = 131072" >> /etc/sysctl.d/50-usl-mm.conf
	echo "vm.dirty_background_ratio = 5" >> /etc/sysctl.d/50-usl-mm.conf

	echo "Configuring arc cache for zfs to min 256MB and max 1536MB"
	echo "options zfs zfs_arc_min=268435456" > /etc/modprobe.d/zfs.conf
	echo "options zfs zfs_arc_max=1610612736" >> /etc/modprobe.d/zfs.conf

	echo "Configuring network to use bridge"
echo "Exec ifconfig"
ifconfig
read -p "Enter interface for configure bridge:" NET_IF
echo "auto lo" > /etc/network/interfaces
echo "iface lo inet loopback" >> /etc/network/interfaces
echo " " >> /etc/network/interfaces
echo "iface $NET_IF inet manual" >> /etc/network/interfaces
echo "iface $NET_IF inet6 manual" >> /etc/network/interfaces
echo "auto br0" >> /etc/network/interfaces
echo "iface br0 inet dhcp" >> /etc/network/interfaces
echo "    bridge_ports $NET_IF" >> /etc/network/interfaces
echo "    bridge_stp off" >> /etc/network/interfaces
echo "    bridge_fd 0" >> /etc/network/interfaces
echo " " >> /etc/network/interfaces
echo "iface br0 inet6 auto" >> /etc/network/interfaces
echo "    bridge_ports $NET_IF" >> /etc/network/interfaces
echo "    bridge_stp off" >> /etc/network/interfaces
echo "    bridge_fd 0" >> /etc/network/interfaces


	echo "Purging netplan,disabling dhcpcd and install ifupdown"
	apt purge nplan -y
	rm /etc/netplan/50-cloud-init.yaml
	apt install bridge-utils ifupdown -y

	echo "Doing apt update and apt dist-upgrade"
	apt update
	apt dist-upgrade -y

	echo "Creating onstart script in /root"
	echo "#!/bin/bash" > /root/onstart
	echo "read -p \"Press any button to start...\"" >> /root/onstart
	echo "pass_var=\$(dialog --passwordbox \"Enter password:\" 25 25  --output-fd 1)" >> /root/onstart
	echo "echo \"Opening encrypted partition\"" >> /root/onstart
	echo "echo \$pass_var | cryptsetup open $PARTITION crypt -c -" >> /root/onstart
	echo "partprobe" >> /root/onstart
	echo "zpool import -d /dev/mapper crypt -f -m" >> /root/onstart
	echo "systemctl start lxd" >> /root/onstart
	chmod +x /root/onstart
	read -p "Press any key for reboot"
	reboot
}

post_reboot_script () {
	echo "Stopping lxd and delete /var/lib/lxd/*"
	systemctl stop lxd
	rm /var/lib/lxd/* -r

	echo "Executing /root/onstart"
	bash /root/onstart

	echo "Configuring LXD"
lxd waitready
cat <<EOF | lxd init
no
yes
storage
zfs
no
crypt/lxd/storage
no
yes
lxdbr0
10.10.10.1/24
yes
none
no
no
no
EOF

	echo "Set screen settings"
	echo "startup_message off" >> /root/.screenrc
	echo "screen -t htop htop" >> /root/.screenrc
	echo "screen -t mc mc" >> /root/.screenrc
	echo "screen -t bash bash" >> /root/.screenrc
	echo "altscreen on" >> /root/.screenrc
	echo "term screen-256color" >> /root/.screenrc
	echo "bind 'b' prev" >> /root/.screenrc
	echo "bind 'n' next" >> /root/.screenrc
	echo "hardstatus alwayslastline" >> /root/.screenrc
	echo "autodetach on" >> /root/.screenrc
	echo "mousetrack on" >> /root/.screenrc
	echo "vbell off" >> /root/.screenrc
	echo "termcapinfo xterm* ti@:te@" >> /root/.screenrc
	echo "defscrollback 5000" >> /root/.screenrc
	echo "scrollback 5000" >> /root/.screenrc
	echo "hardstatus string \"%{=b kw} %?%-Lw%?%{=br kw}[%n %t]%{=b kw}%?%+Lw%? %= %c\"" >> /root/.screenrc

	echo "Install utilities"
	apt install -y mc htop screen zfsnap smartmontools

	read -p "Done, press any key to return to main menu"
	main_menu
}

install_uptrack () {
	cd /tmp
	wget https://ksplice.oracle.com/uptrack/dist/bionic/ksplice-uptrack.deb
	apt install libgtk2-perl dbus-x11 libglade2-0 libpython-stdlib libpython2.7-minimal libpython2.7-stdlib python python-cairo python-dbus python-gi python-glade2 python-gobject-2 python-gtk2 python-minimal python-pycurl python-yaml python2.7 python2.7-minimal  -y
	dpkg -i ksplice-uptrack.deb
	read -p "Done, press any key to return to main menu"
	main_menu
}
main_menu () {
	cmd=(dialog --nocancel --menu "Welcome in setup-lxd-mm!" 22 76 16)
	options=(
		1 "Pre-reboot script"
		2 "Post-reboot script"
		3 "Install uptrack-upgrade"
	)

	choices=$("${cmd[@]}" "${options[@]}" 2>&1 >/dev/tty)

	for choice in $choices
	do
	case $choice in

        1)
		pre_reboot_script
	;;

        2)
		post_reboot_script
	;;

	3)
		install_uptrack
	;;

	esac
	done
	clear
}

main_menu